用甲基化物添加剂解密形式胺基矿的反应产物
Liang Chen1, Manman Hu1, Seonghwan Lee2
1Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea.
Journal of the American Chemical Society
|December 11, 2023
概括
甲基化物添加剂在酸太阳能电池中产生了副产品. 这些副产品,特别是甲基甲化异构体,影响晶体生长和相位稳定,影响器件的效率.
科学领域:
- 材料科学
- 太阳能发电
- 化学工程
背景情况:
- 甲基酸 (FAPbI3) 矿太阳能电池 (PSC) 使用甲基化物 (MACl) 改善低温相位形成.
- 通过MACl的脱质和挥发产生甲基胺 (MA0),该甲基胺可以与 (FA+) 反应.
- FAPbI3,MACl及其副产品之间的化学相互作用尚未完全理解.
研究的目的:
- 研究FAPbI3,MACl添加剂及其副产品之间的化学相互作用.
- 阐明甲基形式 (MFA+) 的形成途径和对矿性质的影响.
- 了解这些相互作用如何影响PSC的效率和稳定性.
主要方法:
- 研究了FA+和MA0之间的反应.
- 分析了副产品与PbI2的后续反应.
- 培养出基于甲胺的单晶矿来研究副产品的影响.
- 具有结晶生长,相稳定性和带间隙的特征.
主要成果:
- 在FA+和MA0之间的反应中,主要形成cis/trans-N-methylformamidinium iodide (MFAI) 异构体,其中cis-MFAI具有主导作用.
- MFAI与PbI2发生反应,形成cis-MFAPbI3 2H相矿.
- MFAI影响晶体生长,相位稳定性和基于形式胺的矿的带间隙.
结论:
- 该研究澄清了FAPbI3PSC中MFAI副产品的形成和影响.
- MFAI对胺基矿的性能有很大的影响.
- 了解这些副产品的相互作用对于提高PSC效率和长期稳定性至关重要.
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