Uncovering the origin of radiationless losses in CuLaO2 by rationalizing the action of temperature and pressure on luminescence.
Phys Chem Chem Phys
; 25(29): 19713-19718, 2023 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-37439020
CuLaO2 is a rare-earth and dopant-free inorganic compound able to emit green light upon blue excitation. Its absorption amounts to 90% but its internal quantum efficiency is poor (<17%). The origin of this deleterious radiationless behavior is addressed by investigating the spectroscopic properties of this compound under the action of temperature and hydrostatic pressure in the 15-400 K and 1 bar-40 kbar intervals, and by combining the spectroscopic data with earlier results of DFT calculations. A two-step radiationless process is demonstrated, involving radiative re-absorption and cross-over to excitonic states.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Chem Chem Phys
Assunto da revista:
BIOFISICA
/
QUIMICA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Polônia
País de publicação:
Reino Unido