Triple layered Ga2O3/Cu2O/Au photoanodes with enhanced photoactivity and stability prepared using iron nickel oxide catalysts

Hee Jun Kim; Tae Won Lee; Hye Hyun Kim; U. Jeong Yang; Chan Ul Kim; Kyoung Jin Choi; Heon Lee; Jeong Min Baik

doi:10.1039/d0ta00179a

Triple layered Ga₂O₃/Cu₂O/Au photoanodes with enhanced photoactivity and stability prepared using iron nickel oxide catalysts

Hee Jun Kim
, Tae Won Lee
, Hye Hyun Kim
, U. Jeong Yang
, Chan Ul Kim
, Kyoung Jin Choi
, Heon Lee
, Jeong Min Baik

Department of Advanced Materials Science and Engineering

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

9 Scopus citations

Abstract

In this study, the photoelectrochemical performance of Cu₂O-based photoanodes is evaluated in terms of photoactivity and stability. The electrodes are based on the p-n junction consisting of Cu₂O/Ga₂O₃on which an Au layer is deposited, followed by the formation of Ni-based co-catalysts. The Au layer increases the light absorption in the entire wavelength range from 300 to 800 nm and leads to upward band bending at the Cu₂O/Au interface; thus, more photogenerated hole charges are transported to the electrolytes. The electrodeposited FeNiO_xthin layer significantly decreases the overpotential and increases the photoactivity; thus, the photoelectrochemical cell consisting of the Cu₂O-based photoanode and platinum yields a photocurrent density of about 5.15 mA cm⁻²at 1.23 Vvs.RHE

Original language	English
Pages (from-to)	10966-10972
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	8
Issue number	21
DOIs	https://doi.org/10.1039/d0ta00179a
State	Published - 7 Jun 2020

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title = "Triple layered Ga2O3/Cu2O/Au photoanodes with enhanced photoactivity and stability prepared using iron nickel oxide catalysts",

abstract = "In this study, the photoelectrochemical performance of Cu2O-based photoanodes is evaluated in terms of photoactivity and stability. The electrodes are based on the p-n junction consisting of Cu2O/Ga2O3on which an Au layer is deposited, followed by the formation of Ni-based co-catalysts. The Au layer increases the light absorption in the entire wavelength range from 300 to 800 nm and leads to upward band bending at the Cu2O/Au interface; thus, more photogenerated hole charges are transported to the electrolytes. The electrodeposited FeNiOxthin layer significantly decreases the overpotential and increases the photoactivity; thus, the photoelectrochemical cell consisting of the Cu2O-based photoanode and platinum yields a photocurrent density of about 5.15 mA cm−2at 1.23 Vvs.RHE",

author = "Kim, \{Hee Jun\} and Lee, \{Tae Won\} and Kim, \{Hye Hyun\} and Yang, \{U. Jeong\} and Kim, \{Chan Ul\} and Choi, \{Kyoung Jin\} and Heon Lee and Baik, \{Jeong Min\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2020.",

year = "2020",

month = jun,

day = "7",

doi = "10.1039/d0ta00179a",

language = "English",

volume = "8",

pages = "10966--10972",

journal = "Journal of Materials Chemistry A",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Triple layered Ga2O3/Cu2O/Au photoanodes with enhanced photoactivity and stability prepared using iron nickel oxide catalysts

AU - Kim, Hee Jun

AU - Lee, Tae Won

AU - Kim, Hye Hyun

AU - Yang, U. Jeong

AU - Kim, Chan Ul

AU - Choi, Kyoung Jin

AU - Lee, Heon

AU - Baik, Jeong Min

PY - 2020/6/7

Y1 - 2020/6/7

N2 - In this study, the photoelectrochemical performance of Cu2O-based photoanodes is evaluated in terms of photoactivity and stability. The electrodes are based on the p-n junction consisting of Cu2O/Ga2O3on which an Au layer is deposited, followed by the formation of Ni-based co-catalysts. The Au layer increases the light absorption in the entire wavelength range from 300 to 800 nm and leads to upward band bending at the Cu2O/Au interface; thus, more photogenerated hole charges are transported to the electrolytes. The electrodeposited FeNiOxthin layer significantly decreases the overpotential and increases the photoactivity; thus, the photoelectrochemical cell consisting of the Cu2O-based photoanode and platinum yields a photocurrent density of about 5.15 mA cm−2at 1.23 Vvs.RHE

AB - In this study, the photoelectrochemical performance of Cu2O-based photoanodes is evaluated in terms of photoactivity and stability. The electrodes are based on the p-n junction consisting of Cu2O/Ga2O3on which an Au layer is deposited, followed by the formation of Ni-based co-catalysts. The Au layer increases the light absorption in the entire wavelength range from 300 to 800 nm and leads to upward band bending at the Cu2O/Au interface; thus, more photogenerated hole charges are transported to the electrolytes. The electrodeposited FeNiOxthin layer significantly decreases the overpotential and increases the photoactivity; thus, the photoelectrochemical cell consisting of the Cu2O-based photoanode and platinum yields a photocurrent density of about 5.15 mA cm−2at 1.23 Vvs.RHE

UR - https://www.scopus.com/pages/publications/85085945631

U2 - 10.1039/d0ta00179a

DO - 10.1039/d0ta00179a

M3 - Article

AN - SCOPUS:85085945631

SN - 2050-7488

VL - 8

SP - 10966

EP - 10972

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 21

ER -

Triple layered Ga₂O₃/Cu₂O/Au photoanodes with enhanced photoactivity and stability prepared using iron nickel oxide catalysts

Abstract

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