Efficient photosensitization and high optical gain in a novel quantum-dot-sensitized hybrid photorefractive nanocomposite at a telecommunications wavelength

被引：48

作者：

Choudhury, KR ^{[1
]}

Sahoo, Y

Jang, SJ

Prasad, PN

机构：

[1] SUNY Buffalo, Inst Lasers Photon & Biophoton, Dept Phys, Buffalo, NY 14260 USA

[2] SUNY Buffalo, Inst Lasers Photon & Biophoton, Dept Chem, Buffalo, NY 14260 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2005年 / 15卷 / 05期

关键词：

D O I：

10.1002/adfm.200400396

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A high-performance hybrid polymeric photorefractive nanocomposite operating at the telecommunications wavelength of 1.34 mu m is presented. The photorefractive nanocomposite is sensitized with PbS nanocrystals synthesized via a hot colloidal route. Photoconductivity experiments confirm and quantify the photocharge-generation quantum efficiency of the nanocrystals. A pronounced two-beam coupling effect at the operation wavelength is observed, leading to very high optical gains. Temporal evolution of the photorefractive growth process is also studied.

引用

页码：751 / 756

页数：6

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