Low-cost and Efficient Hole-Transport-Material-free perovskite solar cells employing controllable electron-transport layer based on P25 nanoparticles. (20th September 2016)

• Record Type: Journal Article
• Authors: Liu, Pei; Yu, Zhenhua; Cheng, Nian; Wang, Changlei; Gong, Youning; Bai, Sihang; Zhao, Xing-Zhong
• Is Part Of: Electrochimica acta. Volume 213(2016)
• Page Start: 83
• Page End: 88
• Publication Date: 2016-09-20
• Subjects: hole transport material free -- perovskite solar cells -- controllable electron-transport layer -- P25 nanoparticles; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.07.095
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: A facile approach to fabricate low-cost perovskite solar cell is introduced. Controllable morphology and properties of TiO2 electron-transport layer. Commercial P25 nanoparticles and bilayer hybrid carbon electrode is applied. Enhanced performance is observed. Excellent long-term stability together with reduced hysteresis is obtained. Abstract: A facile approach to fabricate low-cost hole-transport-material (HTM)-free perovskite solar cell(PSC) based on commercial P25 nanoparticles and bilayer hybrid carbon electrode under ambient condition is reported. The performance of such HTM-free PSCs are highly dependent on the thickness and morphology of the P25 based TiO2 electron-transport layer(ETL), which can be adjusted by the amount of ethanol and ethyl cellulose in the paste. After optimization, a power conversion efficiency of 12.48% is obtained, which is enhanced by 20.46% compared with solar cells employing hydrothermal TiO2 ETL. In addition, PSCs with P25 ETL also exhibit excellent long-term stability together with reduced hysteresis. With advantages of low-cost, high efficiency and facile fabrication process, commercial P25 nanoparticles based PSC is highly potential for future commercialization.