NDLI: Characterization of nanowire light-emitting diodes grown by selective-area metal-organic vapor-phase epitaxy

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Characterization of nanowire light-emitting diodes grown by selective-area metal-organic vapor-phase epitaxy

Content Provider	Scilit
Author	Motohisa, Junichi Kameda, Hiroki Sasaki, Masahiro Tomioka, Katsuhiro
Copyright Year	2019
Description	Journal: Nanotechnology We report a systematic study on the current injection and radiative carrier recombination in InP nanowire (NW) light-emitting diodes (LEDs). The InP NWs with axial pn structures, grown by selective-area metal organic vapor-phase epitaxy, had mixed crystal structures between those of zincblende (ZB) and wurtzite (WZ), mainly in the p-regions. The temperature dependence of the current-voltage (I–V), electroluminescence (EL), and current-light output (I–L) characteristics was investigated. The temperature dependence of the I–V characteristics revealed that tunneling was the main mechanism of carrier transport through the pn junction in the present NW-LEDs. The temperature and bias voltage dependences of EL showed a complex but systematic behavior, where peaks exhibiting bias-dependent and independent energy positions coexisted and the relative intensity showed a transition with increasing temperature. The external quantum efficiency showed a droop at low temperatures, indicating a reduced injection efficiency at low temperatures. These observations were explained by the radiative and nonradiative tunneling, and suggested a strong effect of the nonradiative tunneling at low temperatures.
Related Links	http://iopscience.iop.org/article/10.1088/1361-6528/aafce5/pdf
ISSN	09574484
e-ISSN	13616528
DOI	10.1088/1361-6528/aafce5
Journal	Nanotechnology
Issue Number	13
Volume Number	30
Language	English
Publisher	IOP Publishing
Publisher Date	2019-01-09
Access Restriction	Open
Subject Keyword	Journal: Nanotechnology Applied Physics Light-emitting Diode Metal-organic Vapor-phase Epitaxy Radiative Tunneling Selective-area Growth
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering

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