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

被引：28

作者：

Rusakov, KI ^{[1
]}

Gladyshchuk, AA

Rakovich, YP

Donegan, JF

Filonovich, SA

Gomes, MJM

Talapin, DV

Rogach, AL

Eychmüller, A

机构：

[1] Brest State Tech Univ, Dept Phys, Brest 224017, BELARUS

[2] Univ Dublin Trinity Coll, Dept Phys, Dublin 2, Ireland

[3] Univ Minho, Dept Fis, P-4710057 Braga, Portugal

[4] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany

来源：

OPTICS AND SPECTROSCOPY | 2003年 / 94卷 / 06期

关键词：

D O I：

10.1134/1.1586736

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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".

引用

页码：859 / 863

页数：5

共 25 条

[1] LUMINESCENCE PROPERTIES OF CDSE QUANTUM CRYSTALLITES - RESONANCE BETWEEN INTERIOR AND SURFACE LOCALIZED STATES [J].

BAWENDI, MG ;

CARROLL, PJ ;

WILSON, WL ;

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (02) :946-954

[2]

BECKMANN E, 1973, LUMINESCENCE CRYSTAL, P155

[3] (CdSe)ZnS core-shell quantum dots: Synthesis and characterization of a size series of highly luminescent nanocrystallites [J].

Dabbousi, BO ;

RodriguezViejo, J ;

Mikulec, FV ;

Heine, JR ;

Mattoussi, H ;

Ober, R ;

Jensen, KF ;

Bawendi, MG .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (46) :9463-9475

[4] Strong low-temperature anti-Stokes photoluminescence from coupled silicon nanocrystals [J].

Diener, J ;

Kovalev, D ;

Heckler, H ;

Polisski, G ;

Künzner, N ;

Koch, F ;

Efros, AL ;

Rosen, M .

OPTICAL MATERIALS, 2001, 17 (1-2) :135-139

[5] Interface-induced conversion of infrared to visible light at semiconductor interfaces [J].

Driessen, FAJM ;

Cheong, HM ;

Mascarenhas, A ;

Deb, SK ;

Hageman, PR ;

Bauhuis, GJ ;

Giling, LJ .

PHYSICAL REVIEW B, 1996, 54 (08) :R5263-R5266

[6] Band-edge exciton in quantum dots of semiconductors with a degenerate valence band: Dark and bright exciton states [J].

Efros, AL ;

Rosen, M ;

Kuno, M ;

Nirmal, M ;

Norris, DJ ;

Bawendi, M .

PHYSICAL REVIEW B, 1996, 54 (07) :4843-4856

[7] FLUORESCENCE MECHANISM OF HIGHLY MONODISPERSE Q-SIZED CDS COLLOIDS [J].

EYCHMULLER, A ;

HASSELBARTH, A ;

KATSIKAS, L ;

WELLER, H .

JOURNAL OF LUMINESCENCE, 1991, 48-9 (pt 2) :745-749

[8] Luminescence, energy transfer and anti-Stokes PL in wide band-gap semimagnetic nanostructures [J].

Heimbrodt, W ;

Falk, H ;

Klar, PJ .

JOURNAL OF LUMINESCENCE, 2000, 87-9 :344-346

[9] Giant anti-Stokes photoluminescence from semimagnetic heterostructures [J].

Heimbrodt, W ;

Happ, M ;

Henneberger, F .

PHYSICAL REVIEW B, 1999, 60 (24) :R16326-R16329

[10] THRESHOLD FOR QUASI-CONTINUUM ABSORPTION AND REDUCED LUMINESCENCE EFFICIENCY IN CDSE NANOCRYSTALS [J].

HOHEISEL, W ;

COLVIN, VL ;

JOHNSON, CS ;

ALIVISATOS, AP .

JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (10) :8455-8460

← 1 2 3 →