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From spin coating to roll-to-roll: Investigating the challenge of upscaling lead halide perovskite solar cells

Lookup NU author(s): Professor Mark GeogheganORCiD

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by Institution of Engineering and Technology, 2017.

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Abstract

© The Institution of Engineering and Technology 2017. Spin coating, typically used to achieve nanometre thick films, is the established method for depositing perovskite precursors at lab scale for use in solar cells. This study investigates the dynamics of spin coating perovskite. By combining experimental measurement with a semi-empirical model the evaporation rate of the dimethylformamide solvent during the spin coating of a mixed lead halide precursor is determined to be 1.2 × 10-8 m/s. When K-bar coating the same precursor the solvent does not significantly evaporate during the deposition process and when this film is crystallised on a hot plate a rough film results which gives a power conversion efficiency (PCE) of less than 2%. By increasing the airflow of the K-bar coated perovskite film during crystallisation to 2.7 × 10-4 m/s the PCE increases significantly to 8.5% through an improvement in short-circuit current and fill factor.

Publication metadata

Author(s): Baker JA, Mouhamad Y, Hooper KEA, Burkitt D, Geoghegan M, Watson TM

Publication type: Article

Publication status: Published

Journal: IET Renewable Power Generation

Year: 2017

Volume: 11

Issue: 5

Pages: 546-549

Print publication date: 29/05/2017

Online publication date: 15/12/2016

Acceptance date: 12/12/2016

Date deposited: 05/08/2021

ISSN (print): 1752-1416

ISSN (electronic): 1752-1424

Publisher: Institution of Engineering and Technology

URL: https://doi.org/10.1049/iet-rpg.2016.0683

DOI: 10.1049/iet-rpg.2016.0683

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