High Energy Optical Transitions in Ga(PN): Contribution from Perturbed Valence Band

Sökning: WFRF:(Tu Xin) > High Energy Optical...

High Energy Optical Transitions in Ga(PN) : Contribution from Perturbed Valence Band

The GaP1–xNx conduction band is investigated experimentally (by excitation photoluminescence) andtheoretically (by pseudopotential supercells) for N concentrations up to x=3.5%and photon energies ranging from the optical absorption edge to3.2 eV. With increasing x: (i) a direct-like absorption edgedevelops smoothly and red-shifts rapidly overtaking energy-pinned cluster states; (ii)a broad absorption plateau appears between the X1c and the1c critical points of GaP; (iii) the 1c absorption edgebroadens and gradually disappears. Empirical pseudopotential calculations for GaP1-xNx randomalloy supercells account well for all the PLE results byconsidering N induced changes in the valence band overlooked sofar. ©2005 American Institute of Physics

Polimeni, A.INFM, Università “La Sapienza”, Roma, Italy (författare)
Capizzi, M.INFM, Università “La Sapienza”, Roma, Italy (författare)
Dudiy, S.V.National Renewable Energy Laboratory, Golden, CO, USA (författare)
Zunger, A.National Renewable Energy Laboratory, Golden, CO, USA (författare)
Buyanova, Irina,1960-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)iribo40 (författare)
Chen, Weimin,1959-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)weich55 (författare)
Xin, H.P.Department of Electrical and Computer Engineering, University of California, La Jolla, CA, USA (författare)
Tu, C.W.Department of Electrical and Computer Engineering, University of California, La Jolla, CA, USA (författare)
INFM, Università “La Sapienza”, Roma, ItalyNational Renewable Energy Laboratory, Golden, CO, USA (creator_code:org_t)

Ingår i:AIP Conference Proceedings / Volume 772: American Institute of Physics (AIP), s. 265-0735402574

Av författaren/redakt...: Felici, M; Polimeni, A.; Capizzi, M.; Dudiy, S.V.; Zunger, A.; Buyanova, Irina, ...; visa fler...; Chen, Weimin, 19 ...; Xin, H.P.; Tu, C.W.; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.