Type:
Journal
Description:
We observe radiative recombination from an electron-hole liquid (EHL) in a thin film of F A Pb Br 3, a metal halide perovskite used in transparent photovoltaics and light emitters. Photoluminescence (PL) at low excitation intensity and low temperatures only shows the free-exciton (FE) signal. As the excitation intensity increases, two additional signals in PL emerge: the electron-hole plasma (EHP) and the EHL recombination bands. For both the FE-EHP and the EHP-EHL phase transitions, a critical carrier density is established and a phase diagram is presented.
Publisher:
American Physical Society
Publication date:
6 Nov 2023
Biblio References:
Volume: 108 Issue: 19 Pages: 195201
Origin:
Physical Review B