Enhanced conversion efficiency of dye-sensitized titanium dioxide solar cells by Ca-doping

Qiuping Liu; Yang Zhou; Yandong Duan; Min Wang; Xianhui Zhao; Yuan Lin

doi:10.1016/j.jallcom.2012.08.125

Enhanced conversion efficiency of dye-sensitized titanium dioxide solar cells by Ca-doping

Qiuping Liu, Yang Zhou, Yandong Duan, Min Wang, Xianhui Zhao, Yuan Lin

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

31 Scopus citations

Abstract

Ca salts [CaSO₄]-doped TiO₂ electrodes prepared with well-optimized condition by the hydrothermal method show an increase in short-circuit (J_SC), resulting in a power conversion efficiency (PCE) of 8.35%, which is higher than that of the undoped TiO₂ thin film (7.33%). The doping of Ca shifts the flat band potential of TiO₂ photoanode positively and increases the electron density indicated by the Mott-Schottky plot. The driving force of injecting electrons from the LUMO of the dye to the conduct band of TiO₂ improves apparently because of the positive shift of the flat band potential. The intensity-modulated photocurrent spectroscopy measurement confirms that increased electron density accelerates the electrons transfer rate in the Ca-doped TiO₂ thin films by comparison to undoped films.

Original language	English
Pages (from-to)	161-165
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	548
DOIs	https://doi.org/10.1016/j.jallcom.2012.08.125
State	Published - Jan 25 2013
Externally published	Yes

Keywords

Ca-doped film
Dye-sensitized solar cell
Photovoltaic
Titanium dioxide

UN SDGs

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

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10.1016/j.jallcom.2012.08.125

Cite this

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title = "Enhanced conversion efficiency of dye-sensitized titanium dioxide solar cells by Ca-doping",

abstract = "Ca salts [CaSO4]-doped TiO2 electrodes prepared with well-optimized condition by the hydrothermal method show an increase in short-circuit (JSC), resulting in a power conversion efficiency (PCE) of 8.35%, which is higher than that of the undoped TiO2 thin film (7.33%). The doping of Ca shifts the flat band potential of TiO2 photoanode positively and increases the electron density indicated by the Mott-Schottky plot. The driving force of injecting electrons from the LUMO of the dye to the conduct band of TiO2 improves apparently because of the positive shift of the flat band potential. The intensity-modulated photocurrent spectroscopy measurement confirms that increased electron density accelerates the electrons transfer rate in the Ca-doped TiO2 thin films by comparison to undoped films.",

keywords = "Ca-doped film, Dye-sensitized solar cell, Photovoltaic, Titanium dioxide",

author = "Qiuping Liu and Yang Zhou and Yandong Duan and Min Wang and Xianhui Zhao and Yuan Lin",

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doi = "10.1016/j.jallcom.2012.08.125",

language = "English",

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journal = "Journal of Alloys and Compounds",

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publisher = "Elsevier",

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TY - JOUR

T1 - Enhanced conversion efficiency of dye-sensitized titanium dioxide solar cells by Ca-doping

AU - Liu, Qiuping

AU - Zhou, Yang

AU - Duan, Yandong

AU - Wang, Min

AU - Zhao, Xianhui

AU - Lin, Yuan

PY - 2013/1/25

Y1 - 2013/1/25

N2 - Ca salts [CaSO4]-doped TiO2 electrodes prepared with well-optimized condition by the hydrothermal method show an increase in short-circuit (JSC), resulting in a power conversion efficiency (PCE) of 8.35%, which is higher than that of the undoped TiO2 thin film (7.33%). The doping of Ca shifts the flat band potential of TiO2 photoanode positively and increases the electron density indicated by the Mott-Schottky plot. The driving force of injecting electrons from the LUMO of the dye to the conduct band of TiO2 improves apparently because of the positive shift of the flat band potential. The intensity-modulated photocurrent spectroscopy measurement confirms that increased electron density accelerates the electrons transfer rate in the Ca-doped TiO2 thin films by comparison to undoped films.

AB - Ca salts [CaSO4]-doped TiO2 electrodes prepared with well-optimized condition by the hydrothermal method show an increase in short-circuit (JSC), resulting in a power conversion efficiency (PCE) of 8.35%, which is higher than that of the undoped TiO2 thin film (7.33%). The doping of Ca shifts the flat band potential of TiO2 photoanode positively and increases the electron density indicated by the Mott-Schottky plot. The driving force of injecting electrons from the LUMO of the dye to the conduct band of TiO2 improves apparently because of the positive shift of the flat band potential. The intensity-modulated photocurrent spectroscopy measurement confirms that increased electron density accelerates the electrons transfer rate in the Ca-doped TiO2 thin films by comparison to undoped films.

KW - Ca-doped film

KW - Dye-sensitized solar cell

KW - Photovoltaic

KW - Titanium dioxide

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U2 - 10.1016/j.jallcom.2012.08.125

DO - 10.1016/j.jallcom.2012.08.125

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SN - 0925-8388

VL - 548

SP - 161

EP - 165

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Enhanced conversion efficiency of dye-sensitized titanium dioxide solar cells by Ca-doping

Abstract

Keywords

UN SDGs

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