Pd Nanoparticle Adsorption ZnO Nanorods for Enhancing Photodetector UV-Sensing Performance

IEEE Journal of the Electron Devices Society

Yi-Hsing Liu¹  Sheng-Joue Young² 

[1] Department of Electrical Engineering, Institute of Microelectronics, Advanced Optoelectronic Technology Center, Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, Taiwan;Department of Electronic Engineering, National United University, Miaoli, Taiwan;

关键词: Palladium nanoparticles (Pd NPs);    UV photodetector;    ZnO nanorods;   

DOI  :  10.1109/JEDS.2021.3050606

来源: DOAJ

【 摘 要 】

Ultraviolet (UV) detection is an important index, as UV rays can cause skin diseases in humans. To enhance the performance of UV photodetectors, we fabricated palladium nanoparticles(Pd NPs) modified ZnO nanorods. The surface morphology is observed by using transmission electron microscopy and transmission electron microscopy. The crystal structure is analysed by using X-ray diffraction. The optical property is investigated by using photoluminescence spectra. The I_dark of the ZnO and Pd/ZnO samples was 5.05 × 10^-8 and 2.24 × 10^-9 A when a 1 V bias was applied. On the other hand, the I_photo of the ZnO and Pd/ZnO samples was 2.56 × 10^-6 and 4.38 × 10^-6 A when the sample is illuminated UV light (365 nm). The current ratio of I_photo/I_dark for the ZnO and Pd/ZnO samples was 50.8 and 1960, respectively. The enhanced performance of the Pd NPs can produce a strong electric field after light is absorbed via the localised surface plasmon resonance effect.

【 授权许可】

Unknown