Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting

Sang Youn Chae; Se Jin Park; Byong koun Min; Yun Jeong Hwang; Oh Shim Joo

doi:10.1016/j.electacta.2018.11.184

Charge transportation at cascade energy structure interfaces of CuIn_xGa_1-xSe_yS_2-y/CdS/ZnS for spontaneous water splitting

Sang Youn Chae, Se Jin Park, Byong koun Min, Yun Jeong Hwang, Oh Shim Joo

GREEN SCHOOL (Graduate School of Energy and Environment)

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

8 Citations (Scopus)

Abstract

A photoelectrode has to generate high enough photovoltage by efficient charge separation spontaneously to split water. In this study, cascade band structures with CdS and ZnS applied to CuIn_xGa_1-xSe_yS_2-y (CIGS) photoelectrode of water splitting. The morphology, the electronic and the chemical state of CIGS heterojunction films have been characterized by a scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The CIGS/CdS/ZnS photocathode shows ∼400 mV anodic shift of onset potential and 0.028% efficiency for solar to hydrogen conversion when it couples with a WO₃/BiVO₄/Co-P_i photoanode for water splitting without external bias potential.

Original language	English
Pages (from-to)	633-640
Number of pages	8
Journal	Electrochimica Acta
Volume	297
DOIs	https://doi.org/10.1016/j.electacta.2018.11.184
Publication status	Published - 2019 Feb 20

Keywords

CIGS
CdS
Photoelectrochemical cell
Water splitting
ZnS

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.electacta.2018.11.184

Cite this

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title = "Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting",

abstract = "A photoelectrode has to generate high enough photovoltage by efficient charge separation spontaneously to split water. In this study, cascade band structures with CdS and ZnS applied to CuInxGa1-xSeyS2-y (CIGS) photoelectrode of water splitting. The morphology, the electronic and the chemical state of CIGS heterojunction films have been characterized by a scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The CIGS/CdS/ZnS photocathode shows ∼400 mV anodic shift of onset potential and 0.028% efficiency for solar to hydrogen conversion when it couples with a WO3/BiVO4/Co-Pi photoanode for water splitting without external bias potential.",

keywords = "CIGS, CdS, Photoelectrochemical cell, Water splitting, ZnS",

author = "Chae, {Sang Youn} and Park, {Se Jin} and Min, {Byong koun} and Hwang, {Yun Jeong} and Joo, {Oh Shim}",

note = "Funding Information: This study was supported by the program of the Korea Institute of Science and Technology (KIST; No. 2017R1A2A2A05001140), and by the Korea Center for Artificial Photosynthesis (KCAP) funded by the Minister of Science, ICT and Future Planning (MSIP) through the National Research Foundation of Korea (No. 2014M1A2A2070004). Funding Information: This study was supported by the program of the Korea Institute of Science and Technology (KIST; No. 2017R1A2A2A05001140 ), and by the Korea Center for Artificial Photosynthesis (KCAP) funded by the Minister of Science, ICT and Future Planning ( MSIP ) through the National Research Foundation of Korea (No. 2014M1A2A2070004 ). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2019",

month = feb,

day = "20",

doi = "10.1016/j.electacta.2018.11.184",

language = "English",

volume = "297",

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T1 - Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting

AU - Chae, Sang Youn

AU - Park, Se Jin

AU - Min, Byong koun

AU - Hwang, Yun Jeong

AU - Joo, Oh Shim

N1 - Funding Information: This study was supported by the program of the Korea Institute of Science and Technology (KIST; No. 2017R1A2A2A05001140), and by the Korea Center for Artificial Photosynthesis (KCAP) funded by the Minister of Science, ICT and Future Planning (MSIP) through the National Research Foundation of Korea (No. 2014M1A2A2070004). Funding Information: This study was supported by the program of the Korea Institute of Science and Technology (KIST; No. 2017R1A2A2A05001140 ), and by the Korea Center for Artificial Photosynthesis (KCAP) funded by the Minister of Science, ICT and Future Planning ( MSIP ) through the National Research Foundation of Korea (No. 2014M1A2A2070004 ). Publisher Copyright: © 2018 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2019/2/20

Y1 - 2019/2/20

N2 - A photoelectrode has to generate high enough photovoltage by efficient charge separation spontaneously to split water. In this study, cascade band structures with CdS and ZnS applied to CuInxGa1-xSeyS2-y (CIGS) photoelectrode of water splitting. The morphology, the electronic and the chemical state of CIGS heterojunction films have been characterized by a scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The CIGS/CdS/ZnS photocathode shows ∼400 mV anodic shift of onset potential and 0.028% efficiency for solar to hydrogen conversion when it couples with a WO3/BiVO4/Co-Pi photoanode for water splitting without external bias potential.

AB - A photoelectrode has to generate high enough photovoltage by efficient charge separation spontaneously to split water. In this study, cascade band structures with CdS and ZnS applied to CuInxGa1-xSeyS2-y (CIGS) photoelectrode of water splitting. The morphology, the electronic and the chemical state of CIGS heterojunction films have been characterized by a scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The CIGS/CdS/ZnS photocathode shows ∼400 mV anodic shift of onset potential and 0.028% efficiency for solar to hydrogen conversion when it couples with a WO3/BiVO4/Co-Pi photoanode for water splitting without external bias potential.

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