Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode

Mukund G. Mali; Hyun Yoon; Bhavana N. Joshi; Hyunwoong Park; Salem S. Al-Deyab; Dong Chan Lim; Se Jin Ahn; Carlo Nervi; Sam S. Yoon

doi:10.1021/acsami.5b07267

Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode

Mukund G. Mali, Hyun Yoon, Bhavana N. Joshi, Hyunwoong Park, Salem S. Al-Deyab, Dong Chan Lim, Se Jin Ahn, Carlo Nervi, Sam S. Yoon

School of Energy Engineering

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

84 Scopus citations

Abstract

A Cu(InGa)Se₂ film was modified with CdS/ZnO for application to solar water splitting. Platinum was electrodeposited on the ZnO layer as a hydrogen evolution catalyst. The effects of the electroplating time and acidity level of the electrolyte on the photocurrent density were studied. The highest photocurrent density of -32.5 mA/cm² under 1.5 AM illumination was achieved with an electroplating time of 30 min at a pH of 9. This photocurrent density is higher than those reported in previous studies. The markedly high performance of the CIGS/CdS/ZnO photocathode was rationalized in terms of its type II cascade structure that facilitated efficient charge separation at the interface junction.

Original language	English
Pages (from-to)	21619-21625
Number of pages	7
Journal	ACS applied materials & interfaces
Volume	7
Issue number	38
DOIs	https://doi.org/10.1021/acsami.5b07267
State	Published - 30 Sep 2015

Keywords

CIGS/CdS
p-n junction
photocurrent
platinum
water splitting

UN SDGs

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

Access to Document

10.1021/acsami.5b07267

Cite this

@article{d99f9cf2e0ae4eda97bea905e9f716cc,

title = "Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode",

abstract = "A Cu(InGa)Se2 film was modified with CdS/ZnO for application to solar water splitting. Platinum was electrodeposited on the ZnO layer as a hydrogen evolution catalyst. The effects of the electroplating time and acidity level of the electrolyte on the photocurrent density were studied. The highest photocurrent density of -32.5 mA/cm2 under 1.5 AM illumination was achieved with an electroplating time of 30 min at a pH of 9. This photocurrent density is higher than those reported in previous studies. The markedly high performance of the CIGS/CdS/ZnO photocathode was rationalized in terms of its type II cascade structure that facilitated efficient charge separation at the interface junction.",

keywords = "CIGS/CdS, p-n junction, photocurrent, platinum, water splitting",

author = "Mali, {Mukund G.} and Hyun Yoon and Joshi, {Bhavana N.} and Hyunwoong Park and Al-Deyab, {Salem S.} and Lim, {Dong Chan} and Ahn, {Se Jin} and Carlo Nervi and Yoon, {Sam S.}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = sep,

day = "30",

doi = "10.1021/acsami.5b07267",

language = "English",

volume = "7",

pages = "21619--21625",

journal = "ACS applied materials & interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "38",

}

TY - JOUR

T1 - Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode

AU - Mali, Mukund G.

AU - Yoon, Hyun

AU - Joshi, Bhavana N.

AU - Park, Hyunwoong

AU - Al-Deyab, Salem S.

AU - Lim, Dong Chan

AU - Ahn, Se Jin

AU - Nervi, Carlo

AU - Yoon, Sam S.

PY - 2015/9/30

Y1 - 2015/9/30

N2 - A Cu(InGa)Se2 film was modified with CdS/ZnO for application to solar water splitting. Platinum was electrodeposited on the ZnO layer as a hydrogen evolution catalyst. The effects of the electroplating time and acidity level of the electrolyte on the photocurrent density were studied. The highest photocurrent density of -32.5 mA/cm2 under 1.5 AM illumination was achieved with an electroplating time of 30 min at a pH of 9. This photocurrent density is higher than those reported in previous studies. The markedly high performance of the CIGS/CdS/ZnO photocathode was rationalized in terms of its type II cascade structure that facilitated efficient charge separation at the interface junction.

AB - A Cu(InGa)Se2 film was modified with CdS/ZnO for application to solar water splitting. Platinum was electrodeposited on the ZnO layer as a hydrogen evolution catalyst. The effects of the electroplating time and acidity level of the electrolyte on the photocurrent density were studied. The highest photocurrent density of -32.5 mA/cm2 under 1.5 AM illumination was achieved with an electroplating time of 30 min at a pH of 9. This photocurrent density is higher than those reported in previous studies. The markedly high performance of the CIGS/CdS/ZnO photocathode was rationalized in terms of its type II cascade structure that facilitated efficient charge separation at the interface junction.

KW - CIGS/CdS

KW - p-n junction

KW - photocurrent

KW - platinum

KW - water splitting

UR - http://www.scopus.com/inward/record.url?scp=84942851155&partnerID=8YFLogxK

U2 - 10.1021/acsami.5b07267

DO - 10.1021/acsami.5b07267

M3 - Article

AN - SCOPUS:84942851155

SN - 1944-8244

VL - 7

SP - 21619

EP - 21625

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

IS - 38

ER -

Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this