铝纳米颗粒修饰的氧化锌纳米棒紫外光探测器的制备与性能

Fabrication and Performance of UV Photodetector of ZnO Nanorods Decorated with Al Nanoparticles.

作者信息

Shang Shiguang, Dong Yunpeng, Zhang Wenqian, Ren Wei

机构信息

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.

出版信息

Nanomaterials (Basel). 2022 Oct 26;12(21):3768. doi: 10.3390/nano12213768.

DOI:10.3390/nano12213768

PMID:36364544

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9657189/

Abstract

In this work, localized surface plasmon resonance (LSPR) mediated by aluminum nanoparticles (Al NPs) was investigated to enhance the ultraviolet (UV) response of the zinc oxide nanorods (ZnO NRs) grown by the hydrothermal method. The ZnO NRs were characterized by scanning electron microscope, energy dispersive spectroscopy, X-ray diffractometer, Raman spectrometer, ultraviolet-visible spectrophotometer and fluorescence spectrometer. The results show that the morphology and crystalline structure of the ZnO NRs could not be changed before and after decoration with Al NPs, but the absorption rates in the UV range and the photoluminescence (PL) properties were improved. The photo-to-dark current ratio of ZnO NRs with Al NPs was about 447 for 325 nm UV light (5 mW/cm) at 3.0 V bias, with the sensitivity increasing from 9.5 to 47.8, and the responsivity increasing from 53 to 267 mA/W.

摘要

在这项工作中，研究了由铝纳米颗粒（Al NPs）介导的局域表面等离子体共振（LSPR），以增强通过水热法生长的氧化锌纳米棒（ZnO NRs）的紫外（UV）响应。通过扫描电子显微镜、能量色散光谱仪、X射线衍射仪、拉曼光谱仪、紫外可见分光光度计和荧光光谱仪对ZnO NRs进行了表征。结果表明，用Al NPs修饰前后，ZnO NRs的形貌和晶体结构没有改变，但紫外范围内的吸收率和光致发光（PL）性能得到了改善。在3.0 V偏压下，对于325 nm紫外光（5 mW/cm），具有Al NPs的ZnO NRs的光暗电流比约为447，灵敏度从9.5提高到47.8，响应度从53提高到267 mA/W。