Institute of High Pressure Physics

Understanding GaN solubility in ammonothermal method is fundamental for the growth of high structural quality and large size crystals. When NaNH₂ is used as a mineralizer, retrograde solubility mode is obtained, i.e. solubility decreases with increasing temperature. The next Unipress Thursday Seminar will be devoted to the recent studies of ammonobasic NaNH₂–GaN–NH₃ system as a function of temperature, pressure, dissolution time, mineralizer concentration, and the surface area of GaN feedstock, opening the way to the improvement of the growth conditions.

The next Unipress Thursday Seminar will be given by dr inż. Tomasz Sochacki from Crystal Growth Laboratory, Institute of High Pressure Physics in the talk „On the solubility of GaN in the ammonothermal process – results and their thermodynamic analysis”.

Join us online via Zoom platform on Thursday, Februaty 27, 2025 at 3:00 pm. To get the link to Zoom meeting, please contact us at dyrekcja@unipress.waw.pl

Abstract of the talk is here.

Dear Colleagues,

We are pleased to invite you to the IHPP PAS Seminar on Nitride Semiconductors. The presentation will be held in a hybrid mode – at the seminar room in New Technologies building, Al. Prymasa Tysiąclecia 98, and through Zoom platform (to get the link, please contact us at nitride_seminar@mail.unipress.waw.pl ).

The next seminar is unusually scheduled on Tuesday 11.02.2025 at 14:00.

Speaker: Prof. Piotr Perlin (Institute of High Pressure Physics PAS, Warsaw, Poland)

Title: Gain-Guided InGaN Laser Diode with Plasma-Induced Isolation

Abstract: Link

Sincerely,

Tadeusz Suski
Piotr Perlin
Anna Kafar

Institute of High Pressure Physics PAS invites you to a doctoral seminar „Physical properties optimization of iron-based superconductors by high-pressure growth technique” presented by Manasa MSc from Laboratory of Superconductors and Hydrogen Technologies, IHPP PAS.

The seminar will take place on 22 January 2025 (Wednesday) at 1 pm CET in IHPP PAS New Technologies Building, al. Prymasa Tysiąclecia 98, 01-424 Warszawa, seminar room 2.35, and online via Zoom – please contact dyrekcja@unipress.waw.pl to get the link.

The seminar is devoted to the presentation of scientific results obtained during the preparation of the doctoral dissertation. Supervisor: Dr hab. Shiv J. Singh, Assoc. Prof.

Abstract: EN, PL

Dear Colleagues,

We are pleased to invite you again to the IHPP PAS Seminar on Nitride Semiconductors. The next talk is scheduled on 10 December 2024 at 10:00 (Tuesday). It will be held in a fully remote mode through Zoom platform (to get the link, please contact us at nitride_seminar@mail.unipress.waw.pl ).

Speaker: Prof. Guangxu Ju (School of Physics, Peking University, China)

Title: Dynamics of Atomic-Scale Surface Step During (In)GaN Growth by MOVPE

Abstract: Link

Sincerely,

Tadeusz Suski
Piotr Perlin
Anna Kafar