Defect-induced infrared electroluminescence from radial GaInP/AlGaInP quantum well nanowire array light- emitting diodes

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Hussain, LaiqHögskolan i Halmstad,Halmstad University,Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Halmstad Embedded and Intelligent Systems Research (EIS),Solid State Physics and NanoLund, Lund University, Lund, Sweden (author)

Defect-induced infrared electroluminescence from radial GaInP/AlGaInP quantum well nanowire array light- emitting diodes

Article/chapterEnglish2017

Publisher, publication year, extent ...

2017-11-09
Bristol :IOP Publishing,2017

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LIBRIS-ID:oai:lup.lub.lu.se:20cc34e3-c849-4cd0-a490-afce4eff8527
https://lup.lub.lu.se/record/20cc34e3-c849-4cd0-a490-afce4eff8527URI
https://doi.org/10.1088/1361-6528/aa913cDOI
https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-35497URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

Notes

Radial GaInP/AlGaInP nanowire array light-emitting diodes (LEDs) are promising candidates for novel high-efficiency solid state lighting due to their potentially large strain-free active emission volumes compared to planar LEDs. Moreover, by proper tuning of the diameter of the nanowires, the fraction of emitted light extracted can be significantly enhanced compared to that of planar LEDs. Reports so far on radial growth of nanowire LED structures, however, still point to significant challenges related to obtaining defect-free radial heterostructures. In this work, we present evidence of optically active growth-induced defects in a fairly broad energy range in vertically processed radial GaInP/AlGaInP quantum well nanowire array LEDs using a variety of complementary experimental techniques. In particular, we demonstrate strong infrared electroluminescence in a spectral range centred around 1 eV (1.2 μm) in addition to the expected red light emission from the quantum well. Spatially resolved cathodoluminescence studies reveal a patchy red light emission with clear spectral features along the NWs, most likely induced by variations in QW thickness, composition and barriers. Dark areas are attributed to infrared emission generated by competing defect-assisted radiative transitions, or to trapping mechanisms involving non-radiative recombination processes. Possible origins of the defects are discussed.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Nanoteknik Nanoteknik hsv//swe
ENGINEERING AND TECHNOLOGY Nano-technology Nano-technology hsv//eng
NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
defect-induced emission
GaInP LED
infrared emission
light-emitting diode
nanowire LED
radial core-shell nanowires
radial core-shell nanowires

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Karimi, MohammadHögskolan i Halmstad,Halmstad University,Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Halmstad Embedded and Intelligent Systems Research (EIS),Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:hh)mohkar (author)
Berg, AlexanderLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:lu)ftf-abr (author)
Jain, VishalHögskolan i Halmstad,Halmstad University,Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Halmstad Embedded and Intelligent Systems Research (EIS),Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:hh)visjai (author)
Borgström, Magnus T.Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:lu)ftf-mbo (author)
Gustafsson, AndersLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:lu)ftf-agu (author)
Samuelson, LarsLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:lu)ftf-lsa (author)
Pettersson, HåkanHögskolan i Halmstad,Halmstad University,Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Halmstad Embedded and Intelligent Systems Research (EIS),Solid State Physics and NanoLund, Lund University, Lund, Sweden(Swepub:hh)hape (author)
NanoLund: Centre for NanoscienceAnnan verksamhet, LTH (creator_code:org_t)

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