在CsPbI3太阳能电池中用于热稳定性和效率提升的氨基与氨基
Xihong Ding1, Demeng Qian1, Yu Dong2
1Jointly Constructed Key Laboratory of Power and Storage Batteries of Anhui Province, Anhui University of Science and Technology (AUST), Huainan, Anhui 232001, China.
Langmuir : the ACS journal of surfaces and colloids
|August 28, 2025
概括
像TPID·2HCl这样的联体通过加强表面相互作用和减轻降解,提高功率转换效率和设备寿命,显著提高无机CsPbI3矿太阳能电池 (PSC) 的热稳定性.
科学领域:
- 材料科学
- 可再生能源
- 太阳能发电
背景情况:
- 无机CsPbI3矿太阳能电池 (PSC) 具有高潜力,但面临不稳定性问题,特别是在环境和热应力下保持黑色阶段.
- 表面缺陷被动化对于提高PSC性能和运行稳定性至关重要.
- 基工程提出了一个有前途的策略来解决矿材料固有的不稳定性.
研究的目的:
- 系统地研究p-phenylenediamine二化物 (PPD·2HCl) 和铁胺二化物 (TPID·2HCl) 对CsPbI3 PSC性能和稳定性的影响.
- 阐明TPID·2HCl与PPD·2HCl相比增强热弹性的具体机制.
- 评估基在稳定CsPbI3矿结构中的作用.
主要方法:
- 用PPD·2HCl和TPID·2HCl处理的CsPbI3PSC的设备制造和表征
- 用热重量测量分析 (TGA) 来评估配体分解温度.
- 密度函数理论 (DFT) 计算以确定连接体与表面的结合能.
- 在热老化后分析化学稳定性的X射线光电子光谱 (XPS).
主要成果:
- PPD·2HCl和TPID·2HCl都使表面缺陷变得无源,提高了室温稳定性.
- 用TPID·2HCl处理的PSC显示出优异的热稳定性,TPID·2HCl在~350°C下分解,明显高于PPD·2HCl (~300°C).
- DFT计算显示TPID2+ (-1.51 eV) 与PPD2+ (-1.18 eV) 对CsPbI3表面的结合更强,这是XPS稳定性测试证实的.
- 经TPID·2HCl处理的装置实现了18.59%的更高功率转换效率 (PCE),并且在85°C时显示效率的延迟衰减.
结论:
- 像TPID·2HCl这样的含有的配体有效地提高了无机CsPbI3PSC的热稳定性.
- 增强的稳定性归因于更强的联体表面相互作用和更好的减轻热引起的晶格扭曲.
- TPID·2HCl为开发高稳定性和高效的CsPbI3矿太阳能电池提供了可行的策略.
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