Institute of High Pressure Physics

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

Is it possible to melt GaN like other semiconductors: silicon or GaAs? What temperature and pressure is needed? Theoretical physicists from Institute of High Pressure Physics PAS made an important step towards solving this fundamental question. The results of their calculations were recently published in Chemistry of Materials (Impact factor 10.5) by J. Piechota, S. Krukowski, B. Sadovyi, P. Sadovyi, S. Porowski and I. Grzegory, in a publication entitled “Melting versus Decomposition of GaN: Ab Initio Molecular Dynamics Study and Comparison to Experimental Data” Chem. Mater. 2023, 35, 18, 7694–7707 doi: 10.1021/acs.chemmater.3c01477.

Authors determined the conditions in which the N₂ molecules are found, thus being a fingerprint of GaN decomposition, in contrast to higher pressures >15GPa at 4000K that indicate the possibility of GaN melting. Importantly the results of previous experimental work are now being confirmed by theoretical calculations which well justifies the use of the chosen method for modeling and designing difficult experiments to determine the melting curve of GaN.

Dnia 11 października 2023 r. (środa) o godz. 14:30 w sali seminaryjnej Instytutu Wysokich Ciśnień Polskiej Akademii Nauk w Warszawie, ul. Sokołowska 29/37, odbędzie się publiczna obrona rozprawy doktorskiej mgr. Ashfaqa Ahmada.

Temat rozprawy: „Phenomena related to charge distribution in nitride heterostructures and their quantitative determination using density functional theory”

Pełna treść zawiadomienia

Rozprawa doktorska i recenzje dostępne są na stronie BIP IWC PAN

Dr hab. inż. Julita Smalc-Koziorowska from the Laboratory of Semiconductor Characterization will give an invited talk on E-MRS Fall Meeting next week. The talk is entitled „The role of metal vacancies in thermal degradation of InGaN” and is a part of Symposium U "Defect-induced effects in low-dimensional and novel materials" on September 18, 2023.

The 2023 Fall Meeting of the European Materials Research Society (E-MRS) will take place from September 18 to 21, 2023 at the main campus of the University of Technology in Warsaw (Poland) and will consist of 24 parallel symposia with invited speakers, oral and poster presentations assorted by one plenary session to provide an international forum for discussing recent advances in the field of materials science.