Control of Efficiency of Photon Energy Up-Conversion in CdSe/ZnS Quantum Dots

K. I. Rusakov; A. A. Gladyshchuk; Yu. P. Rakovich; J. F. Donegan; S. A. Filonovich; M. J. M. Gomes; D. V. Talapin; A. L. Rogach; A. Eychmüller

doi:10.1134/1.1586736

Control of Efficiency of Photon Energy Up-Conversion in CdSe/ZnS Quantum Dots

K. I. Rusakov
, A. A. Gladyshchuk
, Yu. P. Rakovich
, J. F. Donegan
, S. A. Filonovich
, M. J. M. Gomes
, D. V. Talapin
, A. L. Rogach
, A. Eychmüller

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

22 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	859-863
Journal	Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume	94
Issue number	6
DOIs	https://doi.org/10.1134/1.1586736
Publication status	Published - Jun 2003
Externally published	Yes

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title = "Control of Efficiency of Photon Energy Up-Conversion in CdSe/ZnS Quantum Dots",

abstract = "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.",

author = "Rusakov, \{K. I.\} and Gladyshchuk, \{A. A.\} and Rakovich, \{Yu. P.\} and Donegan, \{J. F.\} and Filonovich, \{S. A.\} and Gomes, \{M. J. M.\} and Talapin, \{D. V.\} and Rogach, \{A. L.\} and A. Eychm{\"u}ller",

year = "2003",

month = jun,

doi = "10.1134/1.1586736",

language = "English",

volume = "94",

pages = "859--863",

journal = "Optics and Spectroscopy (English translation of Optika i Spektroskopiya)",

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TY - JOUR

T1 - Control of Efficiency of Photon Energy Up-Conversion in CdSe/ZnS Quantum Dots

AU - Rusakov, K. I.

AU - Gladyshchuk, A. A.

AU - Rakovich, Yu. P.

AU - Donegan, J. F.

AU - Filonovich, S. A.

AU - Gomes, M. J. M.

AU - Talapin, D. V.

AU - Rogach, A. L.

AU - Eychmüller, A.

PY - 2003/6

Y1 - 2003/6

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0042884427

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0042884427&origin=recordpage

U2 - 10.1134/1.1586736

DO - 10.1134/1.1586736

M3 - RGC 21 - Publication in refereed journal

SN - 0030-400X

VL - 94

SP - 859

EP - 863

JO - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

JF - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

IS - 6

ER -

Control of Efficiency of Photon Energy Up-Conversion in CdSe/ZnS Quantum Dots

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