小分子化剂的分子对称性提高了矿太阳能电池的晶体质量
Jialing Liu1, Jingwen He1, Wenjun Wu1
1Key Laboratory for Advanced Materials and Institute of Fine Chemicals Shanghai Key, Laboratory of Functional Materials Chemistry School of Chemistry and Molecular Engineering East China, University of Science and Technology, Shanghai, 200237, China.
ChemSusChem
|January 17, 2024
概括
基于蒂奥芬的分子通过被动化缺陷,显著改善矿太阳能电池. 硫-2,5-二碳酸 (TPDC) 由于其分子对称性和二极矩,比TTDC更能提高效率.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 功能组是矿太阳能电池缺陷部位被动化的关键.
- 分子结构,特别是母核,影响功能组属性和被动选择性.
- 低协调的Pb2+缺陷是矿的关键性能瓶.
研究的目的:
- 为了研究基于烯的被动化剂的分子对称性和二极 Moment 如何影响矿太阳能电池的性能.
- 为了比较轴对称的 thiophen-2,5-dicarboxylic 酸 (TPDC) 与中心对称的 thieno [3,2-b] thiophene-2,5-dicarboxylic 酸 (TTDC) 的被动化效率.
- 了解小分子被动化增强矿太阳能电池的机制.
主要方法:
- 合成并利用基于烯的二碳酸 (TPDC和TTDC) 作为被动化剂.
- 制造的完全可打印的介光矿太阳能电池,包括TPDC和TTDC.
- 分析了分子对称性和二极矩对矿晶体质量,电荷重组,电荷传输和内部电场的影响.
- 测量了制造的太阳能电池的功率转换效率 (PCE).
主要成果:
- 与TTDC相比,TPDC具有轴对称性,表现出较高的二极极矩.
- TPDC在碳酸基上产生了缩的表面负潜力,导致了高级被动化.
- TPDC促进了高质量的矿晶体的形成,抑制了电荷重组,并增强了电荷传输.
- 基于TPDC的太阳能电池实现了17.15%的PCE,明显优于基于TTDC的电池 (14.79%).
结论:
- 分子对称性在确定矿太阳能电池中小分子被动化剂的有效性方面发挥着至关重要的作用.
- TPDC在抑制Pb2+缺陷方面表现出卓越的性能,从而提高了矿太阳能电池的效率.
- 这项研究强调了分子设计对于优化矿太阳能技术中被动化策略的重要性.
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