Up-conversion luminescence in colloidal CdTe nanocrystals

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2003

Autores

Filonovich, SA (Autor) Outra; Gomes, MJM (Autor) Outra; Rakovich, YP (Autor) Outra; Donegan, JF (Autor) Outra; Talapin, DV (Autor) Outra; Gaponik, NP (Autor) Outra; Rogach, AL (Autor) Outra; Eychmuller, A (Autor) Outra

Ata de Conferência Internacional

Título: MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS

Páginas: 157-162

Symposium on Progress in Semiconductors II - Electronic and Optoelectronic Applications

BOSTON, MA, DEC 02-05, 2002

Indexação

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-007-ASK

Abstract (EN): We report on the efficient photoluminescence up-conversion in colloidally synthesized CdTe nanocrystals. We demonstrate that the efficiency of photon energy up-conversion and magnitude of spectral shift can be controlled: (i) by the size of the nanocrystals: (ii) by the temperature dependence of the excited state absorption coefficient; (iii) by the dependence on excitation intensity. From the analysis of the experimental data we can suggest that intrinsic gap states are involved as intermediate states in the photoluminescence up-conversion rather than nonlinear two-photon absorption or Auger processes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica