Author(s): Li, J (Li, Jing); Xi, X (Xi, Xin); Li, XD (Li, Xiaodong); Lin, S (Lin, Shan); Ma, ZH (Ma, Zhanhong); Xiu, HX (Xiu, Huixin); Zhao, LX (Zhao, Lixia)
Source: ADVANCED OPTICAL MATERIALS Article Number: 1902162 DOI: 10.1002/adom.201902162 Early Access Date: FEB 2020
Abstract: Composite nanostructures with plasmonic metals can introduce optical resonances and enhance optoelectronic performance significantly. In this work, novel lateral porous GaN/Ag nanowires (NWs) composite nanostructure-based UV photodetectors were designed and fabricated, and the detectivity is up to 10(15) Jones at V = 1 V with a fast response speed of approximate to 180 mu s under UV illumination, which is more than approximate to 10(5) times faster than that of the photodetectors without Ag NWs. Combined with finite-difference time-domain simulations, the results show that such superior performance is mainly attributed to the surface plasmon resonance effect, which leads to a strong light trapping and efficient carriers' transport process at the lateral porous GaN/Ag NWs interfaces. This approach paves a way to realize ultra-sensitive UV photodetectors with fast response through plasmonic metal/semiconductor nanocomposites, which are desirable for applications in optical switches, optical logical operations, and lightwave communications.
Accession Number: WOS:000515108600001
Author Identifiers:
AuthorWeb of Science ResearcherIDORCID Number
zhao, lixia 0000-0002-0466-247X
ISSN: 2195-1071
Full Text: https://onlinelibrary.wiley.com/doi/full/10.1002/adom.201902162