Discontinuous SnO2 derived blended-interfacial-layer in mesoscopic perovskite solar cells: Minimizing electron transfer resistance and improving stability. (August 2017)

• Record Type: Journal Article
• Authors: Dong, Qingshun; Wang, Minhuan; Zhang, Qiaolan; Chen, Fan; Zhang, Sen; Bian, Jiming; Ma, Tingli; Wang, Liduo; Shi, Yantao
• Is Part Of: Nano energy. Volume 38(2017:Aug.)
• Page Start: 358
• Page End: 367
• Publication Date: 2017-08
• Subjects: Mesoscopic perovskite solar cells -- Blended-interfacial-layer -- Electron transfer -- Tin oxide -- High efficiency; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2017.05.058
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Based on a blended-interfacial-layer (BIL) with strongly coupled four components (FTO, SnO2, TiO2 and perovskite), we demonstrate in this work the design of a more advanced electron transfer layer (ETL) for mesoscopic PSCs. For the new ETL, SnO2 is a key component and is found to be essential to lower series resistance and enhance shunt resistance. Photovoltaic performance of PSCs using new ETL is much better than that of PSCs based on traditional ETL. In addition, the new ETL has been proved to be more advantageous in avoiding interfacial degradation and improving stability of the device. Graphical abstract: We put forward a new and rational ETL architecture for M-PSCs by creating a blended interface involving four components of FTO, SnO2, TiO2 and perovskite, which were strongly coupled and more advantageous for transfer of photoinduced electrons. Highlights: A blended-interfacial-layer was designed as efficiency ETL for perovskite solar cells. New ETL could lower internal series resistance and regulate energy level. New ETL has been proved to be more advantageous in avoiding interfacial degradation. Inherent charge transfer mechanism of PSCs with the four components ETL was investigated.