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Effect of under nitrogen annealing on photo-electrochemical characteristics of films deposited from authentic Cu2SnSe3 sources by thermal vacuum under argon gas condensation


Citation

Sabli, Nordin and Talib, Zainal Abidin and Hilal, Hikmat S. (2017) Effect of under nitrogen annealing on photo-electrochemical characteristics of films deposited from authentic Cu2SnSe3 sources by thermal vacuum under argon gas condensation. International Journal of Hydrogen Energy, 42 (14). 9003 - 9010. ISSN 0360-3199; ESSN:1879-3487

Abstract

This communication describes how annealing under nitrogen affects photo-electrochemical characteristics of films deposited from authentic Cu2SnSe3 sources by vacuum evaporation under argon gas (low flow rate 5 cm3/min) using substrate 300 °C. Annealing lowered the photoresponse of the deposited film, by affecting crystallite structure, morphology, composition and pores in the films. Annealing at temperatures in the range 150–350 °C improved crystallinity of the film but lead to pore formation between adjacent, which lowered photoresponse by increased resistance across the electrode/redox interface. Higher temperature (450 °C) annealing lead to SnO2 formation, as an additional phase, at the expense of Cu2SnS3 decomposition. Porosity and mixed phases with SnO2 presumably increased film internal resistance and resulted in poor charge transfer across the solid/redox couple interface. By affecting film characteristics, annealing lowered photoresponse for the deposited films.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.ijhydene.2016.04.155
Publisher: Elsevier
Keywords: Argon gas condensation; Thermal evaporation; Photoelectrochemical characteristics; Photoactivity; Copper tin selenide film
Depositing User: Ms. Ainur Aqidah Hamzah
Date Deposited: 24 May 2022 02:23
Last Modified: 24 May 2022 02:23
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.ijhydene.2016.04.155
URI: http://psasir.upm.edu.my/id/eprint/61613
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