Enhanced photo-collection in single BiFeO 3 nanowire due to carrier separation from radial surface field
Nano Energy, ISSN: 2211-2855, Vol: 13, Page: 240-248
2015
- 32Citations
- 27Captures
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Article Description
Enhanced photo-collection and increased carrier lifetimes in semiconductor BiFeO 3 (BFO) single nanowire under visible illumination have been reported in this paper. As a direct result of radial surface potential due to Fermi level pinning caused by high density of surface states in BFO nanowire, a highly efficient carrier separation has been observed. The measured carrier lifetimes in BFO nanowire are three orders magnitude higher than the reported values in bulk. We have obtained the equilibrium carrier concentration ~5.4×10 17 /cm 3 and assumed a mobility value ~3 cm 2 (V/s) at room temperature in the BFO nanowire. We believe that BFO nanowires with visible photo-response and long carrier life time are promising for nanoscale optoelectronic applications.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2211285515000737; http://dx.doi.org/10.1016/j.nanoen.2015.02.014; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84924545701&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2211285515000737; https://dx.doi.org/10.1016/j.nanoen.2015.02.014
Elsevier BV
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