Organic and Inorganic Blocking Layers for Solution-Processed Colloidal PbSe Nanocrystal Infrared Photodetectors

被引：85
|
作者：
Sarasqueta, Galileo [1 ]
Choudhury, Kaushik Roy [1 ]
Subbiah, Jegadesan [1 ]
So, Franky [1 ]
机构：
[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
来源：
ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 01期
关键词：
LIGHT-EMITTING-DIODES; QUANTUM DOTS; EFFICIENT; POLYMER;
D O I：
10.1002/adfm.201001328
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A PbSe solution-processed nanocrystal-based infrared photodetector incorporating carrier blocking layers is demonstrated, and significant reduction of dark current is achieved. Detectivity values close to 10(12) Jones are achieved by using poly[(9,9'-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4-sec-butyl))diphenylamine)] (TFB) and ZnO nanocrystals (NC) as the electron blocker and hole blocker, respectively. An improvement in lifetime is also observed in the devices with the ZnO NCs hole blocking layer.
引用
收藏
页码：167 / 171
页数：5
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