A low-temperature processed flower-like TiO2 array as an electron transport layer for high-performance perovskite solar cells
Author(s)
Chen, Xiao
Tang, Li Juan
Yang, Shuang
Hou, Yu
Yang, Hua Gui
Griffith University Author(s)
Year published
2016
Metadata
Show full item recordAbstract
As an important portion in perovskite solar cells, an electron transport layer (ETL) is essential for high efficiency perovskite devices. In this work, a flower-like TiO2 array layer grown on an FTO substrate was prepared by a low-temperature (80 °C) chemical bath deposition (CBD) method. The flower-like TiO2 layer, which is composed of anatase TiO2 nanorods, was then utilized as an ETL for perovskite solar cells. As a result, excellent light-harvesting efficiency (LHE) and low recombination of electrons and holes lead to an enhanced power conversion efficiency (PCE, 15.71%) than that of traditional mesoporous TiO2 layer ...
View more >As an important portion in perovskite solar cells, an electron transport layer (ETL) is essential for high efficiency perovskite devices. In this work, a flower-like TiO2 array layer grown on an FTO substrate was prepared by a low-temperature (80 °C) chemical bath deposition (CBD) method. The flower-like TiO2 layer, which is composed of anatase TiO2 nanorods, was then utilized as an ETL for perovskite solar cells. As a result, excellent light-harvesting efficiency (LHE) and low recombination of electrons and holes lead to an enhanced power conversion efficiency (PCE, 15.71%) than that of traditional mesoporous TiO2 layer based perovskite devices (13.25%) with less hysteresis. To the best of our knowledge, it is the highest PCE for all low-temperature processed three-dimensional (3D) TiO2 ETL based perovskite devices. Moreover, it is proved that our perovskite devices are highly reproducible. This work offers a novel method to achieve all low-temperature processed, reproducible and high-performance perovskite solar cells.
View less >
View more >As an important portion in perovskite solar cells, an electron transport layer (ETL) is essential for high efficiency perovskite devices. In this work, a flower-like TiO2 array layer grown on an FTO substrate was prepared by a low-temperature (80 °C) chemical bath deposition (CBD) method. The flower-like TiO2 layer, which is composed of anatase TiO2 nanorods, was then utilized as an ETL for perovskite solar cells. As a result, excellent light-harvesting efficiency (LHE) and low recombination of electrons and holes lead to an enhanced power conversion efficiency (PCE, 15.71%) than that of traditional mesoporous TiO2 layer based perovskite devices (13.25%) with less hysteresis. To the best of our knowledge, it is the highest PCE for all low-temperature processed three-dimensional (3D) TiO2 ETL based perovskite devices. Moreover, it is proved that our perovskite devices are highly reproducible. This work offers a novel method to achieve all low-temperature processed, reproducible and high-performance perovskite solar cells.
View less >
Journal Title
Journal of Materials Chemistry A
Volume
4
Issue
17
Subject
Macromolecular and materials chemistry
Materials engineering
Other engineering
Science & Technology
Physical Sciences
Chemistry, Physical
Energy & Fuels