Please use this identifier to cite or link to this item:
Title: Highly efficient perovskite solar cells with Ba(OH)2 interface modification of mesoporous TiO2 electron transport layer
Authors: Thambidurai, Mariyappan
Herlina Arianita Dewi
Harikesh, Padinhare Cholakkal
Foo, Shini
K. M. Muhammed Salim
Mathews, Nripan
Dang, Cuong
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Thambidurai, M., Herlina Arianita Dewi, Harikesh, P. C., Foo, S., K. M. Muhammed Salim, Mathews, N., & Dang, C. (2018). Highly efficient perovskite solar cells with Ba(OH)2 interface modification of Mesoporous TiO2 electron transport layer. ACS Applied Energy Materials, 1(11), 5847-5852. doi:10.1021/acsaem.8b01271
Project: MOE2017-T1-002-1
Journal: ACS Applied Energy Materials
Abstract: Outstanding photovoltaic performances together with some advantageous fabrication methods are the driving forces for recent research in perovskite solar devices. Interfacial engineering greatly influences the overall performance of the organic–inorganic perovskite solar cell as it alters energy band alignment, carrier recombination, and charge extraction/transport. In this work, Ba(OH)2 was spun between the meso-TiO2 electron transport and organic–inorganic perovskite absorber layers to engineer the interface and enhance the photovoltaic performance. Ba(OH)2 modification shifted the conduction band of meso-TiO2 upward such that better alignment with perovskite energy level, reduced carrier recombination, enhanced optical absorption, and electron transportation were observed. These enhancements led to paramount power conversion efficiency (PCE) of 17.53% for optimum Ba(OH)2 concentration of 5 mg/mL spun on meso-TiO2 but poorer PCE of 16.08% for the devices without interfacial treatment. Through this study, we demonstrated the use of interface modification as a straightforward yet powerful approach to enhance performances of conventional perovskite solar cells.
ISSN: 2574-0962
DOI: 10.1021/acsaem.8b01271
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.