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Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer

Liu, D; Li, S; Zhang, P; Wang, Y; Zhang, R; Sarvari, H; Wang, F; ... Chen, ZD; + view all (2017) Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer. Nano Energy , 31 pp. 462-468. 10.1016/j.nanoen.2016.11.028. Green open access

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Abstract

Perovskite solar cells (PSCs) have been developed rapidly in recent time, and efficient planar PSCs are regarded as the most promising alternative to the Si solar cells. In this study, we demonstrated that Li-doping of compact TiO2 can reduce the density of electron traps and increase the conductivity of the electron transport layer (ETL) of PSCs. Due to the improved electronic property of ETL, the Li-doped compact TiO2 based planar heterojunction PSCs exhibit negligible hysteretic J-V behavior. Comparing with the undoped compact TiO2 based PSCs, the power conversion efficiency (PCE) of the Li-doped compact TiO2 film based PSCs is improved from 14.2% to 17.1%. Fabrication of highly efficient planar PSCs provides a pathway for commercialization of PSCs.

Type: Article
Title: Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nanoen.2016.11.028
Publisher version: http://dx.doi.org/10.1016/j.nanoen.2016.11.028
Language: English
Additional information: © 2016. This manuscript version is published under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International licence (CC BY-NC-ND 4.0). This licence allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licences are available at http://creativecommons.org/licenses/by/4.0. Access may be initially restricted by the publisher.
Keywords: Li-doping TiO2; Planar heterojunction perovskite solar cells; Less- hysteresis; CH3NH3PbI3
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1539113
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