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2017-09-04

New doctor in Semiconductor Physics
Martin Eriksson successfully defended his PhD thesis “Photoluminescence Characteristics of III-Nitride Quantum Dots and Films”. Martin will remain in our labs while working for the spin-off company SweGaN. The opponent at the thesis defence was Prof. Yasuhiko Arakawa from Tokyo University, Japan.

2017-02-26

New grant in Strong research environments

Mikael Syväjärvi is partner by carbon allotropes growth process on epitaxial graphene with Uppsala University, Kiel University and the Biosensors team headed by Ashutosh Tiwari at Linköping University in combinations of hybrid nanomaterials as stimuli-enabled energy materials for smart bioelectronic devices. 18 projects were selected from 222 applications. The total budget is 24 million SEK over 6 years.

2017-02-24

New doctor in Semiconductor Physics
Pontus Stenberg successfully defended his PhD thesis “Flourinated SiC CVD”. The opponent at the thesis defence was Dr. Angel Yanguas-Gil from Argonne National Laboratories, USA.

2017-02-16

New doctor in Semiconductor Physics
Pitsiri Sukkaew successfully defended her PhD thesis “A Quantum Chemical Exploration of SiC Chemical Vapor Deposition”. The opponent at the thesis defence was Prof. Raymond Adomaitis from University of Maryland, USA.

2017-01-23

New EU project in 3C-SiC

Rositsa Yakimova, Mikael Syväjärvi and Valdas Jokubavicius in power device project.

The project CHALLENGE is a research and innovation action with focus on 3C-SiC growth, processing and power device market for which LiU will do bulk 3C-SiC.

2016-11-28

New doctor in Semiconductor Physics
Chamseddine Bouhafs successfully defended his PhD thesis Structural and electronic properties of graphene on 3C- and 4H-SiC. The opponent at the thesis defence was Prof. Jacek Baranowski, Warsaw University.

2016-11-24

Formas Grant to Jianwu Sun

Jianwu Sun has received the grant of the research and development of future research leaders from the Council of FORMAS (forsknings- och utvecklingsprojekt till framtidens forskningsledare). This research focuses on exploring innovative photoelectrode for conversion of CO2 and water into fuels using solar energy. It will be supported by the grant of 3 million SEK for a period of 3 years.

2016-08-23

Global Graphene Forum

Mikael Syväjärvi was co-chair of Global Graphene Forum which together with 4 symposiums took place Aug 23-25, 2016 in Stockholm under the umbrella of European Advanced Materials Congress which hosted 500 participants from more than 50 countries, of these the Global Graphene Forum had 80 participants. The aim of the graphene forum is to create synergies between different materials concepts and create new avenues in materials combinations.

2016-06-09

New doctor in Semiconductor Physics
Valdas Jokubavicius successfully defended his PhD thesis Electronic properties of intrinsic defects and impurities in GaN. In the photo, Valdas is enjoying his first minutes as a doctor. Valdas will remain as a postdoc in the division.The opponent at the thesis defence was Prof. Didier Chaussende from CNRS Grenoble, France.

2016-03-14

The Swedish Terahertz Workshop
Vanya Darakchieva is organizing the Swedish Terahertz Workshop. The meeting takes place March 14, in Planck, IFM. The new Terahertz Materials Analysis Center (THeMAC) will be inaugurated in connection to this workshop. View the program.

2016-02-02

Thesis Award
Supaluck Amloy (Dao) received a prestigious award for her thesis "Polarization resloved photoluminescence spectroscopy of III-nitride quantum dots" from the National Research Council of Thailand. Dao was a PhD student in the Semiconductor Materials Division during the years 2008-2013, and she was supervised by Fredrik Karlsson and Per Olof Holtz.

2016-01-11

New associate professor in Semiconductor Materials
Jianwu Sun delivered his docent lecture about the world's energy consumption and how direct conversion of solar energy into hydrogen from water splitting provides an attractive, clean and sustainable way to harvest solar energy. Jianwu focused the lecture on why cubic silicon carbide is a promising semiconductor for this purpuse.

 

2015-10-26

New doctor in Semiconductor Physics
Thien Duc Tran successfully defended his PhD thesis Electronic properties of intrinsic defects and impurities in GaN. In the photo, Duc is enjoying his first minutes as a doctor with a present from the Semiconductor Materials Division. Duc returns to Vietnam already on Thursday, where he will continue with teaching and research at Hanoi University of Science and Technology. The opponent at the thesis defence was Prof. Walter Meyer from University of Pretoria, South Afrika.

2015-10-12

New doctor in Semiconductor Physics
Ian Booker successfully defended his PhD thesis Carrier lifetime relevant deep levels in SiC. In the photo, Ian is enjoying his first minutes as a doctor while discussing with Prof Anthony Peaker, from The University of Manchester, Great Britain, who was the opponent at the thesis defence. Ian will be here at IFM until mid-Novmeber. Thereafter, he will start his post doc at the Semiconductor Science and Engineering Laboratory of Kyoto University in the group of Prof. Kimoto. In Japan, Ian will continue his studies on deep levels and carrier lifetime in SiC.

2015-10-08

New doctor in Semiconductor Physics
Chao Xia successfully defended his PhD thesis Characterizations of as grown and functionalized epitaxial graphene grown on SiC surfaces. The opponent at the thesis defence was Prof Thomas Seyller, Technische Universität Chemnitz, Germany. In the photo, Chao is congratulated by Ted. Chao is now working at a company in Uppsala called Applied Nano Surfaces.

2015-10-01

Career Grant to Volodymyr Khranovskyy
Volodymyr Khranovskyy has received the Marie Sklodowska Curie International Career Grant 2015 from the Swedish Research Council (VR) for "Development of novel two-dimensional functional oxide materials and their integration into future 'green' electronics". Volodymyr will be supported by grants of SEK 5.5 million for a period of 3 years, and he will spend the first year in  the group of Materials for Electronics, Optoelectronics and Nanotechnologies of the Faculty of Science and Technology, New University of Lisbon. The two following years will be split between Lisbon and LiU.

2015-10-01

New PhD student at Semiconductor Materials
From September 2 we have a new PhD student in the division. His name is Yuchen Shi and he will work on the growth of cubic silicon carbide for hydrogen generation from solar driven water splitting. Yuchen will be supervised by Mikael Syväjärvi and Jianwu Sun and he is is sitting in room P321, e-mail: yuchen.shi@liu.se.

2015-09-04

Best Poster Award at ICNS 2015
We congratulate Chih-Wei Hsu and co-workers for the best poster award received at the International Conference on Nitride Semiconductors. The poster presents their recent work on polarization controlled light emission. Ten poster were selected among almost 500 posters. You have the possibility to experience this poster at IFM next to room G320 in the Physics building.

2015-06-23

Vanya Darakchieva selected for SSF's Research Infrastructure Fellows
Vanya Darakchieva has been selected as Research Infrastructure Fellow by SSF for "Center for terahertz materials analysis". In her project, Vanya will build a unique terahertz ellipsometry instrumentation, which can be used to explore the electronic, optical and transport properties of materials for security applications, semiconductors, nanomaterials, organic materials and biological objects for the needs of Swedish academia and industry. Vanya will be supported by grants of SEK 15 million for a period of 5 years.

Link to SSF

2015-06-15

The first international symposium on SiC spintronics
Erik Janzén is organizing the first international symposium on SiC spintronics together with Prof. Jörg Wrachtrup from the University of Stuttgart. The interest for using SiC defects for spintronics applications is rapidly growing whereas the SiC materials knowledge among the spintronics researchers is still limited. One important purpose of the symposium is to increase the interaction between materials and spintronics researchers. The meeting takes place at Vadstena, Sweden, June 15-17, 2015.

More information at the symposium webpage.

2015-06-11

New doctor in Semiconductor Physics
Xun Li successfully defended her PhD thesis CVD solutions for new directions in SiC and GaN epitaxy. In the photo, Xun is enjoying his first minutes as a doctor, holding a gift from the Agora Materiae Graduate School in Materials Physics. The opponent at the thesis defence was Prof Sebastian Lourdudoss from KTH, Sweden.

2015-06-11

New project in fluorescent SiC
Mikael Syväjärvi  is a partner in a Danish project funded by Innovation Fund Denmark on a new type of white LED based on fluorescent SiC. The project starts July 1 and runs for 3.5 years with industrial targets as an outcome. Valdas Jokubavicius is developing the growth process.

2015-06-09

New doctor in Semiconductor Physics
Jr-Tai Chen (Ted) successfully defended his PhD thesis MOCVD growth of GaN-based high electron mobility transistor structures. The opponent at the thesis defence was Prof James Speck, University of California Santa Barbara, USA

2015-06-09

New conference in graphene
Mikael Syväjärvi is a co-organizer of the European Graphene Forum. This conference is new and launched in 2015 by Mikael Syväjärvi and Ashutosh Tiwari, both at Linköping University. The first time it will be held in Stockholm August 23-25. Each year it will be a parallel event with conferences in materials and technologies in order to trigger new research areas by exchange between fields.

Watch the invitation on Youtube.

2015-06-03

New doctor in Semiconductor Physics
Andreas Gällström successfully defended his PhD thesis Optical Characterization of Deep Level Defects in SiC. The opponent at the thesis defence was Prof Jörg Weber from Technische Universität Dresden, Germany

2015-06-02

New doctor in Semiconductor Physics
Xuan Thang Trinh successfully defended his PhD thesis Electron Paramagnetic Resonance Studies of Point Defects in AlGaN and SiC. In the photo, Thang is enjoying his first minutes as a doctor, holding this thesis and a gift from the Agora Materiae Graduate School in Materials Physics. The opponent at the thesis defence was Prof Mary Ellen Zvanut from University of Alabama at Birmingham, USA

2015-05-11

Honorary Doctor Degree

Prof. Mathias Schubert from University of Nebraska-Lincoln (UNL), a world-leading expert in the fields of optics and materials science and a long-term collaborator with the Semiconductor Materials Division, receives the Honorary Doctor Degree from Linköping University.

Mathias Schubert has made seminal contributions to the fields of spectroscopy, condensed matter physics and materials science and technology. He has pioneered infrared, far-infrared and terahertz spectroscopic ellipsometry, and invented the optical Hall effect. These techniques helped his team and researchers world-wide to develop and implement novel materials for blue and white light emitting diodes, organic solar cells, high-speed processor technologies and bio-, and chemical sensing.  Mathias Schubert has since 2000 participated along with researchers from the Semiconductor Materials Division in several research projects and large initiatives that resulted in numerous doctoral theses, scientific papers and patents. He has played a key role in the establishment of the infrared and terahertz ellipsometry laboratories at Linköping University, and the exchange of students and senior researchers between Sweden and USA. Thanks to the fruitful collaboration with the group of Prof. Schubert, Linköping University is currently recognized as one of the leading centers on spectroscopic ellipsometry in the world.

2015-04-01

LiU’s award winner in Nebraska
Philipp Kühne, postdoctoral researcher at LiU’s Semiconductor Materials Division, has been awarded the Lowe R. & Mavis M. Folsom Distinguished Doctoral Dissertation Award for his doctoral thesis at the University of Nebraska-Lincoln. His thesis is titled The optical Hall effect in three- and two-dimensional materials. Kühne is now a researcher in Vanya Darachieva’s group, working on the development of new materials for ultra-fast electronics, including graphene.

LiU News

2015-01-08

Six new research projects
The new year starts with the launch of six new research projects on SiC, III-nitrides and graphene, four are funded by the Swedish Reserach Council (VR) and two are funded by the Swedish Energy Agency (EM).

  • Peder Bergman: "Growth and Characterisation of SiC on low off-cut angle Substrates, and Improvements of High Purity Substrates for direct use in High Voltage Power Devices" (VR)
     
  • Jianwu Sun: "Cubic Silicon Carbide as Photoelectrode for Hydrogen Generation from Solar-driven Water Splitting" (VR)
     
  • Mikael Syväjärvi: "Bulk growth of cubic silicon carbide" (VR)
     
  • Rositza Yakimova: "Engineering of graphene based materials with advanced properties" (VR)
     
  • Plamen Paskov: "Research on III-nitride based quantum structures with semipolar surfaces for advanced light emitting diodes"  (EM)
     
  • Olof Kordina: "Development of isotope pure silicon carbide and gallium nitride for energy applications" (EM)

2014-10-31

New doctor in Semiconductor Physics
Milan Yazdanfar successfully defended his PhD thesis Precursors and defect control for halogenated CVD of thick SiC expitaxial layers. In the photo, Milan is enjoying his first minutes as a doctor, holding a gift from the Agora Materiae Graduate School in Materials Physics. The opponent at the thesis defence was Prof Stephen Saddow from University of South Florida, USA.

 
Nobel Prize for semiconductor research
The Nobelprize this year is shared between three scientists of japanese descent; Prof. Isamu Akasaki, Meijo University, Nagoya, Prof. Hiroshi Amano, Nagoya University, Nagoya and Prof. Shuji Nakamura, UCSB, Santa Barbara, USA. The price is mainly justified by their early fundamental discoveries on important processes for fabrication of diode structures for blue light emission in the period around 1990. These light emitting diodes (LEDs) are based on the semiconductor gallium nitride (GaN), which was studied by most major international research laboratories during the late 1960s. These early activities failed to produce blue LEDs of appreciable efficiency, mostly because of the primitive methods to produce the material and the absence of a process for efficient p-doping in order to realize the crucial pn-junction of the diode. Because substrates of GaN were missing, the diode structures had to be grown on foreign materials, such as sapphire. One way to grow GaN (by MOCVD on sapphire) with a smooth surface and a control of the conductivity was developed by Prof Akasaki's group in Nagoya 1986. Prof Amano, who was a PhD student in this group at that time, discovered two years later a process of highly p-conductive Mg-doped GaN with electron stimulation in a scanning electron microscope. Because the n-doping already could be controlled at that time, it became obvious that prerequisites to fabricate the blue emitting diode were fulfilled, and an intensive work began around 1990 to produce such structures with an active InGaN layer sandwiched between GaN barriers. At that time, Nakamura was working at the industry (Nichia) in Japan, and managed in a short time to take the lead regarding the effectiveness of blue light emitting diodes (1994). Both groups realized InGaN diode lasers already 1996.

Our research division at IFM has collaborated with all three award-winners, resulting in joint publications. Monemar's group partnered with the Nagoya group in 1994. This collaboration has resulted in about 100 joint publications with Prof. Akasaki and Prof. Amano over the past 20 years. IFM researchers have mainly assisted with experimental work to map the properties of related materials and device structures, especially in terms of optical properties. Prof. Akasaki was awarded an honorary doctor degree from Linköping University in 2001 and Prof. Monemar received honorary doctor degrees from Nagoya University in 2003 and from Meijo University in 2013. Prof. Monemar published his first work on GaN in 1970, and he is still active in this research area. The research on nitride-based semiconductors is currently a major part of the research activities at the Semiconductor Materials division.
 
New postdoc
Ivan Shtepliuk is a new postdoc since September, with a scholarship within the Visby Programme for a period of 12 months. Ivan will work with Rositza Yakimova and Volodymyr Khranovskyy on the development of the ZnO-based LED technology for designing the new-generation light-emitting diodes.

2014-09-17

Project on two-dimensional oxides
Volodyr Khranovskyy has been granted a project from ÅForsk: "Elaboration of new two-dimensional oxides". The purpose of this project is direct growth of new one-atom-thin two-dimensional crystals of ZnO by scalable and industry compatible growth technology (MOCVD) and investigating their emerging properties, distinct from the bulk counterpart. The proposed research will enable experimental discovery and development of a new material with properties and it will expand the current library of known 2D materials.

2014-06-18

New associate professor in Semiconductor Materials
Olle Kordina delivered his docent lecture about the world's energy consumption and how enormous energy savings can be realized in almost all major energy demanding sectors with wide bandgap semiconductors such as SiC and GaN. Olle is since June 18 associate professor (docent).
Abstract and photos from the docent lecture.

2014-06-10

New doctor in Semiconductor Physics
Daniel Nilsson successfully defended his PhD thesis Doping of high-Al-content AlGaN grown by MOCVD. In the photo, a relieved Daniel is enjoying his first minutes as a doctor, holding a gift from the Agora Materiae Graduate School in Materials Physics. The opponent at the thesis defence was Dr Michelle Moram from Imperial College London (UK).

2014-05-20

Inspire youngsters for science & research

The Semiconductor Materials division arranged a study visit by about 70 junior high school students from Vadstena with help from the Biomolecular and organic electronics division. The students spent 5 hours at IFM, learning about our research and its relation to energy and sustainable development. They participated in lectures about semiconductor growth, energy saving power electronics, graphene and organic solar cells. The youth also visited our research labs with exciting hands-on experiments and demonstrations. The event involved five senior researchers and four PhD students from IFM.

2014-02-13

Swedish Energy Agency funds two projects

Two research projects have been granted to Semiconductor Materials division researchers by the Swedish Energy Agency. Mikael Syväjärvi received a three years grant on cubic silicon carbide as new solar cell and infrared light emitting material, and Carl Hemmingsson received a four years grant on development of non-polar gallium nitride substrates.

2014-01-23

Grant for collaboration with Egypt

Rositsa Yakimova as a main applicant has obtained the International Collaborative Research Grant from the Swedish Research Council (Swedish Research Link Programme) for the 2014 – 2016 period. The project “Elaboration of transparent electronic materials for renewable energy technologies” is intended on the development of wide band gap semiconductor materials for future generations renewable energy technologies and is in collaboration with Solid State Physics Department in National Research Centre in Kairo, Egypt.

2013-12-04

Bo Monemar has been awarded an honorary degree from Meijo University in Japan.

2013-11-11

Vanya Darakchieva selected for SSF's Future Research Leaders programme
Vanya Darakchieva has been selected the prestigious Future Research Leaders programme by SSF for "THz Ellipsometry of high-speed electronic materials". In addition to funding for 5 years of research, the SSF programme includes education in leadership.

2013-11-11

Per Olof Holtz receives the Junior Faculty Prize
The Junior Faculty Prize for Sustainable Research Environment was this year awarded to Per Olof Holtz and Edwin Jager. A criterion for receiving this prize is that the senior researcher should support junior researchers within her/his group, with the intention of increasing their independence for a future successful research career. 

2013-11-08

Vinnova funds solar cell material
Swedish Governmental Agency for Innovation Systems funds from November 1, 2013, a two year project on “Cubic silicon carbide as a new solar cell material” led by Mikael Syväjärvi with Margareta Linnarsson, KTH Royal Institute of Technology, as co-applicant. Haiyan Ou (Technical University of Denmark) and Peter Wellmann (Universität Erlangen-Nürnberg, Germany) are project partners. The project is described as breakthrough research with high risk but also a high potential.

2013-11-08

New PhD student at Semiconductor Materials
From November 1 we have a new PhD student in the division. His name is Robin Karhu and his supervisors are Erik and Jawad. Robin will work on SiC growth and he is is sitting in room G317 together with Tomas Jemsson, phone 2756, e-mail: robka36@ifm.liu.se.

2013-11-04

Two new projects funded by the Swedish Research Council
Decisions on the general call for applications 2013 within the natural and engineering sciences has now been taken by Swedish Research Council (VR), and two new four-year projects in the Semiconductor Materials Division will be supported. Vanya Darakchieva has secured a young researcher grant for the project “Controlled growth of graphene for ultra fast electronics by means of new ellipsometry-based methods” and Anelia Kakanakova receives a project grant for “Steering AlN as a modern-technology-relevant material”.

2013-10-07

Additional support from Wallenberg
A project aiming to produce and characterize isotope enriched SiC was launched by Erik Janzén in 2011 with initial funding of SEK 18 million from the Knut and Alice Wallenberg Foundation. Now Erik will receive an additional support of SEK 18 million for two more years of research.

Moreover, Erik is co-applicant in the project “Bridging the THz Gap” led by Prof Herbert Zirath from the Chalmers University of Technology, which also has been granted by Wallenberg

Read more at LiU News...

2013-09-21

Towards a new terahertz materials preparation and analysis center
Vanya Darachieva has been granted a 2-year project from ÅForsk: "Terahertz Ellipsometer: the core of a new Terahertz Materials Preparation and Analysis Center". In this project Vanya will build a unique terahertz  ellipsometry instrumentation, which can be used to explore the electronic, optical and transport properties of materials for security applications, semiconductors, nanomaterials, organic materials and biological objects for the needs of Swedish academia and industry. 

Figure: Vanya next to a THz ellipsometer prototype at the University of Nebraska-Lincoln.

2013-09-17

Research collaboration with Norway
The Research Council grants a four year project to the research organization SINTEF in the area of “New Energy Concepts”. It studies cubic silicon carbide for a new innovative solar cell concept, in which Mikael Syväjärvi develops a novel growth technology for the photovoltaic material.

Theory has shown that cubic silicon carbide may act as a highly efficient solar cell material if doped with boron. This has not been explored since this semiconductor material is challenging to produce. Only recently it was demonstrated that high quality may be obtained by a novel growth method. State of the art quality of the cubic silicon carbide was reported by the Semiconductor Materials Division last year.

The photovoltaic properties interests the Norwegian research organization SINTEF which has landed a 0.9 million EUR research grant in the Energy X programme that targets innovative energy concepts. The programme runs under the Norwegian Research Council that selected four projects having breakthrough character among 49 applications.
 

2013-09-12

New postdoc
Abdelmalek Ainsebaa is a new postdoc who will work 25% of his time with Per-Olof Holtz in our Semiconductor Materials Division and 75% with Nathaniel Robinson in the Surface Physics and Chemistry Division. Abdelmalek recieved his PhD in Organic Electronics on the Physics of Quantum Dots-LEDs at the Denis Diderot University in Paris. Here at IFM,  Abdelmalek will mainly work on Designed Nanoparticles by Pulsed Plasma.

2013-09-05

New doctor in Semiconductor Physics
Chih-Wei Hsu successfully defended his PhD thesis InGaN Quantum Dots Grown on GaN Pyramid Arrays. In the photo, a relieved Chih-Wei is enjoying his first minutes as a doctor, together with the opponent Prof. Robert Taylor from Oxford University (UK). Chih-Wei will continue to work as postdoc in our Semiconductor Materials Division.

2013-06-01

Vanya Darakchieva receives the 2013 Paul Drude award
Vanya Darakchieva has recieved the most prestigious prise given by the ellipsometry community to a young scientist - the 2013 Paul Drude award. Vanya has been awarded the 2013 Paul Drude award for her unique contributions to the analysis of fundamental properties of anisotropic semicon- ductors, particularly group-III nitrides, but also graphene, wide band-gap oxides, and silicon carbide, using combina- torial approaches by correlating results from advanced infrared and terahertz spectroscopic ellipsometry methods in- cluding the Optical Hall effect with those obtained from high-resolution x-ray diffraction techniques. The award was presented to Vanya Darakchieva at a ceremony at the 6th International Conference on Spectroscopic Ellipsometry in Kyoto, Japan. 


Responsible for this page: Fredrik Karlsson
Last updated: 09/29/17