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无机材料学报

无机材料学报 ›› 2025, Vol. 40 ›› Issue (4): 372-378.DOI: 10.15541/jim20240319 CSTR: 32189.14.10.15541/jim20240319

• 研究论文 • 上一篇    下一篇

甲脒亚磺酸添加剂提升Sb2(S,Se)3薄膜质量及其光伏性能

倪晓萌1(), 许方贤1, 刘静静1, 张帅1,3(), 郭华飞2,3(), 袁宁一1,3   

  1. 1.常州大学 材料科学与工程学院, 常州 213164
    2.常州大学 微电子与控制工程学院, 常州 213164
    3.常州大学 江苏省光伏科学与工程协同创新中心, 常州 213164
  • 收稿日期:2024-07-05 修回日期:2024-10-23 出版日期:2024-11-15 网络出版日期:2024-11-15
  • 通讯作者: 张 帅, 副教授. E-mail: shuaizhang@cczu.edu.cn;
    郭华飞, 讲师. E-mail: guohuafei@cczu.edu.cn
  • 作者简介:倪晓萌(1999-), 女, 硕士研究生. E-mail: 1102604931@qq.com
  • 基金资助:
    江苏省自然科学基金(BK20220624)

Photovoltaic Performance of Sb2(S,Se)3 Film Enhanced by Addition of Formamidinesulfinic Acid

NI Xiaomeng1(), XU Fangxian1, LIU Jingjing1, ZHANG Shuai1,3(), GUO Huafei2,3(), YUAN Ningyi1,3   

  1. 1. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
    2. School of Microelectronics and Control Engineering, Changzhou University, Changzhou 213164, China
    3. Jiangsu Photovoltaic Science and Engineering Collaborative Innovation Center, Changzhou 213164, China
  • Received:2024-07-05 Revised:2024-10-23 Published:2024-11-15 Online:2024-11-15
  • Contact: ZHANG Shuai, associate professor. E-mail: shuaizhang@cczu.edu.cn；
    GUO Huafei, lecturer. E-mail: guohuafei@cczu.edu.cn
  • About author:NI Xiaomeng (1999-), female, Master candidate. E-mail: 1102604931@qq.com
  • Supported by:
    Natural Science Foundation of Jiangsu Province(BK20220624)

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摘要：

硒硫化锑(Sb2(S,Se)3)具有优异的光电特性, 是一种很有前景的光伏材料。然而, 目前Sb2(S,Se)3太阳能电池的最高光电转换效率(PCE)仍与理论极限有较大差距, 这部分归因于Sb2(S,Se)3薄膜中存在严重的载流子复合。本研究采用水热沉积法制备Sb2(S,Se)3薄膜, 在前驱体溶液中引入过程性添加剂甲脒亚磺酸(FSA), 不仅优化了Sb2(S,Se)3薄膜的(211)、(221)晶面取向和Se/S原子比例, 还控制了薄膜中载流子复合中心Sb2O3的含量。添加了FSA的太阳能电池的暗饱和电流密度(J0)和复合阻抗(Rrec)分别为1.10×10−5 mA·cm−2和3147 Ω·cm−2, 明显优于参照器件(J0=5.17×10−5 mA·cm−2, Rrec=974.3 Ω·cm−2), 表明FSA显著抑制了Sb2(S,Se)3太阳能电池的载流子复合。在AM 1.5G太阳光模拟器照射下, 添加了FSA的太阳能电池的开路电压(VOC)、短路电流密度(JSC)、填充因子(FF)和PCE的平均值分别为0.69 V、18.46 mA·cm−2、63.60%和8.04%, 较参照器件(0.67 V、17.82 mA·cm−2、62.27%和7.70%)均明显提升, 最优未封装器件PCE达8.21%, 在空气中老化120 d仍保持初始PCE的82.1%。

关键词: Sb2(S,Se)3, 添加剂, 甲脒亚磺酸, 载流子复合, 太阳能电池

Abstract:

In recent years, Sb2(S,Se)3 has been considered a promising photovoltaic material due to its excellent photovoltaic properties. However, the highest reported photoelectric conversion efficiency (PCE) of Sb2(S,Se)3 solar cells still lags far behind its theoretical PCE limit, partly due to severe carrier recombination in Sb2(S,Se)3 films. In this study, a process additive, formamidinesulfinic acid (FSA), was introduced into the precursor solution of Sb2(S,Se)3 by hydrothermal deposition method. The additive FSA not only optimizes (211) and (221) orientations as well as Se/S atomic ratio of Sb2(S,Se)3 films, but also reduces Sb2O3 content of carrier recombination center in the films. The dark saturation current density (J0) and recombination resistance (Rrec) values of the solar cell with FSA are 1.10×10−5 mA·cm−2 and 3147 Ω·cm−2, respectively, which are significantly better than those of reference device (5.17×10−5 mA·cm−2 and 974.3 Ω·cm−2), indicating that the carrier recombination loss of Sb2(S,Se)3 solar cell is restricted. Under AM 1.5G, the mean values of open circuit voltage (VOC), short circuit current density (JSC), fill factor (FF), and PCE for the solar cell with FSA are 0.69 V, 18.46 mA·cm−2, 63.60%, and 8.04%, respectively, showing significant improvement compared to reference device (0.67 V, 17.82 mA cm−2, 62.27%, and 7.70%). The best device contributes the highest PCE of 8.21%, and this unpackaged device maintains 82.1% of its initial efficiency after a 120 d aging test in air.

Key words: Sb2(S,Se)3, additive, formamidinesulfinic acid, carrier recombination, solar cell

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