Transiently controlled emission from ZnO surface.
Nanotechnology
; 35(43)2024 Aug 07.
Article
em En
| MEDLINE
| ID: mdl-39029472
ABSTRACT
We report on a photon (â¼3.08 eV equivalent to 402 nm) controlled optical emission from ZnO (101¯0). Under below band gap excitation (â¼2.33 eV equivalent to â¼532 nm), significant photoluminescence (PL) overlapped with Raman response is observed. The broad PL consists of three bands (629 (A), 690 (B), and 751 (C) nm) attributed to the defects arising due to excess zinc and charged oxygen vacancy. By employing asecondexcitation source at 402 nm, we demonstrate about 50% reduction in the overall PL. We utilize the doubly positive oxygen vacancy state to control the PL emission while transiently reducing its density.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Ano de publicação:
2024
Tipo de documento:
Article