Institute of High Pressure Physics

We are happy to share that dr inż. Tomasz Sochacki and dr inż. Marta Sawicka are the laureates of a LIDER Program funded by National Center for Research and Development (NCBiR).

• The project "Innovative technology for fabricating semi-insulating gallium nitride (GaN) substrates - on the way to p-type substrates" leaded by Tomasz Sochacki will be carried out in the Laboratory of Crystal Growth (NL3). It was on the podium of the ranking list of 41 projects qualified for funding!
• The project "Towards yellow laser diodes with tunable InGaN pseudo-substrate relaxation enabled by nanoporous GaN” leaded by Marta Sawicka will ba carried out in the Laboratory of MBE (NL14).

Congratulations!

The final ranking list of projects qualified for funding in the 14th competition of the LIDER Program is available on the website of the National Center for Research and Development.

Gallium nitride-based light-emitting diodes are the most energy-efficient light sources. Despite their clear advantages, they require a direct current (DC) power supply to operate effectively, while the power grid is built on alternating current (AC). An interesting proposal for a new class of optoelectronic devices dedicated to direct AC operation has been proposed by Mikołaj Żak together with colleagues from the Laboratory of Molecular Beam Epitaxy (NL-14) and other researchers of the Institute of High Pressure Physics PAS (IHPP PAS).

In a paper published in Nature Communications (Impact Factor 16.6), they present a bidirectional light-emitting diode (BD LED) that emits light in both directions of current flow through the device, unlike conventional LEDs, which must be forward biased. It is possible due to the special epitaxial structure of the BD LED, in which the active region is surrounded on both sides by tunnel junctions from the p-type doped regions. This ensures that electrons and holes are effectively injected into the same quantum well above the turn-on voltages under both negative and positive bias.

The paper "Bidirectional light-emitting diode as a visible light source driven by alternating current" (M. Żak, et al. Nat Commun 14, 7562 (2023)) is an important part of the upcoming PhD thesis of M.Sc. Mikołaj Żak and is the result of many years of research on tunnel junctions in GaN undertaken by the NL-14 group of IHPP PAS.

Instytut Wysokich Ciśnień Polskiej Akademii Nauk poszukuje kandydatów na stanowisko: Asystent/-ka Dyrektora.

Szczegóły oferty

National Center for Research and Development (NCBiR), Poland and the National Science and Technology Council (NSTC), Taiwan are organizing a Taiwanese-Polish Symposium on Semiconductor Technology. The seminar will be held on November 6, 2023 at the National Applied Research Laboratories (NARLabs) in Hsinchu, Taiwan.

Prof. Izabella Grzegory has been invited to be the Polish coordinator of the 10th Polish-Taiwanese symposium. The substantive coordinators on the Taiwanese side are Dr. Mei-Yu Chang, Director of NARLabs International Affairs Office, and Dr. Chang-Hong Shen, Deputy Director of TSRI (Taiwan Semiconductor Research Institute).

Poland will be represented by six scientists from the University of Warsaw, the Warsaw University of Technology, the Wrocław University of Science and Technology, the Military University of Technology, the Institute of Microelectronics and Photonics - Łukasiewicz Network and IWC PAN. Lecture from IWC PAN entitled Physics and Engineering of GaN in UNIPRESS: crystals, quantum structures and devices will be delivered by Prof. Izabella Grzegory.

Detailed Symposium program is available here.

Laboratory NL 10, with the consent of the Director of the IWC PAN, announces a competition for the position of PostDoc as part of the NCN OPUS 45 project ref. 2022/45/B/ST5/04005 : Pressurized Glassy Materials for Innovative Energy Storage and Conversion.

The project links the physics of glasses and amorphous materials with materials engineering. It is the result of the discovery, made with the significant participation of IHPP PAS, that below the glass temperature Tg under high pressure there is a 'magic region' with a width of 50 - 100 K where compressimg can cause the appearance of even exotic physical properties, and they are retained after decompressing down to normal conditions. Obviously, this unusual property raises many 'fundamental' questions and is an opportunity for innovative applications. In this project, we focus especially on batteries for storing electric energy with glass electrodes. As we showed in our preliminary work in 2019, a properly 'designed' path of temperature and pressure changes can create nanocrystallites in the glass matrix, which are a source of high electrical conductivity, The mentioned 'annennaling' increases it further by 2 decades. It yields an excellent material for 'glass' battery electrodes, the surface of which practically does not change during the time of usage. This is a chance for 'eternal batteries', Nite that that just  relatively fast detoriation of  of storing ability during charging and discharging cycles is a great problem of existing solutions.

The candidate will work in the Innovation Park in Celestynów for a period of 12 - 24 months. The application deadline is 31.11.2023. Detailed competition conditions, including the candidate's expectations and qualifications, are provided in the attached document.

The project is implemented by the consortium of IHPP PAS (Lab NL10) and the Warsaw University of Technology, Faculty. Physics).

Prof. dr hab.. Sylwester J Rzoska,

The  head of the Project and  NL10 Laboratory