当前位置: X-MOL 学术ACS Energy Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Mesoporous Electron-Selective Contacts Enhance the Tolerance to Interfacial Ion Accumulation in Perovskite Solar Cells
ACS Energy Letters ( IF 19.3 ) Pub Date : 2017-12-15 00:00:00 , DOI: 10.1021/acsenergylett.7b01101
Alessio Gagliardi 1 , Antonio Abate 2
Affiliation  

Perovskite-based solar cells are emerging as a potential new leading photovoltaic technology. However, several fundamental aspects of the stability remain unclear. In this Letter, we combine experimental measurements and numerical simulations to show that a mesoporous interface between the perovskite and the electron collection layer mitigates the reversible performance loss associated with the ion migration. We argue that larger interfacial area dilutes the concentration of defects that accumulate as a result of the ion migration within the perovskite under working conditions. Our investigation provides a quantitative description of the mechanism, identifying a critical defect concentration that devices can tolerate without reporting reduced performance.

中文翻译:

中孔电子选择性接触增强了钙钛矿型太阳能电池中界面离子积累的耐受性。

基于钙钛矿的太阳能电池正在成为一种潜在的领先的新型光伏技术。但是,稳定性的几个基本方面仍不清楚。在这封信中,我们结合了实验测量结果和数值模拟结果表明,钙钛矿与电子收集层之间的介孔界面减轻了与离子迁移有关的可逆性能损失。我们认为,较大的界面面积会稀释在工作条件下钙钛矿中离子迁移导致的缺陷浓度。我们的研究提供了对该机制的定量描述,确定了在不报告性能降低的情况下设备可以容忍的关键缺陷浓度。
更新日期:2017-12-15
down
wechat
bug