Fully printable hole-conductor-free mesoscopic perovskite solar cells based on mesoporous anatase single crystals. (24th January 2018)

• Record Type: Journal Article
• Authors: Xiong, Yuli; Liu, Yong; Lan, Kun; Mei, Anyi; Sheng, Yusong; Zhao, Dongyuan; Han, Hongwei
• Is Part Of: New journal of chemistry. Volume 42:Number 4(2018)
• Page Start: 2669
• Page End: 2674
• Publication Date: 2018-01-24
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj04448h
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Mesoporous anatase single crystal titania with a small particle size was introduced into fully printable hole-conductor-free hybrid solar cells, which shows an optimal electron transport and carrier lifetime, leading to an enhanced device performance. Abstract : Mesoporous anatase singe crystal provides a large surface area and less carrier traps as compared to polycrystals; however, it is generally prepared with a particle size in micrometers by a complex method; this hinders its application as electron transport materials (ETMs) for mesoscopic perovskite solar cells (MPSCs). Herein, we fabricated a small-sized mesoporous anatase single crystal with a large surface area (169 m 2 g −1 ) and an oliver-shape (about 120 nm in length and 60 nm in width) by a simple method and applied it as an ETM into a hole-conductor-free fully printable MPSC. As expected, a high-quality film was formed, and the device showed an obvious increase in efficiency as compared to the P25 (commercial TiO2 )-based device due to the faster electron extraction from perovskite to the ETM. This suggests that the mesoporous anatase single crystal is a promising ETM candidate for producing efficient fully-printable hole-conductor-free MPSCs.