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Role of domain walls in the abnormal photovoltaic effect in BiFeO3
Open accessAbstract
Recently, the anomalous photovoltaic (PV) effect in BiFeO3 (BFO) thin films, which resulted in open circuit voltages (Voc) considerably larger than the band gap of the material, has generated a revival of the entire field of photoferroelectrics. Here, via temperature-dependent PV studies, we prove that the bulk photovoltaic (BPV) effect, which has been studied in the past for many non-centrosymmetric materials, is at the origin of the anomalous PV effect in BFO films. Moreover, we show that irrespective of the measurement geometry, Voc as high as 50 V can be achieved by controlling the conductivity of domain walls (DW). We also show that photoconductivity of the DW is markedly higher than in the bulk of BFO. The origin of the abnormal photovoltaic effect in bismuth ferrite thin films, which causes voltages larger than the band gap, is poorly understood. Bhatnagar et al.show that this effect can be attributed to a bulk photovoltaic effect and that it can be enhanced by controlling domain wall conductivity.
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Cites
Lithium niobate: Summary of physical properties and crystal structure
Weis, R. S., & Gaylord, T. K. (1985) · Applied Physics A Solids and Surfaces · doi:10.1007/bf00614817 · Cited by 1,868 · cited 1×
“By substituting the values of the coefficients from equation (24)–(29) in equation (23), the calculated PV current in the parallel measurement geometry is”
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Cited by
Topological nature of nonlinear optical effects in solids
Morimoto, T., & Nagaosa, N. (2016) · Science Advances · doi:10.1126/sciadv.1501524 · Cited by 569
Yang, M.-M., Kim, D. J., & Alexe, M. (2018) · Science · doi:10.1126/science.aan3256 · Cited by 452
Self-citationShift current bulk photovoltaic effect in polar materials—hybrid and oxide perovskites and beyond
Tan, L. Z., Zheng, F., Young, S. M., Wang, F., Liu, S., & Rappe, A. M. (2016) · npj Computational Materials · doi:10.1038/npjcompumats.2016.26 · Cited by 393
BiFeO3epitaxial thin films and devices: past, present and future
Sando, D., Barthélémy, A., & Bibes, M. (2014) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/26/47/473201 · Cited by 353
Mid-infrared semimetal polarization detectors with configurable polarity transition
Wei, J., Xu, C., Dong, B., Qiu, C.-W., & Lee, C. (2021) · Nature Photonics · doi:10.1038/s41566-021-00819-6 · Cited by 213
Metadata
- Authors
- Bhatnagar, A., Roy Chaudhuri, A., Heon Kim, Y., Hesse, D., & Alexe, M.
- Venue
- Nature Communications
- Published
- 2013-11-27
- Volume
- 4
- Issue
- 1
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2151853087
- Cited by
- 586
- References
- 1
- FWCI
- 12.36
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Bhatnagar, A., Roy Chaudhuri, A., Heon Kim, Y., Hesse, D., & Alexe, M. (2013). Role of domain walls in the abnormal photovoltaic effect in BiFeO3. Nature Communications. https://doi.org/10.1038/ncomms3835
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