TY - JOUR
T1 - Ultra-High and Fast Ultraviolet Response Photodetectors Based on Lateral Porous GaN/Ag Nanowires Composite Nanostructure
AU - Li, Jing
AU - Xi, Xin
AU - Li, Xiaodong
AU - Lin, Shan
AU - Ma, Zhanhong
AU - Xiu, Huixin
AU - Zhao, Lixia
N1 - Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/4/1
Y1 - 2020/4/1
N2 - 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 1015 Jones at V = 1 V with a fast response speed of ≈180 µs under UV illumination, which is more than ≈105 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.
AB - 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 1015 Jones at V = 1 V with a fast response speed of ≈180 µs under UV illumination, which is more than ≈105 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.
KW - Ag nanowires
KW - UV photodetectors
KW - composite nanostructures
KW - fast-response photodetectors
KW - lateral porous GaN
KW - surface plasmon resonant effect
UR - https://www.scopus.com/pages/publications/85083909349
U2 - 10.1002/adom.201902162
DO - 10.1002/adom.201902162
M3 - 文章
AN - SCOPUS:85083909349
SN - 2195-1071
VL - 8
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 8
M1 - 1902162
ER -