Solution-processed high-performance colloidal quantum dot tandem photodetectors on flexible substrates

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作者：
20143718145905
机构：
[1] Jiang, Zhenyu
[2] You, Guanjun
[3] Wang, Li
[4] Liu, Jie
[5] Hu, Wenjia
[6] Zhang, Yu
[7] Xu, Jian
来源：
Xu, J. (jianxu@engr.psu.edu) | 1600年 / American Institute of Physics Inc.卷 / 116期
关键词：
We report a high-performance colloidal quantum dot (CQD)-based near-infrared tandem photodetector fabricated on flexible substrates via solution-processed method. The tandem photodetector on poly(ethylene terephthalate) substrates exhibited low dark current and high detectivities over ∼8.8×1011 Jones at near infrared range at -0.5V bias and over ∼1013 Jones near 0 bias. The critical bend radii of ∼8mm and ∼3mm have been demonstrated for tensile and compressive bending; respectively. The performance of photodetectors remains stable under mechanical stress; making PbSe CQD material a promise candidate for flexible infrared sensing applications. © 2014 AIP Publishing LLC;
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