期刊
ADVANCED MATERIALS INTERFACES
卷 8, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/admi.202001683
关键词
defect; high efficiency; interface passivation; perovskite solar cells; stability
资金
- Natural Science Foundation of China [51972172, 61705102, 91833304, 51802253]
- Young 1000 Talents Global Recruitment Program of China
- Jiangsu Specially Appointed Professor program
- Six talent peaks Project in Jiangsu Province, China
By utilizing interface engineering techniques and introducing butylammonium chloride and lead iodide as interface modifiers in perovskite solar cells, significant enhancements in device efficiency and stability can be achieved.
Interfacial engineering is essential for facilitating carrier separation, charge extraction, and enhancing the stability in organic-inorganic perovskite solar cells (PSCs). Herein, a facile and effective method is demonstrated not only to tune the electronic performance of electron transporting layer (ETL) but also to passivate the defects at the interface between the ETL and perovskite. On the top of the tin(IV) oxide (SnO2) ETL, butylammonium chloride (BACl) and lead(II) iodide (PbI2) are introduced as interface to modify the ETL/perovskite interface. The PSCs with interface modified exhibit a power conversion efficiency (PCE) of 21.15%, compared to 18.33% for the device without interface modified. Such enhancement in efficiency is mainly attributed to a better energy band alignment, and the quality of perovskite films is improved through the interface modification, thus enhancing photogenerated charge extraction and leading to low charge carrier recombination at the interface of ETL/perovskite. Furthermore, the device with interface modified exhibits significant stability. This work provides an alternative strategy on the ETL/perovskite interface to obtain highly stable and efficient PSCs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据