Optical gain and high quantum efficiency of matrix-free, closely packed CdSe quantum dots

被引：52

作者：

Gindele, F ^{[1
]}

Westphaling, R ^{[1
]}

Woggon, U ^{[1
]}

Spanhel, L ^{[1
]}

Ptatschek, V ^{[1
]}

机构：

[1] UNIV WURZBURG,INST SILICATCHEM,D-97070 WURZBURG,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 15期

关键词：

D O I：

10.1063/1.119374

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Solid films of matrix-free, closely packed CdSe nanocrystals have been prepared and surface stabilized. An efficient suppression of nonradiative recombination channels is achieved. The absolute quantum efficiency has been determined spectrally resolved using an integrating sphere, and values between 1% and 10% are obtained in dependence on temperature. Spectrally broad optical gain has been found with the maximum around 510 nm. (C) 1997 American Institute of Physics.

引用

页码：2181 / 2183

页数：3

共 16 条

[1] OPTICAL GAIN IN CDSE EPITAXIAL LAYERS ON GAAS
BOGDANOV, SV
GRUN, M
KALT, H
KLINGSHIRN, C
[J]. SOLID STATE COMMUNICATIONS, 1993, 86 (05) : 273 - 275
[2] Room temperature optical gain in sol-gel derived CdS quantum dots
Butty, J
Peyghambarian, N
Kao, YH
Mackenzie, JD
[J]. APPLIED PHYSICS LETTERS, 1996, 69 (21) : 3224 - 3226
[3] QUASI-CONTINUOUS GAIN IN SOL-GEL DERIVED CDS QUANTUM DOTS
BUTTY, J
HU, YZ
PEYGHAMBARIAN, N
KAO, YH
MACKENZIE, JD
[J]. APPLIED PHYSICS LETTERS, 1995, 67 (18) : 2672 - 2674
[4] STRONG OPTICAL NONLINEARITIES AND LASER-EMISSION OF SEMICONDUCTOR MICROCRYSTALS
DNEPROVSKII, VS
KLIMOV, VI
OKOROKOV, DK
VANDYSHEV, YV
[J]. SOLID STATE COMMUNICATIONS, 1992, 81 (03) : 227 - 230
[5] Femtosecond optical gain in strongly confined quantum dots
Giessen, H
Woggon, U
Fluegel, B
Mohs, G
Hu, YZ
Koch, SW
Peyghambarian, N
[J]. OPTICS LETTERS, 1996, 21 (14) : 1043 - 1045
[6] 3-DIMENSIONAL QUANTUM-SIZE EFFECT IN CHEMICALLY DEPOSITED CADMIUM SELENIDE FILMS
HODES, G
ALBUYARON, A
DECKER, F
MOTISUKE, P
[J]. PHYSICAL REVIEW B, 1987, 36 (08): : 4215 - 4221
[7] ELECTROCHROMIC AND PHOTOELECTROCHROMIC BEHAVIOR OF THIN WO3 FILMS PREPARED FROM QUANTUM-SIZE COLLOIDAL PARTICLES
HOTCHANDANI, S
BEDJA, I
FESSENDEN, RW
KAMAT, PV
[J]. LANGMUIR, 1994, 10 (01) : 17 - 22
[8] Long-range resonance transfer of electronic excitations in close-packed CdSe quantum-dot solids
Kagan, CR
Murray, CB
Bawendi, MG
[J]. PHYSICAL REVIEW B, 1996, 54 (12) : 8633 - 8643
[9] LUMINESCENCE SPECTRA AND RAMAN EXCITATION PROFILES IN SMALL CDS PARTICLES
PAPAVASSILIOU, GC
[J]. JOURNAL OF MOLECULAR STRUCTURE, 1982, 79 (1-4) : 395 - 398
[10] SEMICONDUCTOR CLUSTERS IN THE SOL-GEL PROCESS - QUANTIZED AGGREGATION, GELATION, AND CRYSTAL-GROWTH IN CONCENTRATED ZNO COLLOIDS
SPANHEL, L
ANDERSON, MA
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (08) : 2826 - 2833

← 1 2 →