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The effects of Na on the growth of Cu2ZnSnSe4 thin films using low-temperature evaporation process

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Abstract

Cu2ZnSnSe4 (CZTSe) absorbers were deposited on borosilicate glass substrate using the low-temperature process, and different Na incorporation methods were applied to investigate the effects of Na on the CZTSe growth. Na was dif-fused into some of the absorbers after growth, which led to strongly improved device performance compared with Na-free cells. With the post-deposition treatment, the effect of Na on CZTSe growth was excluded, and most of Na was expected to reside at grain boundaries. The conversion efficiency of the completed device was improved due to the enhancement of open circuit voltage and fill factor. The efficiency of 2.85% was achieved at substrate temperature as low as 420 ℃.

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DOI:10.1007/s11801-019-8130-5

基金项目:supported by the National Natural Science Foundation of China (Nos.61474066 and 61705077), and the 13th Five-Year Plan in Science and Technology of the Education Department of Jilin Province (No.JJKH20180591KJ).

收稿日期:2018-07-31

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SUN Ding:School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, ChinaInstitute of Photo Electronics Thin Film Devices and Technology, Nankai University, Tianjin 300071, ChinaSchool of Physics, Nankai University, Tianjin 300071, China
LI Yu-li:School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China
ZHANG Yu-hong:School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China
GUO Xiu-juan:School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China
ZHANG Li:Institute of Photo Electronics Thin Film Devices and Technology, Nankai University, Tianjin 300071, China
ZHANG Li-xin:School of Physics, Nankai University, Tianjin 300071, China
ZHANG Xiao-dan:Institute of Photo Electronics Thin Film Devices and Technology, Nankai University, Tianjin 300071, China

联系人作者:SUN Ding(nksunding@hotmail.com)

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引用该论文

SUN Ding,LI Yu-li,ZHANG Yu-hong,GUO Xiu-juan,ZHANG Li,ZHANG Li-xin,ZHANG Xiao-dan. The effects of Na on the growth of Cu2ZnSnSe4 thin films using low-temperature evaporation process[J]. 光电子快报(英文版), 2019, 15(2): 132-134

SUN Ding,LI Yu-li,ZHANG Yu-hong,GUO Xiu-juan,ZHANG Li,ZHANG Li-xin,ZHANG Xiao-dan. The effects of Na on the growth of Cu2ZnSnSe4 thin films using low-temperature evaporation process[J]. Optoelectronics Letters, 2019, 15(2): 132-134

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