Control of efficiency of photon energy up-conversion in CdSe/ZnS quantum dots

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Rusakov, KI (Author) Other; Gladyshchuk, AA (Author) Other; Rakovich, YP (Author) Other; Donegan, JF (Author) Other; Filonovich, SA (Author) Other; Gomes, MJM (Author) Other; Talapin, DV (Author) Other; Rogach, AL (Author) Other; Eychmuller, A (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: OPTICS AND SPECTROSCOPY

Vol. 94

Pages: 859-863

ISSN: 0030-400X

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 17 Citations

Other information

Authenticus ID: P-000-GHE

DOI: 10.1134/1.1586736

Abstract (EN): Efficient photoluminescence (PL) up-conversion in CdSe/ZnS quantum dots prepared by an organometallic approach is reported. It is demonstrated that the efficiency of photon energy up-conversion and the magnitude of the spectral shift can be controlled by (i) the thickness of the ZnS layers, (ii) the temperature dependence of the excited-state absorption coefficient, and (iii) the dependence on the excitation intensity. From the analysis of the experimental data, it is proposed that intrinsic gap states are involved as intermediate states in the PL up-conversion, rather than nonlinear two-photon absorption or Auger processes. (C) 2003 MAIK "Nauka/Interperiodica".

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5