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间隔组装的单层增强高效有机和矿太阳能电池的孔运输

Chieh-Ming Hung¹, Jing-Han Shi¹, Hsiao-Chun Tsai¹

¹Department of Chemistry, Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei 106319, Taiwan.

Journal of the American Chemical Society

|June 26, 2025

概括

间隔组装单层 (IAM) 通过使用分散分子来优化膜形态和电荷提取来提高有机和矿太阳能电池的效率. 这种新的方法可以提高各种太阳能电池架构的功率转换效率.

科学领域:

材料科学
太阳能发电
纳米技术

背景情况:

自组装单层 (SAM) 对于有机和矿太阳能电池至关重要.
在SAM中形成菌可能会阻碍设备的性能.
优化界面能量和膜形态是高效率的关键.

研究的目的:

引入和评估间隔组装单层 (IAM) 作为抑制菌形成的策略.
调查分散体骨干 (NNN,NSN) 和侧链长度对太阳能电池性能的影响.
阐明IAM在有机太阳能电池 (OSC) 和矿太阳能电池 (PSC) 的性能提升背后的机制.

主要方法:

设计和合成具有不同散射骨架 (NNN,NSN) 和侧链的IAM.
包含IAM的OSC (PM6:Y6,PM6:L8-BO) 和PSC的制造和表征
使用秒瞬时吸收和时间解析光发光谱来研究底层机制.

主要成果:

与传统的SAM相比,IAM战略显著提高了OSC和PSC的功率转换效率.
具有较大的二极矩的NSN骨干通常导致更高的PCE (例如,PM6:Y6OSC中的18.04%,PSC中的25.01%).
短侧链IAM的性能与长侧链IAM相美,表明其设计灵活性.

结论:

IAM有效抑制细胞的形成,导致增强的电荷提取,减少重组,改善膜形态.
IAM分子的结合骨干和侧链对于优化性能至关重要.
IAM为开发高性能有机和矿太阳能电池提供了稳定和实用的方法.

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P-N junction

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