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

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