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Photovoltaic effect in multi-domain ferroelectric perovskite oxides

Teh, Ying Shi and Bhattacharya, Kaushik (2019) Photovoltaic effect in multi-domain ferroelectric perovskite oxides. Journal of Applied Physics, 125 (6). Art. No. 064103. ISSN 0021-8979. doi:10.1063/1.5083632.

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We propose a device model that elucidates the role of domain walls in the photovoltaic effect in multi-domain ferroelectric perovskites. The model accounts for the intricate interplay between ferroelectric polarization, space charges, photo-generation, and electronic transport. When applied to bismuth ferrite, results show a significant electric potential step across both 71° and 109° domain walls, which in turn contributes to the photovoltaic (PV) effect. We also find a strong correlation between polarization and oxygen octahedra tilts, which indicates the nontrivial role of the latter in the PV effect. The domain wall-based PV effect is further shown to be additive in nature, allowing for the possibility of generating the above-bandgap voltage.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Teh, Ying Shi0000-0003-1743-4158
Bhattacharya, Kaushik0000-0003-2908-5469
Additional Information:© 2019 Published under license by AIP Publishing. Submitted: 29 November 2018; Accepted: 24 January 2019; Published Online: 13 February 2019. Ying Shi Teh gratefully acknowledges the support of the Resnick Institute at Caltech through the Resnick Graduate Research Fellowship.
Group:Resnick Sustainability Institute
Funding AgencyGrant Number
Resnick Sustainability InstituteUNSPECIFIED
Issue or Number:6
Record Number:CaltechAUTHORS:20190124-122550312
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Official Citation:Photovoltaic effect in multi-domain ferroelectric perovskite oxides. Ying Shi Teh and Kaushik Bhattacharya. Journal of Applied Physics 2019 125:6. doi: 10.1063/1.5083632
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92455
Deposited By: George Porter
Deposited On:25 Jan 2019 16:17
Last Modified:16 Nov 2021 03:50

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