Photoluminescence Properties Cd-doped Cu2ZnSnS4 Thin Films and Performance of The Solar Cells

FAN Yan-yan; SUO Hong-li; FENG Ye; ZHOU Kang; WU Di; CHENG Guan-ming; SUI Fan; TONG Jun; LUO Hai-lin; LI Wen-jie; ZHONG Guo-hua; YANG Chun-lei

doi:10.3788/fgxb20173810.1338

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Photoluminescence Properties Cd-doped Cu₂ZnSnS₄ Thin Films and Performance of The Solar Cells

更新时间：2020-08-12

- Photoluminescence Properties Cd-doped Cu₂ZnSnS₄ Thin Films and Performance of The Solar Cells
- Chinese Journal of Luminescence Vol. 38, Issue 10, Pages: 1338-1345(2017)
- 作者机构：
  
  1. 北京工业大学材料科学与工程学院北京,100124
  2. 中国科学院深圳先进技术研究院, 广东深圳 518055
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(61574157,51474132,61604166)
- DOI：10.3788/fgxb20173810.1338
  CLC： TB34;O482.31
- Received：14 March 2017，
  
  Revised：13 April 2017，
  
  Published Online：04 July 2017，
  
  Published：05 October 2017
- 稿件说明：
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樊彦艳, 索红莉, 冯叶等. Cd掺杂的Cu2ZnSnS4光伏材料的发光光谱及其太阳能电池器件特性[J]. 发光学报, 2017,38(10): 1338-1345

FAN Yan-yan, SUO Hong-li, FENG Ye etc. Photoluminescence Properties Cd-doped Cu2ZnSnS4 Thin Films and Performance of The Solar Cells[J]. Chinese Journal of Luminescence, 2017,38(10): 1338-1345
樊彦艳, 索红莉, 冯叶等. Cd掺杂的Cu2ZnSnS4光伏材料的发光光谱及其太阳能电池器件特性[J]. 发光学报, 2017,38(10): 1338-1345 DOI： 10.3788/fgxb20173810.1338.

FAN Yan-yan, SUO Hong-li, FENG Ye etc. Photoluminescence Properties Cd-doped Cu2ZnSnS4 Thin Films and Performance of The Solar Cells[J]. Chinese Journal of Luminescence, 2017,38(10): 1338-1345 DOI： 10.3788/fgxb20173810.1338.

摘要

利用溅射-硫化法制备了一系列不同Cd含量掺杂的铜锌锡硫薄膜材料，并获得了转换效率最高达10.65%的薄膜太阳能电池。利用扫描电子显微镜、变温光致发光谱、变激发密度发光光谱对材料进行了表征，分析了电池器件的电容-电压、电流-电压特性。材料的发光峰峰值显示出反常的温度依赖性，载流子表现出强烈的局域化特征。Cd的适当掺入可以抑制较深缺陷的形成并减小发光峰值和带隙值之间的能量差，从而减小了器件开路电压的损失，有利于器件效率的提升。

Abstract

ZnSnS

thin films with different Cd compositions were prepared using sputtering-sulfuration method. The best device with efficiency as high as 10.65% was achieved. The scanning electron microscope

temperature dependent photoluminescence

excitation power dependent photoluminescence were employed to character the materials and the capacitance-voltage and current-voltage characteristics of the solar cells were studied. It is revealed that the photoluminescence of Cd doped Cu

ZnSnS

is dominated by donor-acceptor pairs

with carriers showing strong localization. Cd incorporation is found to be beneficial in removing deep defects and reduce the energy shift between the emission peak and absorption edge

resulting in the reduction of the open circuit voltage loss of the solar cell device. These findings are helpful to make further improvement in device efficiency.

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references

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