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. https://resolver.caltech.edu/CaltechAUTHORS:20190124-122550312
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Abstract
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.
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| 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 | |||||||||
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| Issue or Number: | 6 | |||||||||
| DOI: | 10.1063/1.5083632 | |||||||||
| Record Number: | CaltechAUTHORS:20190124-122550312 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190124-122550312 | |||||||||
| 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 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 25 Jan 2019 16:17 | |||||||||
| Last Modified: | 16 Nov 2021 03:50 |
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