Enhanced photovoltaic properties in graphene/polycrystalline BiFeO 3/Pt heterojunction structure

Yongyuan Zang; Dan Xie; Xiao Wu; Yu Chen; Yuxuan Lin; Mohan Li; He Tian; Xiao Li; Zhen Li; Hongwei Zhu; Tianling Ren; David Plant

doi:10.1063/1.3644134

Enhanced photovoltaic properties in graphene/polycrystalline BiFeO ₃/Pt heterojunction structure

Yongyuan Zang, Dan Xie, Xiao Wu, Yu Chen, Yuxuan Lin, Mohan Li, He Tian, Xiao Li, Zhen Li, Hongwei Zhu, Tianling Ren, David Plant

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

110 Scopus citations

Abstract

We report the enhanced photovoltaic properties in polycrystalline BiFeO₃ (BFO) thin films with graphene as top electrodes. The short circuit current density (J_sc) and open circuit voltage of the heterojunction are measured to be 25 μA/cm² and 0.44 V, respectively, much higher than the reported values for polycrystalline BFO with indium tin oxide (ITO) as top electrodes. Influence of HNO₃ treatment on the photovoltaic properties is studied, and a significant photocurrent density improvement from 25 μA/cm² to 2.8 mA/cm² is observed. A metal-intrinsic semiconductor-metal model is proposed to explain the graphene induced enhancement comparing with traditional ITO.

Original language	English
Article number	132904
Journal	Applied Physics Letters
Volume	99
Issue number	13
DOIs	https://doi.org/10.1063/1.3644134
State	Published - 26 Sep 2011
Externally published	Yes

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title = "Enhanced photovoltaic properties in graphene/polycrystalline BiFeO 3/Pt heterojunction structure",

abstract = "We report the enhanced photovoltaic properties in polycrystalline BiFeO3 (BFO) thin films with graphene as top electrodes. The short circuit current density (Jsc) and open circuit voltage of the heterojunction are measured to be 25 μA/cm2 and 0.44 V, respectively, much higher than the reported values for polycrystalline BFO with indium tin oxide (ITO) as top electrodes. Influence of HNO3 treatment on the photovoltaic properties is studied, and a significant photocurrent density improvement from 25 μA/cm2 to 2.8 mA/cm2 is observed. A metal-intrinsic semiconductor-metal model is proposed to explain the graphene induced enhancement comparing with traditional ITO.",

author = "Yongyuan Zang and Dan Xie and Xiao Wu and Yu Chen and Yuxuan Lin and Mohan Li and He Tian and Xiao Li and Zhen Li and Hongwei Zhu and Tianling Ren and David Plant",

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T1 - Enhanced photovoltaic properties in graphene/polycrystalline BiFeO 3/Pt heterojunction structure

AU - Zang, Yongyuan

AU - Xie, Dan

AU - Wu, Xiao

AU - Chen, Yu

AU - Lin, Yuxuan

AU - Li, Mohan

AU - Tian, He

AU - Li, Xiao

AU - Li, Zhen

AU - Zhu, Hongwei

AU - Ren, Tianling

AU - Plant, David

PY - 2011/9/26

Y1 - 2011/9/26

N2 - We report the enhanced photovoltaic properties in polycrystalline BiFeO3 (BFO) thin films with graphene as top electrodes. The short circuit current density (Jsc) and open circuit voltage of the heterojunction are measured to be 25 μA/cm2 and 0.44 V, respectively, much higher than the reported values for polycrystalline BFO with indium tin oxide (ITO) as top electrodes. Influence of HNO3 treatment on the photovoltaic properties is studied, and a significant photocurrent density improvement from 25 μA/cm2 to 2.8 mA/cm2 is observed. A metal-intrinsic semiconductor-metal model is proposed to explain the graphene induced enhancement comparing with traditional ITO.

AB - We report the enhanced photovoltaic properties in polycrystalline BiFeO3 (BFO) thin films with graphene as top electrodes. The short circuit current density (Jsc) and open circuit voltage of the heterojunction are measured to be 25 μA/cm2 and 0.44 V, respectively, much higher than the reported values for polycrystalline BFO with indium tin oxide (ITO) as top electrodes. Influence of HNO3 treatment on the photovoltaic properties is studied, and a significant photocurrent density improvement from 25 μA/cm2 to 2.8 mA/cm2 is observed. A metal-intrinsic semiconductor-metal model is proposed to explain the graphene induced enhancement comparing with traditional ITO.

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U2 - 10.1063/1.3644134

DO - 10.1063/1.3644134

M3 - 文章

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Enhanced photovoltaic properties in graphene/polycrystalline BiFeO ₃/Pt heterojunction structure

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