Ag2S quantum dots-sensitized TiO2 nanotube array photoelectrodes

Yi Xie; Seung Hwa Yoo; Chong Chen; Sung Oh Cho

doi:10.1016/j.mseb.2011.09.021

Ag₂S quantum dots-sensitized TiO₂ nanotube array photoelectrodes

Yi Xie
, Seung Hwa Yoo
, Chong Chen
, Sung Oh Cho^*

^*Corresponding author for this work

Department of Quantum System Engineering

Korea Advanced Institute of Science and Technology

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

62 Scopus citations

Abstract

Ag₂S quantum dots (QDs) were deposited on ordered TiO ₂ nanotube arrays (TNTAs) using a sequential chemical bath deposition (S-CBD) approach. AgNO₃ and thiourea were used as the precursor materials of Ag⁺ and S^2- ions, respectively. The decoration of Ag₂S QDs significantly shifted the absorption spectrum of the TNTAs to visible light region. As a result, Ag₂S QDs-sensitized TNTAs exhibited much higher photocurrent density than pure TNTAs under visible light irradiation.

Original language	English
Pages (from-to)	106-111
Number of pages	6
Journal	Materials Science and Engineering: B
Volume	177
Issue number	1
DOIs	https://doi.org/10.1016/j.mseb.2011.09.021
State	Published - 2012.01.25

Keywords

Photoelectrochemistry
Quantum dots
Visible light

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10.1016/j.mseb.2011.09.021

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title = "Ag2S quantum dots-sensitized TiO2 nanotube array photoelectrodes",

abstract = "Ag2S quantum dots (QDs) were deposited on ordered TiO 2 nanotube arrays (TNTAs) using a sequential chemical bath deposition (S-CBD) approach. AgNO3 and thiourea were used as the precursor materials of Ag+ and S2- ions, respectively. The decoration of Ag2S QDs significantly shifted the absorption spectrum of the TNTAs to visible light region. As a result, Ag2S QDs-sensitized TNTAs exhibited much higher photocurrent density than pure TNTAs under visible light irradiation.",

keywords = "Photoelectrochemistry, Quantum dots, Visible light",

author = "Yi Xie and Yoo, \{Seung Hwa\} and Chong Chen and Cho, \{Sung Oh\}",

year = "2012",

month = jan,

day = "25",

doi = "10.1016/j.mseb.2011.09.021",

language = "English",

volume = "177",

pages = "106--111",

journal = "Materials Science and Engineering: B",

issn = "0921-5107",

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TY - JOUR

T1 - Ag2S quantum dots-sensitized TiO2 nanotube array photoelectrodes

AU - Xie, Yi

AU - Yoo, Seung Hwa

AU - Chen, Chong

AU - Cho, Sung Oh

PY - 2012/1/25

Y1 - 2012/1/25

N2 - Ag2S quantum dots (QDs) were deposited on ordered TiO 2 nanotube arrays (TNTAs) using a sequential chemical bath deposition (S-CBD) approach. AgNO3 and thiourea were used as the precursor materials of Ag+ and S2- ions, respectively. The decoration of Ag2S QDs significantly shifted the absorption spectrum of the TNTAs to visible light region. As a result, Ag2S QDs-sensitized TNTAs exhibited much higher photocurrent density than pure TNTAs under visible light irradiation.

AB - Ag2S quantum dots (QDs) were deposited on ordered TiO 2 nanotube arrays (TNTAs) using a sequential chemical bath deposition (S-CBD) approach. AgNO3 and thiourea were used as the precursor materials of Ag+ and S2- ions, respectively. The decoration of Ag2S QDs significantly shifted the absorption spectrum of the TNTAs to visible light region. As a result, Ag2S QDs-sensitized TNTAs exhibited much higher photocurrent density than pure TNTAs under visible light irradiation.

KW - Photoelectrochemistry

KW - Quantum dots

KW - Visible light

UR - https://www.scopus.com/pages/publications/81055156853

U2 - 10.1016/j.mseb.2011.09.021

DO - 10.1016/j.mseb.2011.09.021

M3 - Journal article

AN - SCOPUS:81055156853

SN - 0921-5107

VL - 177

SP - 106

EP - 111

JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

IS - 1

ER -

Ag₂S quantum dots-sensitized TiO₂ nanotube array photoelectrodes

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Keywords

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