Enhanced photo-collection in single BiFeO3 nanowire due to carrier separation from radial surface field

Autor:	Ravi Gaikwad, Kovur Prashanthi, Priyesh Dhandharia, Thomas Thundat, D. Barlage, N. Miriyala
Rok vydání:	2015
Předmět:	Radial surface Materials science Field (physics) Renewable Energy Sustainability and the Environment business.industry Nanowire Carrier lifetime Semiconductor Fermi level pinning Optoelectronics General Materials Science Electrical and Electronic Engineering business Nanoscopic scale Surface states
Zdroj:	Nano Energy. 13:240-248
ISSN:	2211-2855
DOI:	10.1016/j.nanoen.2015.02.014
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0425143cf7bf6b39ce52706e2a7492a9 https://doi.org/10.1016/j.nanoen.2015.02.014 Zobrazit plný text záznamu Full Text from ScienceDirect