CdS sensitized 3D hierarchical TiO2/ZnO heterostructure for efficient solar energy conversion

Zhaoke Zheng; Wen Xie; Zhi Shiuh Lim; Lu You; Junling Wang

doi:10.1038/srep05721

CdS sensitized 3D hierarchical TiO₂/ZnO heterostructure for efficient solar energy conversion

Zhaoke Zheng, Wen Xie, Zhi Shiuh Lim, Lu You, Junling Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

73 Citations (Scopus)

11 Downloads (CityUHK Scholars)

Abstract

For conventional dye or quantum dot sensitized solar cells, which are fabricated using mesoporous films, the inefficient electron transport due to defects such as grain boundaries and surface traps is a major drawback. To simultaneously increase the carrier transport efficiency as well as the surface area, optimal-assembling of hierarchical nanostructures is an attractive approach. Here, a three dimensional (3D) hierarchical heterostructure, consisting of CdS sensitized one dimensional (1D) ZnO nanorods deposited on two dimensional (2D) TiO₂ (001) nanosheet, is prepared via a solution-process method. Such heterstructure exhibits significantly enhanced photoelectric and photocatalytic H 2 evolution performance compared with CdS sensitized 1D ZnO nanorods/1D TiO₂ nanorods photoanode, as a result of the more efficient light harvesting over the entire visible light spectrum and the effective electron transport through a highly connected 3D network.

Original language	English
Article number	5721
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep05721
Publication status	Published - 17 Jul 2014
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

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

SDG 7 Affordable and Clean Energy

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

Access Output

10.1038/srep05721

197557577.pdfFinal Published version, 1.35 MBLicence: CC BY

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{d123d523d649472888079e68cf375501,

title = "CdS sensitized 3D hierarchical TiO2/ZnO heterostructure for efficient solar energy conversion",

abstract = "For conventional dye or quantum dot sensitized solar cells, which are fabricated using mesoporous films, the inefficient electron transport due to defects such as grain boundaries and surface traps is a major drawback. To simultaneously increase the carrier transport efficiency as well as the surface area, optimal-assembling of hierarchical nanostructures is an attractive approach. Here, a three dimensional (3D) hierarchical heterostructure, consisting of CdS sensitized one dimensional (1D) ZnO nanorods deposited on two dimensional (2D) TiO2 (001) nanosheet, is prepared via a solution-process method. Such heterstructure exhibits significantly enhanced photoelectric and photocatalytic H 2 evolution performance compared with CdS sensitized 1D ZnO nanorods/1D TiO2 nanorods photoanode, as a result of the more efficient light harvesting over the entire visible light spectrum and the effective electron transport through a highly connected 3D network.",

author = "Zhaoke Zheng and Wen Xie and Lim, {Zhi Shiuh} and Lu You and Junling Wang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2014",

month = jul,

day = "17",

doi = "10.1038/srep05721",

language = "English",

volume = "4",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - CdS sensitized 3D hierarchical TiO2/ZnO heterostructure for efficient solar energy conversion

AU - Zheng, Zhaoke

AU - Xie, Wen

AU - Lim, Zhi Shiuh

AU - You, Lu

AU - Wang, Junling

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2014/7/17

Y1 - 2014/7/17

N2 - For conventional dye or quantum dot sensitized solar cells, which are fabricated using mesoporous films, the inefficient electron transport due to defects such as grain boundaries and surface traps is a major drawback. To simultaneously increase the carrier transport efficiency as well as the surface area, optimal-assembling of hierarchical nanostructures is an attractive approach. Here, a three dimensional (3D) hierarchical heterostructure, consisting of CdS sensitized one dimensional (1D) ZnO nanorods deposited on two dimensional (2D) TiO2 (001) nanosheet, is prepared via a solution-process method. Such heterstructure exhibits significantly enhanced photoelectric and photocatalytic H 2 evolution performance compared with CdS sensitized 1D ZnO nanorods/1D TiO2 nanorods photoanode, as a result of the more efficient light harvesting over the entire visible light spectrum and the effective electron transport through a highly connected 3D network.

AB - For conventional dye or quantum dot sensitized solar cells, which are fabricated using mesoporous films, the inefficient electron transport due to defects such as grain boundaries and surface traps is a major drawback. To simultaneously increase the carrier transport efficiency as well as the surface area, optimal-assembling of hierarchical nanostructures is an attractive approach. Here, a three dimensional (3D) hierarchical heterostructure, consisting of CdS sensitized one dimensional (1D) ZnO nanorods deposited on two dimensional (2D) TiO2 (001) nanosheet, is prepared via a solution-process method. Such heterstructure exhibits significantly enhanced photoelectric and photocatalytic H 2 evolution performance compared with CdS sensitized 1D ZnO nanorods/1D TiO2 nanorods photoanode, as a result of the more efficient light harvesting over the entire visible light spectrum and the effective electron transport through a highly connected 3D network.

UR - http://www.scopus.com/inward/record.url?scp=84904624286&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84904624286&origin=recordpage

U2 - 10.1038/srep05721

DO - 10.1038/srep05721

M3 - RGC 21 - Publication in refereed journal

C2 - 25030846

SN - 2045-2322

VL - 4

JO - Scientific Reports

JF - Scientific Reports

M1 - 5721

ER -