Enhancing the Stability of CuO Thin-Film Photoelectrodes by Ti Alloying

Houwen Tang; M. A. Matin; Heli Wang; Shet Sudhakar; Le Chen; Mowafak M. Al-Jassim; Yanfa Yan

doi:10.1007/s11664-012-2194-3

Enhancing the Stability of CuO Thin-Film Photoelectrodes by Ti Alloying

Houwen Tang, M. A. Matin, Heli Wang, Shet Sudhakar, Le Chen, Mowafak M. Al-Jassim, Yanfa Yan

Materials Science

Research output: Contribution to journal › Article › peer-review

32 Scopus Citations

Abstract

A major drawback for CuO as an efficient photocathode in photoelectrochemical (PEC) water splitting is its instability in aqueous solution. In this paper, we report that Ti alloying can enhance the stability of CuO in PEC water splitting but at the cost of reduced crystallinity and optical absorption, and therefore reduced photocurrent. We further report that a balance between the stability and photocurrent can be realized by a bilayer configuration-a thin Ti-alloyed CuO layer on a pure CuO thin film. Our results indicate that the thickness of the top Ti-alloyed CuO layer should be optimized to realize the best stability and photocurrent.

Original language	American English
Pages (from-to)	3062-3067
Number of pages	6
Journal	Journal of Electronic Materials
Volume	41
Issue number	11
DOIs	https://doi.org/10.1007/s11664-012-2194-3 https://doi.org/10.1007/s11664-012-2194-3
State	Published - 2012

NREL Publication Number

NREL/JA-5200-55192

Keywords

Bilayer
CuO
Sputtering
Ti alloy

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title = "Enhancing the Stability of CuO Thin-Film Photoelectrodes by Ti Alloying",

abstract = "A major drawback for CuO as an efficient photocathode in photoelectrochemical (PEC) water splitting is its instability in aqueous solution. In this paper, we report that Ti alloying can enhance the stability of CuO in PEC water splitting but at the cost of reduced crystallinity and optical absorption, and therefore reduced photocurrent. We further report that a balance between the stability and photocurrent can be realized by a bilayer configuration-a thin Ti-alloyed CuO layer on a pure CuO thin film. Our results indicate that the thickness of the top Ti-alloyed CuO layer should be optimized to realize the best stability and photocurrent.",

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T1 - Enhancing the Stability of CuO Thin-Film Photoelectrodes by Ti Alloying

AU - Tang, Houwen

AU - Matin, M. A.

AU - Wang, Heli

AU - Sudhakar, Shet

AU - Chen, Le

AU - Al-Jassim, Mowafak M.

AU - Yan, Yanfa

PY - 2012

Y1 - 2012

N2 - A major drawback for CuO as an efficient photocathode in photoelectrochemical (PEC) water splitting is its instability in aqueous solution. In this paper, we report that Ti alloying can enhance the stability of CuO in PEC water splitting but at the cost of reduced crystallinity and optical absorption, and therefore reduced photocurrent. We further report that a balance between the stability and photocurrent can be realized by a bilayer configuration-a thin Ti-alloyed CuO layer on a pure CuO thin film. Our results indicate that the thickness of the top Ti-alloyed CuO layer should be optimized to realize the best stability and photocurrent.

AB - A major drawback for CuO as an efficient photocathode in photoelectrochemical (PEC) water splitting is its instability in aqueous solution. In this paper, we report that Ti alloying can enhance the stability of CuO in PEC water splitting but at the cost of reduced crystallinity and optical absorption, and therefore reduced photocurrent. We further report that a balance between the stability and photocurrent can be realized by a bilayer configuration-a thin Ti-alloyed CuO layer on a pure CuO thin film. Our results indicate that the thickness of the top Ti-alloyed CuO layer should be optimized to realize the best stability and photocurrent.

KW - Bilayer

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KW - Sputtering

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JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

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ER -

Enhancing the Stability of CuO Thin-Film Photoelectrodes by Ti Alloying

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Keywords

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