Exciton-Related Electroluminescence from ZnO Nanowire Light-Emitting Diodes

 
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Zimmler, Mariano
Voss, Tobias
Ronning, Carsten
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https://doi.org/10.1063/1.3157274
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Zimmler, Mariano A., Tobias Voss, Carsten Ronning, and Federico Capasso. 2009. Exciton-related electroluminescence from ZnO nanowire light-emitting diodes. Applied Physics Letters 94(24): 241120.
Abstract
The authors study the microscopic origin of the electroluminescence from zinc oxide (ZnO) nanowire light-emitting diodes (LEDs) fabricated on a heavily doped p-type silicon (p-Si) substrate. By comparing the low-temperature photoluminescence and electroluminescence of a single nanowire LED, bound- and free-exciton related recombination processes, together with their longitudinal-optical phonon replicas, can be identified as the origin of both electroluminescence and photoluminescence.
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