离子液体辅助结晶策略能够同时调节高效率Sb2太阳能电池的微结构和陷状态
Donglou Ren1, Yi Wang1, Hao Huang1
1State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning, China.
Advanced materials (Deerfield Beach, Fla.)
|January 30, 2026
概括
离子液体控制了高效太阳能电池的硫化结晶. 这种方法增强了微观结构,减少了缺陷,并提高了功率转换效率.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 太阳能光伏发电是如何实现的
背景情况:
- 硫化物 (Sb2(S,Se) 3) 是高效率太阳能电池的一个有前途的材料.
- 在结晶过程中控制其微观结构和电子特性至关重要,但具有挑战性.
- 缺陷和非静态度测量通常会限制设备的性能.
研究的目的:
- 为Sb2(S,Se) 3吸收器开发一种可行的结晶方法.
- 通过使用离子液体,同时改善微观结构并减少陷状态.
- 为了提高Sb2(S,Se) 3太阳能电池的效率.
主要方法:
- 使用具有化物离子 (Cl-, Br-, I-) 和[BMIM]+的离子液体 (ILs) 来调节Sb2(S,Se) 3结晶.
- [BMIM]Br被用来创建液态微环境,加速质量转移和促进微米大小的谷物生长.
- 研究了ILs对薄膜组成,缺陷转化和晶体方向的影响.
主要成果:
- [BMIM]Br诱导了微米大小的颗粒,并促进了以[211]为导向的生长.
- 抑制的S和Se损失导致近静态度Sb2(S,Se) 3膜,孔度增加,带线对齐优化.
- 将SbS抗位缺陷转化为VSe2空位缺陷,显著抑制非辐射重组.
结论:
- [BMIM]Br调节的Sb2(S,Se) 3太阳能电池实现了创纪录的10.89%的效率和72.74%的填充系数.
- 这一战略有效地解决了Sb2(S,Se) 3太阳能电池开发的关键挑战.
- 使用ILs为推进基于Sb2(S,Se) 3的光伏提供了一个有前途的途径.
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