Electronic transport of n-type CdSe quantum dot films:: Effect of film treatment

被引：106

作者：

Yu, Dong ^{[1
]}

Wehrenberg, Brian L. ^{[1
]}

Jha, Praket ^{[1
]}

Ma, Jiasen ^{[1
]}

Guyot-Sionnest, Philippe ^{[1
]}

机构：

[1] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2192288

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Solid films of CdSe colloidal quantum dots are conductive when reduced by electrochemistry. The dark conductivity and the photoconductivity of these n-type CdSe nanocrystalline solids have been investigated as a function of film treatment. When the films are treated with NaOH, a carrier mobility of similar to 10(-2) cm(2)/V s and a charging/discharging time of similar to 10 ms are obtained. Under an excitation intensity of similar to 0.75 mW/cm(2), a significant photoconductivity of similar to 10(-3) S cm(-1) has been observed. The high mobility allowed demonstrating the operation of a field effect transistor. (c) 2006 American Institute of Physics.

引用

页数：7

共 32 条

[1]

BAHTTACHARYA P, 2002, INT J HIGH SPEED ELE, V12, P969

[2] Electroluminescence from single monolayers of nanocrystals in molecular organic devices [J].