期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 49, 期 32, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/49/32/325103
关键词
silver nanowire; sheet resistance; diffuse transmission; n-ZnO/p-GaN heterojunction; localized surface plasmon
资金
- NSFC [51172041, 51202026, 91233204, 51372035, 51422201, 61574031, 11204029]
- 973 Program [2012CB933703]
- '111' project [B13013]
- Fund from Jilin Province [20140309012GX, 20140201008GX, 20130416020ZG]
- Fundamental Research Funds for the Central Universities [2412015BJ003]
- Doctoral Fund of Ministry of Education of China [20110043120004, 20130043110004]
- Fundamental Research Fund of Ministry of Education of China [113020A]
- [SKLLIM1404]
In this paper, we prepared the silver nanowires (AgNWs)/aluminum-doped zinc oxide (AZO) composite transparent conducting electrodes for n-ZnO/p-GaN heterojunction light emitting-diodes (LEDs) by drop casting AgNW networks and subsequent atomic layer deposition (ALD) of AZO at 150 degrees C. The contact resistances between AgNWs were dramatically reduced by pre-annealing in the vacuum chamber before the ALD of AZO. In this case, AZO works not only as the conformal passivation layer that protects AgNWs from oxidation, but also as the binding material that improves AgNWs adhesion to substrates. Due to the localized surface plasmons (LSPs) of the AgNWs resonant coupling with the ultraviolet (UV) light emission from the LEDs, a higher UV light extracting efficiency is achieved from LEDs with the AgNWs/AZO composite electrodes in comparison with the conventional AZO electrodes. Additionally, the antireflective nature of random AgNW networks in the composite electrodes caused a broad output light angular distribution, which could be of benefit to certain optoelectronic devices like LEDs and solar cells.
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