Chemical-Bath-Deposited Indium Oxide Microcubes for Solar Water Splitting

Mukund G. Mali, Hyun Yoon, Hayong Kim, Bhavana Joshi, Salem S. Al-Deyab, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We fabricated films of cubic indium oxide (In2O3) by chemical bath deposition (CBD) for solar water splitting. The fabricated films were characterized by X-ray diffraction analysis, Raman scattering, X-ray photoelectron spectroscopy, and scanning electron microscopy, and the three-dimensional microstructure of the In2O3 cubes was elucidated. The CBD deposition time was varied, to study its effect on the growth of the In2O3 microcubes. The optimal deposition time was determined to be 24 h, and the corresponding film exhibited a photocurrent density of 0.55 mA cm-2. Finally, the film stability was tested by illuminating the films with light from an AM 1.5 filter with an intensity of 100 mW cm-2. What a performance! Films of cubic indium oxide are fabricated by chemical bath deposition for solar water splitting. The thickness of the In2O3 films can be tuned by varying the deposition time from 2 to 48 h to optimize their photoelectrochemical water-splitting performance.

Original languageEnglish
Pages (from-to)3450-3457
Number of pages8
JournalChemPhysChem
Volume16
Issue number16
DOIs
Publication statusPublished - 2015 Nov 16

Bibliographical note

Funding Information:
This research was supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the Na-tional Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2013M3A6B1078879). This work was also supported by NRF-2013R1A2A2A05005589 and by the Industrial Strategic Technology Development Program (10045221) funded by the Ministry of Knowledge Economy (MKE, Korea). The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for its funding this Prolific Research Group (PRG-1436-03). M.G.M.-is grateful for the financial support made by a Korea University Grant.

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

  • chemical bath deposition
  • electrochemistry
  • indium oxide
  • microstructure
  • water splitting

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

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