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Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO 3
Abstract
Unidirectional electric current flow, such as that found in a diode, is essential for modern electronics. It usually occurs at asymmetric interfaces such as p-n junctions or metal/semiconductor interfaces with Schottky barriers. We report on a diode effect associated with the direction of bulk electric polarization in BiFeO 3 : a ferroelectric with a small optical gap edge of ∼2.2 electron volts. We found that bulk electric conduction in ferroelectric monodomain BiFeO 3 crystals is highly nonlinear and unidirectional. This diode effect switches its direction when the electric polarization is flipped by an external voltage. A substantial visible-light photovoltaic effect is observed in BiFeO 3 diode structures. These results should improve understanding of charge conduction mechanisms in leaky ferroelectrics and advance the design of switchable devices combining ferroelectric, electronic, and optical functionalities.
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Citations
Cited by
Advances in magnetoelectric multiferroics
Spaldin, N. A., & Ramesh, R. (2019) · Nature Materials · doi:10.1038/s41563-018-0275-2 · Cited by 1,766
Tip-enhanced photovoltaic effects in bismuth ferrite
Alexe, M., & Hesse, D. (2011) · Nature Communications · doi:10.1038/ncomms1261 · Cited by 451
A Resistive Memory in Semiconducting BiFeO3 Thin‐Film Capacitors
Jiang, A. Q., Wang, C., Jin, K. J., Liu, X. B., Scott, J. F., Hwang, C. S., Tang, T. A., Lu, H. B., & Yang, G. Z. (2011) · Advanced Materials · doi:10.1002/adma.201004317 · Cited by 438
Shift 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
Bandgap Engineering of Lead‐Halide Perovskite‐Type Ferroelectrics
Ye, H., Liao, W., Hu, C., Zhang, Y., You, Y., Mao, J., Li, P., & Xiong, R. (2016) · Advanced Materials · doi:10.1002/adma.201505224 · Cited by 367
Metadata
- Authors
- Choi, T., Lee, S., Choi, Y. J., Kiryukhin, V., & Cheong, S.-W.
- Venue
- Science
- Published
- 2009-04-03
- Volume
- 324
- Issue
- 5923
- Pages
- 63-66
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2012254064
- Cited by
- 1,984
- References
- 0
- FWCI
- 35.21
- Type
- journal article
- Language
- en
- Open access
- closed
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- Choi, T., Lee, S., Choi, Y. J., Kiryukhin, V., & Cheong, S.-W. (2009). Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO 3. Science. https://doi.org/10.1126/science.1168636
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