Tunable photovoltaic effect and solar cell performance of self-doped perovskite SrTiO3

K. X. Jin; Y. F. Li; Z. L. Wang; H. Y. Peng; W. N. Lin; A. K.K. Kyaw; Y. L. Jin; K. J. Jin; X. W. Sun; C. Soci; Tom Wu

doi:10.1063/1.4766279

Tunable photovoltaic effect and solar cell performance of self-doped perovskite SrTiO₃

K. X. Jin, Y. F. Li, Z. L. Wang, H. Y. Peng, W. N. Lin, A. K.K. Kyaw, Y. L. Jin, K. J. Jin, X. W. Sun, C. Soci, Tom Wu^*

^*Corresponding author for this work

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

29 Scopus citations

Abstract

We report on the tunable photovoltaic effect of self-doped single-crystal SrTiO₃ (STO), a prototypical perovskite-structured complex oxide, and evaluate its performance in Schottky junction solar cells. The photovaltaic characteristics of vacuum-reduced STO single crystals are dictated by a thin surface layer with electrons donated by oxygen vacancies. Under UV illumination, a photovoltage of 1.1 V is observed in the as-received STO single crystal, while the sample reduced at 750 °C presents the highest incident photon to carrier conversion efficiency. Furthermore, in the STO/Pt Schottky junction, a power conversion efficiency of 0.88% was achieved under standard AM 1.5 illumination at room temperature. This work establishes STO as a high-mobility photovoltaic semiconductor with potential of integration in self-powered oxide electronics.

Original language	English (US)
Article number	042131
Journal	AIP ADVANCES
Volume	2
Issue number	4
DOIs	https://doi.org/10.1063/1.4766279
State	Published - Dec 2012
Externally published	Yes

Bibliographical note

Funding Information:
We acknowledge the support from the National Research Foundation of Singapore. This work is also supported in part by the National Natural Science Foundation of China (NSFC) (Project Nos. 61006037, 61076015 and 51172183).

ASJC Scopus subject areas

General Physics and Astronomy

UN SDGs

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

Access to Document

10.1063/1.4766279

Cite this

@article{3e1d8c674c064fbd998e355368c60694,

title = "Tunable photovoltaic effect and solar cell performance of self-doped perovskite SrTiO3",

abstract = "We report on the tunable photovoltaic effect of self-doped single-crystal SrTiO3 (STO), a prototypical perovskite-structured complex oxide, and evaluate its performance in Schottky junction solar cells. The photovaltaic characteristics of vacuum-reduced STO single crystals are dictated by a thin surface layer with electrons donated by oxygen vacancies. Under UV illumination, a photovoltage of 1.1 V is observed in the as-received STO single crystal, while the sample reduced at 750 °C presents the highest incident photon to carrier conversion efficiency. Furthermore, in the STO/Pt Schottky junction, a power conversion efficiency of 0.88% was achieved under standard AM 1.5 illumination at room temperature. This work establishes STO as a high-mobility photovoltaic semiconductor with potential of integration in self-powered oxide electronics.",

author = "Jin, {K. X.} and Li, {Y. F.} and Wang, {Z. L.} and Peng, {H. Y.} and Lin, {W. N.} and Kyaw, {A. K.K.} and Jin, {Y. L.} and Jin, {K. J.} and Sun, {X. W.} and C. Soci and Tom Wu",

note = "Funding Information: We acknowledge the support from the National Research Foundation of Singapore. This work is also supported in part by the National Natural Science Foundation of China (NSFC) (Project Nos. 61006037, 61076015 and 51172183).",

year = "2012",

month = dec,

doi = "10.1063/1.4766279",

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AU - Jin, K. X.

AU - Li, Y. F.

AU - Wang, Z. L.

AU - Peng, H. Y.

AU - Lin, W. N.

AU - Kyaw, A. K.K.

AU - Jin, Y. L.

AU - Jin, K. J.

AU - Sun, X. W.

AU - Soci, C.

AU - Wu, Tom

N1 - Funding Information: We acknowledge the support from the National Research Foundation of Singapore. This work is also supported in part by the National Natural Science Foundation of China (NSFC) (Project Nos. 61006037, 61076015 and 51172183).

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Y1 - 2012/12

N2 - We report on the tunable photovoltaic effect of self-doped single-crystal SrTiO3 (STO), a prototypical perovskite-structured complex oxide, and evaluate its performance in Schottky junction solar cells. The photovaltaic characteristics of vacuum-reduced STO single crystals are dictated by a thin surface layer with electrons donated by oxygen vacancies. Under UV illumination, a photovoltage of 1.1 V is observed in the as-received STO single crystal, while the sample reduced at 750 °C presents the highest incident photon to carrier conversion efficiency. Furthermore, in the STO/Pt Schottky junction, a power conversion efficiency of 0.88% was achieved under standard AM 1.5 illumination at room temperature. This work establishes STO as a high-mobility photovoltaic semiconductor with potential of integration in self-powered oxide electronics.

AB - We report on the tunable photovoltaic effect of self-doped single-crystal SrTiO3 (STO), a prototypical perovskite-structured complex oxide, and evaluate its performance in Schottky junction solar cells. The photovaltaic characteristics of vacuum-reduced STO single crystals are dictated by a thin surface layer with electrons donated by oxygen vacancies. Under UV illumination, a photovoltage of 1.1 V is observed in the as-received STO single crystal, while the sample reduced at 750 °C presents the highest incident photon to carrier conversion efficiency. Furthermore, in the STO/Pt Schottky junction, a power conversion efficiency of 0.88% was achieved under standard AM 1.5 illumination at room temperature. This work establishes STO as a high-mobility photovoltaic semiconductor with potential of integration in self-powered oxide electronics.

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