Highly efficient and stable 3D Ni(OH)2/CdS/ZnIn2S4/TiO2 heterojunction under solar light: Effect of an improved TiO2/FTO interface and cocatalyst

Mahadeo A. Mahadik; Pravin S. Shinde; Hyun Hwi Lee; Min Cho; Jum Suk Jang

doi:10.1016/j.solmat.2016.09.038

Highly efficient and stable 3D Ni(OH)₂/CdS/ZnIn₂S₄/TiO₂ heterojunction under solar light: Effect of an improved TiO₂/FTO interface and cocatalyst

Mahadeo A. Mahadik
, Pravin S. Shinde
, Hyun Hwi Lee
, Min Cho^*
, Jum Suk Jang

^*Corresponding author for this work

Environmental Biotechnology

Jeonbuk National University
Pohang University of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

43 Scopus citations

Abstract

A simple and effective strategy was used to fundamentally improve the performance of a heterostructured Ni(OH)₂/CdS/ZnIn₂S₄/TiO₂ photoanode. TiO₂ nanorods grown hydrothermally on fluorine-doped tin oxide (FTO) and annealed at 500 °C yielded an optimal photocurrent density of ~988 μA cm^–2 at 0.1 V vs. Ag/AgCl under simulated illumination conditions. The annealing process minimized the defects in TiO₂ and assisted in the formation of close contacts between the FTO and TiO₂ nanorods, which allowed for efficient electron transport. The stepwise introduction of ZnIn₂S₄ and CdS on annealed TiO₂ enhanced absorption in the visible range and electron/hole separation in CdS/ZnIn₂S₄/TiO₂. Additionally, the Ni(OH)₂ cocatalyst functioned in hole trapping and improved the stability of the photoelectrode through timely consumption of the photogenerated charges, particularly the holes.

Original language	English
Pages (from-to)	475-487
Number of pages	13
Journal	Solar Energy Materials and Solar Cells
Volume	159
DOIs	https://doi.org/10.1016/j.solmat.2016.09.038
State	Published - 2017.01.1

Keywords

Annealed TiO nanorods
CdS/ZnInS/TiO heterostructure
Ni(OH) cocatalyst

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Electrical & Electronic

Access to Document

10.1016/j.solmat.2016.09.038

Cite this

@article{08d3669e643e46fca429c893b109e2ff,

title = "Highly efficient and stable 3D Ni(OH)2/CdS/ZnIn2S4/TiO2 heterojunction under solar light: Effect of an improved TiO2/FTO interface and cocatalyst",

abstract = "A simple and effective strategy was used to fundamentally improve the performance of a heterostructured Ni(OH)2/CdS/ZnIn2S4/TiO2 photoanode. TiO2 nanorods grown hydrothermally on fluorine-doped tin oxide (FTO) and annealed at 500 °C yielded an optimal photocurrent density of \textasciitilde{}988 μA cm–2 at 0.1 V vs. Ag/AgCl under simulated illumination conditions. The annealing process minimized the defects in TiO2 and assisted in the formation of close contacts between the FTO and TiO2 nanorods, which allowed for efficient electron transport. The stepwise introduction of ZnIn2S4 and CdS on annealed TiO2 enhanced absorption in the visible range and electron/hole separation in CdS/ZnIn2S4/TiO2. Additionally, the Ni(OH)2 cocatalyst functioned in hole trapping and improved the stability of the photoelectrode through timely consumption of the photogenerated charges, particularly the holes.",

keywords = "Annealed TiO nanorods, CdS/ZnInS/TiO heterostructure, Ni(OH) cocatalyst",

author = "Mahadik, \{Mahadeo A.\} and Shinde, \{Pravin S.\} and Lee, \{Hyun Hwi\} and Min Cho and Jang, \{Jum Suk\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = jan,

day = "1",

doi = "10.1016/j.solmat.2016.09.038",

language = "English",

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TY - JOUR

T1 - Highly efficient and stable 3D Ni(OH)2/CdS/ZnIn2S4/TiO2 heterojunction under solar light

T2 - Effect of an improved TiO2/FTO interface and cocatalyst

AU - Mahadik, Mahadeo A.

AU - Shinde, Pravin S.

AU - Lee, Hyun Hwi

AU - Cho, Min

AU - Jang, Jum Suk

PY - 2017/1/1

Y1 - 2017/1/1

N2 - A simple and effective strategy was used to fundamentally improve the performance of a heterostructured Ni(OH)2/CdS/ZnIn2S4/TiO2 photoanode. TiO2 nanorods grown hydrothermally on fluorine-doped tin oxide (FTO) and annealed at 500 °C yielded an optimal photocurrent density of ~988 μA cm–2 at 0.1 V vs. Ag/AgCl under simulated illumination conditions. The annealing process minimized the defects in TiO2 and assisted in the formation of close contacts between the FTO and TiO2 nanorods, which allowed for efficient electron transport. The stepwise introduction of ZnIn2S4 and CdS on annealed TiO2 enhanced absorption in the visible range and electron/hole separation in CdS/ZnIn2S4/TiO2. Additionally, the Ni(OH)2 cocatalyst functioned in hole trapping and improved the stability of the photoelectrode through timely consumption of the photogenerated charges, particularly the holes.

AB - A simple and effective strategy was used to fundamentally improve the performance of a heterostructured Ni(OH)2/CdS/ZnIn2S4/TiO2 photoanode. TiO2 nanorods grown hydrothermally on fluorine-doped tin oxide (FTO) and annealed at 500 °C yielded an optimal photocurrent density of ~988 μA cm–2 at 0.1 V vs. Ag/AgCl under simulated illumination conditions. The annealing process minimized the defects in TiO2 and assisted in the formation of close contacts between the FTO and TiO2 nanorods, which allowed for efficient electron transport. The stepwise introduction of ZnIn2S4 and CdS on annealed TiO2 enhanced absorption in the visible range and electron/hole separation in CdS/ZnIn2S4/TiO2. Additionally, the Ni(OH)2 cocatalyst functioned in hole trapping and improved the stability of the photoelectrode through timely consumption of the photogenerated charges, particularly the holes.

KW - Annealed TiO nanorods

KW - CdS/ZnInS/TiO heterostructure

KW - Ni(OH) cocatalyst

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U2 - 10.1016/j.solmat.2016.09.038

DO - 10.1016/j.solmat.2016.09.038

M3 - Journal article

AN - SCOPUS:84991444222

SN - 0927-0248

VL - 159

SP - 475

EP - 487

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

ER -