ZnO doped with transition metal ions

Pearton, S.J.Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United States (författare)

Spin-dependent phenomena in ZnO may lead to devices with new or enhanced functionality, such as polarized solid-state light sources and sensitive biological and chemical sensors. In this paper, we review the experimental results on transition metal doping of ZnO and show that the material can be made with a single phase at high levels of Co incorporation (~ 15 at.%) and exhibits the anomalous Hall effect. ZnO is expected to be one of the most promising materials for room-temperature polarized light emission, but to date, we have been unable to detect the optical spin polarization in ZnO. The short spin relaxation time observed likely results from the Rashba effect. Possible solutions involve either cubic phase ZnO or the use of additional stressor layers to create a larger spin splitting in order to get a polarized light emission from these structures or to look at alternative semiconductors and fresh device approaches. © 2007 IEEE.

Norton, D.P.Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United States (författare)
Ivill, M.P.Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United States (författare)
Hebard, A.F.Department of Physics, University of Florida, Gainesville, FL 32611, United States (författare)
Zavada, J.M.Army Research Office, Research Triangle Park, NC 27709, United States (författare)
Chen, WeiminLinköpings universitet,Tekniska högskolan,Funktionella elektroniska material(Swepub:liu)weich55 (författare)
Buyanova, Irina A.Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material(Swepub:liu)iribo40 (författare)
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United StatesDepartment of Physics, University of Florida, Gainesville, FL 32611, United States (creator_code:org_t)

Ingår i:IEEE Transactions on Electron Devices54:5, s. 1040-10480018-93831557-9646

Av författaren/redakt...: Pearton, S.J.; Norton, D.P.; Ivill, M.P.; Hebard, A.F.; Zavada, J.M.; Chen, Weimin; visa fler...; Buyanova, Irina ...; visa färre...

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