基于蒂奥芬的介层的比较分析,以提高Ruddlesden-Popper二维洛夫斯基特太阳能电池的性能
Kegui Li1, Xiaoyan Gan1, Ruojin Zheng1
1School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
ACS applied materials & interfaces
|February 2, 2024
概括
硫甲基胺 (TMA) 离子通过提高薄膜质量和电子流动性来改善二维拉德尔斯登-波珀矿太阳能电池. 基于TMA的设备达到16.56%的效率并保持稳定性,优于基于硫乙烯胺 (TEA) 的细胞.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 太阳能光伏发电是如何实现的
背景情况:
- 由于可调节性质和稳定性,二维拉德尔斯登 - 波珀 (RP) 矿对光电子具有前景.
- 层间酸对2D RP矿的性能有很大的影响.
- 了解阴子特异效应对于优化矿太阳能电池设计至关重要.
研究的目的:
- 通过使用硫甲基胺 (TMA) 和硫甲基胺 (TEA) 介层离子,研究二维RP矿之间的内在和设备性能差异.
- 阐明层间阴离子选择在矿结晶,电荷传输和设备效率中的作用.
- 为2D RP矿太阳能电池选择最佳的有机介层酸提供见解.
主要方法:
- 密度函数理论 (DFT) 计算用于分析电子结构和材料特性.
- 基于TMA和TEA的2D矿薄膜的实验合成和表征.
- 矿太阳能电池设备的制造和性能测试,包括效率和稳定性测量.
主要成果:
- DFT计算显示 (TEA) 2PbI4具有比 (TMA) 2PbI4.4更大的扭曲[PbI6]4-单位,更大的带间隙和更大的有效质量.
- 基于TEA的矿形成了更多的低n相,阻碍了电荷转移和光收获.
- 基于TMA的矿显示出出色的薄膜质量,提高了电子流动性,功率转换效率 (PCE) 为16.56%,在1080小时的环境暴露后保持了88%的效率.
结论:
- 有机介层离子的选择极大地影响了2D RP矿的性能和设备的性能.
- 与TEA电离子相比,TMA电离子促进了优越的薄膜质量,电荷传输和设备稳定性.
- 这些发现为高性能和稳定的2D RP矿太阳能电池的合理设计提供了宝贵的指导.
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