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Title: Tunable photovoltaic effect and solar cell performance of self-doped perovskite SrTiO3
Authors: Jin, K.X
Li, Y.F
Wang, Z.L
Peng, H.Y
Lin, W.N 
Kyaw, A.K.K
Jin, Y.L
Jin, K.J
Sun, X.W
Soci, C
Wu, T
Keywords: Complex oxides
High mobility
Oxide electronics
Power conversion efficiencies
Room temperature
Schottky junctions
Solar cell performance
Thin surface layer
UV illuminations
Conversion efficiency
Photovoltaic effects
Semiconductor junctions
Solar cells
Strontium titanates
Single crystals
Issue Date: 2012
Citation: Jin, K.X, Li, Y.F, Wang, Z.L, Peng, H.Y, Lin, W.N, Kyaw, A.K.K, Jin, Y.L, Jin, K.J, Sun, X.W, Soci, C, Wu, T (2012). Tunable photovoltaic effect and solar cell performance of self-doped perovskite SrTiO3. AIP Advances 2 (4) : 42131. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
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. © 2012 Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License.
Source Title: AIP Advances
ISSN: 21583226
DOI: 10.1063/1.4766279
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

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