Ordered Nanowire Array Blue/Near-UV Light Emitting Diodes

Ordered Nanowire Array Blue/Near-UV Light Emitting Diodes

Blue/near‐UV light emitting diodes composed of position controlled n‐ZnO nanowires arrays and a p‐GaN thin film substrate are demonstrated. Under forward bias, each single nanowire is a light emitter. By Gaussian deconvolution of the emission spectrum, the origins of the blue/near‐UV emission are as...

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Veröffentlicht in:Advanced materials (Weinheim) 2010-11, Vol.22 (42), p.4749-4753
Hauptverfasser: Xu, Sheng, Xu, Chen, Liu, Ying, Hu, Youfan, Yang, Rusen, Yang, Qing, Ryou, Jae-Hyun, Kim, Hee Jin, Lochner, Zachary, Choi, Suk, Dupuis, Russell, Wang, Zhong Lin
Format: Artikel
Sprache:eng
Schlagworte:
Color
Electric Conductivity
Electrodes
Gallium - chemistry
Nanotechnology - instrumentation
Nanowires - chemistry
Temperature
Ultraviolet Rays
Zinc Oxide - chemistry
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Beschreibung
Zusammenfassung:Blue/near‐UV light emitting diodes composed of position controlled n‐ZnO nanowires arrays and a p‐GaN thin film substrate are demonstrated. Under forward bias, each single nanowire is a light emitter. By Gaussian deconvolution of the emission spectrum, the origins of the blue/near‐UV emission are assigned specifically to three distinct electron‐hole recombination processes. The LEDs give an external quantum efficiency of 2.5%.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201002134