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Creating intermediate bands in ZnTe via co-alloying approach

Title
Creating intermediate bands in ZnTe via co-alloying approach
Authors
Kim, J[Kim, Junho]Yin, WJ[Yin, Wan-Jian]Kang, J[Kang, Joongoo]Yan, Y[Yan, Yanfa]Wei, SH[Wei, Su-Huai]Al-Jassim, MM[Al-Jassim, Mowafak M.]
DGIST Authors
Kang, J[Kang, Joongoo]
Issue Date
2014-12
Citation
Applied Physics Express, 7(12)
Type
Article
Article Type
Article
Keywords
AlloyingCalculationsCharge TransferDonor-Acceptor PairsDonor-AcceptorsDonor and AcceptorDoping (Additives)Energy GapFirst-Principles CalculationIntermediate BandsOrbital EnergyZinc Compounds
ISSN
1882-0778
Abstract
We propose an effective co-alloying approach to creating an intermediate band (IB) in bulk ZnTe. First-principles calculations show that a donor-acceptor co-alloying scheme can produce an IB within the band gap of ZnTe and that the position of the IB can be tuned by choosing appropriate donor-acceptor pairs. We find that the position of the IB is governed by the atomic d-orbital energies of dopants, and also by the charge transfer between donor and acceptor atoms and their subsequent intra- and inter-Coulomb interactions. Therefore, the location of the IB can be manipulated by selecting donors and acceptors with desirable d-orbital energies and electronegativities. © 2014 The Japan Society of Applied Physics
URI
http://hdl.handle.net/20.500.11750/2990
DOI
10.7567/APEX.7.121201
Publisher
Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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