光电探测器
材料科学
薄膜
光电效应
光电子学
表面等离子体激元
等离子体子
表面等离子体子
吸收(声学)
纳米颗粒
可见光谱
表面等离子共振
光学
纳米技术
物理
复合材料
作者
Yarui An,Xuan Chu,Yonghui Huang,Yusong Zhi,Daoyou Guo,Peigang Li,Zhenping Wu,Weihua Tang
标识
DOI:10.1016/j.pnsc.2016.01.008
摘要
Surface plasmon polariton (SPP) is electro-magnetic wave coupled to free electron oscillations near the surface of metal, and has been used to improve the photoelectric properties in many optoelectronic devices. In the present study, the Au nanoparticles (NPs)/β-Ga2O3 composite thin film was fabricated through depositing Au ultra-thin film on the β-Ga2O3 thin film followed by post-thermal treatment. Compared to bare β-Ga2O3 thin film, a significant absorption around 510 nm, which is attributed to SPP of Au NPs, was observed in the UV–vis spectrum of Au NPs/β-Ga2O3 composite thin film. The results showed that the photoresponse of Au NPs/Ga2O3 photodetector illuminated under 254 nm+532 nm light was much higher than that illuminated under 254 nm light, indicating an enhancement of photoelectric property for the solar-blind photodetector based on β-Ga2O3 thin film.
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