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Remarkable performance optimization of inverted p-i-n architecture perovskite solar cell with CZTS as hole transport material

Haider, SZ; Anwar, H; Wang, M; (2021) Remarkable performance optimization of inverted p-i-n architecture perovskite solar cell with CZTS as hole transport material. Physica B: Condensed Matter , 620 , Article 413270. 10.1016/j.physb.2021.413270. Green open access

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Abstract

Hole transport material (HTM) is a major component of perovskite solar cells (PSCs). PEDOT: PSS, an organic HTM, is widely used in inverted (p-i-n) PSCs. While PEDOT: PSS is unstable, expensive and it's acidic nature could deteriorate the absorber. Copper zinc tin sulphide (CZTS), an inorganic semiconductor can be used as HTM due to its properties such as low cost, ease of synthesis and high hole mobility. In this work, device simulation of inverted (p-i-n) PSC was performed with CZTS as HTM to exploit its maximum capability. Remarkable power conversion efficiency (PCE) of 25.43% was achieved after optimizing the performance. Device performance was strongly affected by thickness and electron affinity of HTM as well as diffusion length of carriers. PCE of real fabricated device was also found to be 9.72%. This work demonstrates CZTS is a promising candidate to replace PEDOT: PSS from both experimental and theoretical perspectives.

Type: Article
Title: Remarkable performance optimization of inverted p-i-n architecture perovskite solar cell with CZTS as hole transport material
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.physb.2021.413270
Publisher version: https://doi.org/10.1016/j.physb.2021.413270
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Device simulation, Power conversion efficiency, Hole transport material, Copper zinc tin sulphide, Perovskite solar cell
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery
URI: https://discovery.ucl.ac.uk/id/eprint/10131965
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