Pulsed laser deposition of delafossite oxide thin films on YSZ (001) substrates as solar water splitting photocathodes

Chenyu Zhou; Atiya Banerjee; Esteban Luis Fornero; Zhaoyi Xi; Xiao Tong; Eli Stavitski; Xiaohui Qu; Sara E. Mason; Dario J. Stacchiola; Mingzhao Liu

doi:10.1039/D4EN00706A

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Pulsed laser deposition of delafossite oxide thin films on YSZ (001) substrates as solar water splitting photocathodes

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Peer reviewed

Pulsed laser deposition of delafossite oxide thin films on YSZ (001) substrates as solar water splitting photocathodes

Chenyu Zhou, Atiya Banerjee, Esteban Luis Fornero, Zhaoyi Xi, Xiao Tong, Eli Stavitski, Xiaohui Qu, Sara E. Mason, Dario J. Stacchiola and Mingzhao Liu

Environmental science. Nano, Vol.12(1), pp.241-247

01/2025

DOI: 10.1039/D4EN00706A

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https://www.osti.gov/biblio/2479947View

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Abstract

Development of solar energy converters with earth-abundant and environmentally friendly materials is one of the key routes explored towards a sustainable future. In this work, crystalline delafossite-phase CuAlO 2 and CuFeO 2 thin film solar water splitting photocathodes were fabricated using pulsed laser deposition. It was found that the desired delafossite phase was formed only after high temperature annealing in an oxygen-free atmosphere. The homogeneous delafossite bulk structure of the films was determined by correlating simulation results from first-principles calculations with synchrotron-based X-ray absorption near edge structure (XANES) spectroscopy. Both CuAlO 2 and CuFeO 2 photocathodes are active for solar water splitting, with the latter more efficient due to its narrower band gap and improved light absorption.

Details

Title: Subtitle: Pulsed laser deposition of delafossite oxide thin films on YSZ (001) substrates as solar water splitting photocathodes
Creators: Chenyu Zhou - Brookhaven National Laboratory
Atiya Banerjee - Brookhaven National Laboratory
Esteban Luis Fornero - Instituto de Desarrollo Tecnológico para la Industria Química
Zhaoyi Xi - Brookhaven National Laboratory
Xiao Tong - Brookhaven National Laboratory
Eli Stavitski - Brookhaven National Laboratory
Xiaohui Qu - Brookhaven National Laboratory
Sara E. Mason - Brookhaven National Laboratory
Dario J. Stacchiola - Center for Functional Nanomaterials
Mingzhao Liu - Brookhaven National Laboratory
Resource Type: Journal article
Publication Details: Environmental science. Nano, Vol.12(1), pp.241-247
DOI: 10.1039/D4EN00706A
ISSN: 2051-8153
eISSN: 2051-8161
Language: English
Electronic publication date: 11/15/2024
Date published: 01/2025
Academic Unit: Chemistry
Record Identifier: 9984749559202771

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