by S. Fernández-Garrido, J. Pereiro, F. González-Posada, E. Muñoz, E. Calleja, A. Redondo-Cubero and R. Gago
Abstract:
Room temperature photoluminescence and optical absorption spectra have been measured in wurtzite InxAlyGa1−x−yNInxAlyGa1−x−yNtextlessmath display=”inline” overflow=”scroll” altimg=”eq-00001.gif”textgreatertextlessmrowtextgreatertextlessmsubtextgreatertextlessmi mathvariant=”normal”textgreaterIntextless/mitextgreatertextlessmitextgreaterxtextless/mitextgreatertextless/msubtextgreatertextlessmsubtextgreatertextlessmi mathvariant=”normal”textgreaterAltextless/mitextgreatertextlessmitextgreaterytextless/mitextgreatertextless/msubtextgreatertextlessmsubtextgreatertextlessmi mathvariant=”normal”textgreaterGatextless/mitextgreatertextlessmrowtextgreatertextlessmntextgreater1textless/mntextgreatertextlessmotextgreater−textless/motextgreatertextlessmitextgreaterxtextless/mitextgreatertextlessmotextgreater−textless/motextgreatertextlessmitextgreaterytextless/mitextgreatertextless/mrowtextgreatertextless/msubtextgreatertextlessmi mathvariant=”normal”textgreaterNtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater (x∼0.06x∼0.06textlessmath display=”inline” overflow=”scroll” altimg=”eq-00002.gif”textgreatertextlessmrowtextgreatertextlessmitextgreaterxtextless/mitextgreatertextlessmotextgreater∼textless/motextgreatertextlessmntextgreater0.06textless/mntextgreatertextless/mrowtextgreatertextless/mathtextgreater, 0.02textlessytextless0.270.02textlessytextless0.27textlessmath display=”inline” overflow=”scroll” altimg=”eq-00003.gif”textgreatertextlessmrowtextgreatertextlessmntextgreater0.02textless/mntextgreatertextlessmotextgreater<textless/motextgreatertextlessmitextgreaterytextless/mitextgreatertextlessmotextgreater<textless/motextgreatertextlessmntextgreater0.27textless/mntextgreatertextless/mrowtextgreatertextless/mathtextgreater) layers grown by molecular beam epitaxy. Photoluminescence spectra show both an enhancement of the integrated intensity and an increasing Stokes shift with the Al content. Both effects arise from an Al-enhanced exciton localization revealed by the S- and W-shaped temperature dependences of the photoluminescence emission energy and bandwidth, respectively. Present results point to these materials as a promising choice for the active region in efficient light emitters. An In-related bowing parameter of 1.6eV1.6eVtextlessmath display=”inline” overflow=”scroll” altimg=”eq-00004.gif”textgreatertextlessmrowtextgreatertextlessmntextgreater1.6textless/mntextgreatertextlessmspace width=”0.3em”textgreatertextless/mspacetextgreatertextlessmitextgreatereVtextless/mitextgreatertextless/mrowtextgreatertextless/mathtextgreater was derived from optical absorption data.
Reference:
S. Fernández-Garrido, J. Pereiro, F. González-Posada, E. Muñoz, E. Calleja, A. Redondo-Cubero and R. Gago, “Photoluminescence enhancement in quaternary III-nitrides alloys grown by molecular beam epitaxy with increasing Al content”, Journal of Applied Physics, vol. 103, no. 4, pp. 046104.
Bibtex Entry:
@article{fernandez-garrido_photoluminescence_2008,
title = {Photoluminescence enhancement in quaternary {III}-nitrides alloys grown by molecular beam epitaxy with increasing {Al} content},
volume = {103},
issn = {0021-8979},
url = {http://aip.scitation.org/doi/10.1063/1.2874451},
doi = {10.1063/1.2874451},
abstract = {Room temperature photoluminescence and optical absorption spectra have been measured in wurtzite InxAlyGa1−x−yNInxAlyGa1−x−yN{textless}math display="inline" overflow="scroll" altimg="eq-00001.gif"{textgreater}{textless}mrow{textgreater}{textless}msub{textgreater}{textless}mi mathvariant="normal"{textgreater}In{textless}/mi{textgreater}{textless}mi{textgreater}x{textless}/mi{textgreater}{textless}/msub{textgreater}{textless}msub{textgreater}{textless}mi mathvariant="normal"{textgreater}Al{textless}/mi{textgreater}{textless}mi{textgreater}y{textless}/mi{textgreater}{textless}/msub{textgreater}{textless}msub{textgreater}{textless}mi mathvariant="normal"{textgreater}Ga{textless}/mi{textgreater}{textless}mrow{textgreater}{textless}mn{textgreater}1{textless}/mn{textgreater}{textless}mo{textgreater}−{textless}/mo{textgreater}{textless}mi{textgreater}x{textless}/mi{textgreater}{textless}mo{textgreater}−{textless}/mo{textgreater}{textless}mi{textgreater}y{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/msub{textgreater}{textless}mi mathvariant="normal"{textgreater}N{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} (x∼0.06x∼0.06{textless}math display="inline" overflow="scroll" altimg="eq-00002.gif"{textgreater}{textless}mrow{textgreater}{textless}mi{textgreater}x{textless}/mi{textgreater}{textless}mo{textgreater}∼{textless}/mo{textgreater}{textless}mn{textgreater}0.06{textless}/mn{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater}, 0.02{textless}y{textless}0.270.02{textless}y{textless}0.27{textless}math display="inline" overflow="scroll" altimg="eq-00003.gif"{textgreater}{textless}mrow{textgreater}{textless}mn{textgreater}0.02{textless}/mn{textgreater}{textless}mo{textgreater}<{textless}/mo{textgreater}{textless}mi{textgreater}y{textless}/mi{textgreater}{textless}mo{textgreater}<{textless}/mo{textgreater}{textless}mn{textgreater}0.27{textless}/mn{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater}) layers grown by molecular beam epitaxy. Photoluminescence spectra show both an enhancement of the integrated intensity and an increasing Stokes shift with the Al content. Both effects arise from an Al-enhanced exciton localization revealed by the S- and W-shaped temperature dependences of the photoluminescence emission energy and bandwidth, respectively. Present results point to these materials as a promising choice for the active region in efficient light emitters. An In-related bowing parameter of 1.6eV1.6eV{textless}math display="inline" overflow="scroll" altimg="eq-00004.gif"{textgreater}{textless}mrow{textgreater}{textless}mn{textgreater}1.6{textless}/mn{textgreater}{textless}mspace width="0.3em"{textgreater}{textless}/mspace{textgreater}{textless}mi{textgreater}eV{textless}/mi{textgreater}{textless}/mrow{textgreater}{textless}/math{textgreater} was derived from optical absorption data.},
number = {4},
urldate = {2017-10-06},
journal = {Journal of Applied Physics},
author = {Fernández-Garrido, S. and Pereiro, J. and González-Posada, F. and Muñoz, E. and Calleja, E. and Redondo-Cubero, A. and Gago, R.},
month = feb,
year = {2008},
pages = {046104},
file = {Full Text PDF:E:\cmam_papers\files\893\Fernández-Garrido et al. - 2008 - Photoluminescence enhancement in quaternary III-ni.pdf:application/pdf;Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\DYC7DEX3\Fernández-Garrido et al. - 2008 - Photoluminescence enhancement in quaternary III-ni.pdf:application/pdf;Snapshot:E:\cmam_papers\files\894\1.html:text/html;Snapshot:E:\Usuarios\Administrator\Zotero\storage\QRJS9CDD\1.html:text/html},
}