Metal work function enabled modulation on photo-detective properties for flexible Cu2CoSnS4 films with different annealing time

被引：2
|
作者：
Krishnaiah, Mokurala [1 ]
Kumar, Ajit [1 ]
Mishra, Dhananjay [1 ]
Kumar, Niraj [1 ]
Jin, Sung Hun [1 ]
机构：
[1] Incheon Natl Univ, Dept Elect Engn, Incheon 406772, South Korea
来源：
MATERIALS LETTERS | 2022年 / 314卷
关键词：
Cu2CoSnS4; Annealing time; Work function of electrodes; Electrical properties; Photodetection properties of the flexible; photodetector; THIN-FILMS;
D O I：
10.1016/j.matlet.2022.131897
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Herein, direct solution spin coating-based earth-abundant quaternary Cu2CoSnS4 films are reported to achieve cost-effective, visible photodetectors on flexible polyimide (PI) substrates. Different annealing times and metal work functions effectively control the optoelectronic properties of flexible CCTS films. Furthermore, the photosensitivity (50 +/- 4)%, photoresponsivity ((1090 +/- 15) mA/W), and specific detectivity ((2.38 +/- 0.21) x 10(10) Jones) are exhibited for CCTS photodetectors with Au electrodes, along with composition ratio of (Cu/(Co + Sn) = 0.88) and 400 degrees C for 2 h condition. This implies that understanding process conditions and their mechanism can be beneficial for securing high-performance, flexible, visible photodetectors.
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页数：5
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