Cascade structure of TiO2/ZnO/CdS film for quantum dot sensitized solar cells

Guang Zhu; Likun Pan; Tao Xu; Qingfei Zhao; Zhuo Sun

doi:10.1016/j.jallcom.2011.05.043

Cascade structure of TiO₂/ZnO/CdS film for quantum dot sensitized solar cells

Guang Zhu, Likun Pan, Tao Xu, Qingfei Zhao, Zhuo Sun

School of Physics and Electronic Science

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

57 Scopus citations

Abstract

Quantum dot sensitized solar cells based on cascade structure of TiO ₂/ZnO/CdS electrode and polysulfide electrolyte were fabricated. The ZnO layer was deposited on screen-printed TiO₂ layer by ultrasonic spray pyrolysis method. The structure, morphology and impedance of TiO ₂/ZnO film photoanode and the photovoltaic performance of TiO ₂/ZnO/CdS cell were investigated. It is found that the short circuit current density and conversion efficiency are significantly improved by the introduction of ZnO layer into TiO₂/CdS film. A power conversion efficiency of about 1.56% has been obtained for TiO₂/ZnO/CdS cell, which is about 57% higher than that for TiO₂/CdS cell (0.99%). The formation of an inherent energy barrier between TiO₂ and CdS films and the passivation of surface traps on the TiO₂ film caused by the introduction of ZnO layer, which reduces the charge recombination and favors the electron transport, should be mainly responsible for the performance enhancement of TiO₂/ZnO/CdS cell.

Original language	English
Pages (from-to)	7814-7818
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	29
DOIs	https://doi.org/10.1016/j.jallcom.2011.05.043
State	Published - 21 Jul 2011

Keywords

CdS
Quantum dot sensitized solar cell
Ultrasonic spray pyrolysis
ZnO film

UN SDGs

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

Access to Document

10.1016/j.jallcom.2011.05.043

Cite this

@article{299ea969df06445ab1c12a0d902c70bd,

title = "Cascade structure of TiO2/ZnO/CdS film for quantum dot sensitized solar cells",

abstract = "Quantum dot sensitized solar cells based on cascade structure of TiO 2/ZnO/CdS electrode and polysulfide electrolyte were fabricated. The ZnO layer was deposited on screen-printed TiO2 layer by ultrasonic spray pyrolysis method. The structure, morphology and impedance of TiO 2/ZnO film photoanode and the photovoltaic performance of TiO 2/ZnO/CdS cell were investigated. It is found that the short circuit current density and conversion efficiency are significantly improved by the introduction of ZnO layer into TiO2/CdS film. A power conversion efficiency of about 1.56\% has been obtained for TiO2/ZnO/CdS cell, which is about 57\% higher than that for TiO2/CdS cell (0.99\%). The formation of an inherent energy barrier between TiO2 and CdS films and the passivation of surface traps on the TiO2 film caused by the introduction of ZnO layer, which reduces the charge recombination and favors the electron transport, should be mainly responsible for the performance enhancement of TiO2/ZnO/CdS cell.",

keywords = "CdS, Quantum dot sensitized solar cell, Ultrasonic spray pyrolysis, ZnO film",

author = "Guang Zhu and Likun Pan and Tao Xu and Qingfei Zhao and Zhuo Sun",

year = "2011",

month = jul,

day = "21",

doi = "10.1016/j.jallcom.2011.05.043",

language = "英语",

volume = "509",

pages = "7814--7818",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "29",

}

TY - JOUR

T1 - Cascade structure of TiO2/ZnO/CdS film for quantum dot sensitized solar cells

AU - Zhu, Guang

AU - Pan, Likun

AU - Xu, Tao

AU - Zhao, Qingfei

AU - Sun, Zhuo

PY - 2011/7/21

Y1 - 2011/7/21

N2 - Quantum dot sensitized solar cells based on cascade structure of TiO 2/ZnO/CdS electrode and polysulfide electrolyte were fabricated. The ZnO layer was deposited on screen-printed TiO2 layer by ultrasonic spray pyrolysis method. The structure, morphology and impedance of TiO 2/ZnO film photoanode and the photovoltaic performance of TiO 2/ZnO/CdS cell were investigated. It is found that the short circuit current density and conversion efficiency are significantly improved by the introduction of ZnO layer into TiO2/CdS film. A power conversion efficiency of about 1.56% has been obtained for TiO2/ZnO/CdS cell, which is about 57% higher than that for TiO2/CdS cell (0.99%). The formation of an inherent energy barrier between TiO2 and CdS films and the passivation of surface traps on the TiO2 film caused by the introduction of ZnO layer, which reduces the charge recombination and favors the electron transport, should be mainly responsible for the performance enhancement of TiO2/ZnO/CdS cell.

AB - Quantum dot sensitized solar cells based on cascade structure of TiO 2/ZnO/CdS electrode and polysulfide electrolyte were fabricated. The ZnO layer was deposited on screen-printed TiO2 layer by ultrasonic spray pyrolysis method. The structure, morphology and impedance of TiO 2/ZnO film photoanode and the photovoltaic performance of TiO 2/ZnO/CdS cell were investigated. It is found that the short circuit current density and conversion efficiency are significantly improved by the introduction of ZnO layer into TiO2/CdS film. A power conversion efficiency of about 1.56% has been obtained for TiO2/ZnO/CdS cell, which is about 57% higher than that for TiO2/CdS cell (0.99%). The formation of an inherent energy barrier between TiO2 and CdS films and the passivation of surface traps on the TiO2 film caused by the introduction of ZnO layer, which reduces the charge recombination and favors the electron transport, should be mainly responsible for the performance enhancement of TiO2/ZnO/CdS cell.

KW - CdS

KW - Quantum dot sensitized solar cell

KW - Ultrasonic spray pyrolysis

KW - ZnO film

UR - https://www.scopus.com/pages/publications/79958825338

U2 - 10.1016/j.jallcom.2011.05.043

DO - 10.1016/j.jallcom.2011.05.043

M3 - 文章

AN - SCOPUS:79958825338

SN - 0925-8388

VL - 509

SP - 7814

EP - 7818

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 29

ER -