Arrays of ZnO/ZnxCd1- xse nanocables: Band gap engineering and photovoltaic applications

Jun Xu; Xia Yang; Hongkang Wang; Xue Chen; Chunyan Luan; Zongxiang Xu; Zhenzhen Lu; V. A.L. Roy; Wenjun Zhang; Chun Sing Lee

doi:10.1021/nl201934k

Arrays of ZnO/Zn_xCd_{1- x}se nanocables: Band gap engineering and photovoltaic applications

Jun Xu
, Xia Yang
, Hongkang Wang
, Xue Chen
, Chunyan Luan
, Zongxiang Xu
, Zhenzhen Lu
, V. A.L. Roy
, Wenjun Zhang
, Chun Sing Lee

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

186 Citations (Scopus)

Abstract

Arrays of ZnO/Zn_xCd_1-xSe (0 ≤x ≤1) core/shell nanocables with shells of tunable compositions have been synthesized on fluorine-doped tin oxide glass substrates via a simple ion-exchange approach. Through the effects of stoichiometry and type II heterojunction, optical absorptions of the nanocable arrays can be controllably tuned to cover almost the entire visible spectrum. Lattice parameters and band gaps of the ternary Zn_xCd_1-xSe shells were found to have respectively linear and quadratic relationships with the Zn content (x). These ZnO/Zn _xCd_1-xSe nanocable arrays are further demonstrated to be promising photoelectrodes for photoelectrochemical solar cells, giving a maximum power conversion efficiency up to 4.74%.

Original language	English
Pages (from-to)	4138-4143
Number of pages	6
Journal	Nano Letters
Volume	11
Issue number	10
DOIs	https://doi.org/10.1021/nl201934k
Publication status	Published - 12 Oct 2011
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

CdSe
Vegard's law
ZnSe
band gap engineering
solar cells
type II

Access to Document

10.1021/nl201934k

Cite this

@article{b88c6bae4abc4418b3f7b2eb784ea6ad,

title = "Arrays of ZnO/ZnxCd1- xse nanocables: Band gap engineering and photovoltaic applications",

abstract = "Arrays of ZnO/ZnxCd1-xSe (0 ≤x ≤1) core/shell nanocables with shells of tunable compositions have been synthesized on fluorine-doped tin oxide glass substrates via a simple ion-exchange approach. Through the effects of stoichiometry and type II heterojunction, optical absorptions of the nanocable arrays can be controllably tuned to cover almost the entire visible spectrum. Lattice parameters and band gaps of the ternary ZnxCd1-xSe shells were found to have respectively linear and quadratic relationships with the Zn content (x). These ZnO/Zn xCd1-xSe nanocable arrays are further demonstrated to be promising photoelectrodes for photoelectrochemical solar cells, giving a maximum power conversion efficiency up to 4.74\%.",

keywords = "CdSe, Vegard's law, ZnSe, band gap engineering, solar cells, type II",

author = "Jun Xu and Xia Yang and Hongkang Wang and Xue Chen and Chunyan Luan and Zongxiang Xu and Zhenzhen Lu and Roy, \{V. A.L.\} and Wenjun Zhang and Lee, \{Chun Sing\}",

year = "2011",

month = oct,

day = "12",

doi = "10.1021/nl201934k",

language = "English",

volume = "11",

pages = "4138--4143",

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TY - JOUR

T1 - Arrays of ZnO/ZnxCd1- xse nanocables

T2 - Band gap engineering and photovoltaic applications

AU - Xu, Jun

AU - Yang, Xia

AU - Wang, Hongkang

AU - Chen, Xue

AU - Luan, Chunyan

AU - Xu, Zongxiang

AU - Lu, Zhenzhen

AU - Roy, V. A.L.

AU - Zhang, Wenjun

AU - Lee, Chun Sing

PY - 2011/10/12

Y1 - 2011/10/12

N2 - Arrays of ZnO/ZnxCd1-xSe (0 ≤x ≤1) core/shell nanocables with shells of tunable compositions have been synthesized on fluorine-doped tin oxide glass substrates via a simple ion-exchange approach. Through the effects of stoichiometry and type II heterojunction, optical absorptions of the nanocable arrays can be controllably tuned to cover almost the entire visible spectrum. Lattice parameters and band gaps of the ternary ZnxCd1-xSe shells were found to have respectively linear and quadratic relationships with the Zn content (x). These ZnO/Zn xCd1-xSe nanocable arrays are further demonstrated to be promising photoelectrodes for photoelectrochemical solar cells, giving a maximum power conversion efficiency up to 4.74%.

AB - Arrays of ZnO/ZnxCd1-xSe (0 ≤x ≤1) core/shell nanocables with shells of tunable compositions have been synthesized on fluorine-doped tin oxide glass substrates via a simple ion-exchange approach. Through the effects of stoichiometry and type II heterojunction, optical absorptions of the nanocable arrays can be controllably tuned to cover almost the entire visible spectrum. Lattice parameters and band gaps of the ternary ZnxCd1-xSe shells were found to have respectively linear and quadratic relationships with the Zn content (x). These ZnO/Zn xCd1-xSe nanocable arrays are further demonstrated to be promising photoelectrodes for photoelectrochemical solar cells, giving a maximum power conversion efficiency up to 4.74%.

KW - CdSe

KW - Vegard's law

KW - ZnSe

KW - band gap engineering

KW - solar cells

KW - type II

UR - https://www.scopus.com/pages/publications/80054046242

U2 - 10.1021/nl201934k

DO - 10.1021/nl201934k

M3 - Article

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SN - 1530-6984

VL - 11

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JO - Nano Letters

JF - Nano Letters

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