Efficient HgTe colloidal quantum dot-sensitized near-infrared photovoltaic cells

被引：44
|
作者：
Im, Sang Hyuk [2 ]
Kim, Hi-jung [2 ]
Kim, Sung Woo [1 ]
Kim, Sang-Wook [1 ]
Seok, Sang Il [2 ]
机构：
[1] Ajou Univ, Dept Mol Sci & Technol, San 5, Suwon 443749, South Korea
[2] Korea Res Inst Chem Technol, KRICT EPFL Global Res Lab, Adv Mat Div, Taejon 305600, South Korea
来源：
NANOSCALE | 2012年 / 4卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
SOLAR-CELLS; CDSE;
D O I：
10.1039/c2nr11722c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We have demonstrated the successful fabrication of multiple-layer colloidal quantum dot (CQD)-sensitized near-infrared (NIR) photovoltaic (PV) cells using the solution processable HgTe CQDs and poly-3-(hexylthiophene) (P3HT) as hole-conducting polymer. The cells showed a 3.6 fold enhancement in power conversion efficiency under NIR light illumination by the post-ethanedithiol chemical treatment. The performance enhancement was mainly ascribed to the improved interfacial contact between HgTe CQDs by elimination of oleic acid as capping ligand on the surface of HgTe CQDs. In addition, the HgTe CQD-sensitized PV cells could effectively detect weak NIR light and process over 1 kHz level signals.
引用
收藏
页码：1581 / 1584
页数：4
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