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Thin film cuprous oxide homojunction photoelectrode for water splitting

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dc.contributor.author Kafi, F. S. B.
dc.contributor.author Thejasiri, S. A. A. B.
dc.contributor.author Wijesundera, R. P.
dc.contributor.author Siripala, W.
dc.date.accessioned 2021-12-08T23:09:10Z
dc.date.available 2021-12-08T23:09:10Z
dc.date.issued 2021
dc.identifier.citation Kafi, F. S. B,Thejasiri, S. A. A. B, Wijesundera, R. P. &Siripala, W. ( 2021) Thin film cuprous oxide homojunction photoelectrode for water splitting, Proceedings of the International Conference on Applied and Pure Sciences (ICAPS 2021-Kelaniya)Volume 1,Faculty of Science, University of Kelaniya, Sri Lanka.Pag.220 en_US
dc.identifier.issn 2815-0112
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/24077
dc.description.abstract Employing cuprous oxide (Cu2O) photoelectrodes in photoelectrochemical cells to generate hydrogen by water splitting is beneficial. Conventionally, it is limited in practice because of the well-known reasons of its inherent corrosiveness and poor conversion efficiencies. In this study, we have investigated the possibility of improving the efficiency of Cu2O photoelectrode in the form of p-n homojunction together with sulphidation. Initially, the optimum pH values for the n- and p-Cu2O thin film deposition baths are determined as 6.1 and 13 for Ti/n-Cu2O/p-Cu2O in photoelectrochemical cell configuration. Then, at these pH values the duration of n- and p-Cu2O thin film deposition is optimized by forming Ti/n-Cu2O/p-Cu2O photoelectrode. In this study, we found that at 45 minutes of n-Cu2O and 50 minutes of p-Cu2O thin film deposition together with sulphidation forms relatively high efficient Ti/n-Cu2O/p-Cu2O photoelectrode resulting Solar-To- Hydrogen (STH) conversion efficiency of 0.9%. In addition, current-voltage characteristic of the best Cu2O homojunction photoelectrode exhibits more negative shift in onset of photocurrent which indicates that photocurrent generation and transportation have improved by the formation of homojunction and further been enhanced by sulphidation. en_US
dc.publisher Faculty of Science, University of Kelaniya, Sri Lanka. en_US
dc.subject Cuprous oxide, Electrodeposition, Photoelectrode, p-n junction, Water splitting en_US
dc.title Thin film cuprous oxide homojunction photoelectrode for water splitting en_US


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