一个可见光光探测器基于CuO纳米粒子和ZnO纳米棒之间的异质连接
Doan Nhat Giang1,2, Nhat Minh Nguyen1,2, Duc Anh Ngo1,2
1Faculty of Materials Science and Technology, University of Science, Ho Chi Minh City 70000, Vietnam.
Beilstein journal of nanotechnology
|November 2, 2023
概括
本研究介绍了一种使用氧化铜 (CuO) 纳米粒子和氧化 (ZnO) 纳米棒的低成本光探测器. 该设备在各种光波长中显示出高性能,表明光电子应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 光电学是指光电子产品.
背景情况:
- 光电子设备在医疗设备,传感器和通信中至关重要.
- 光探测器,将光转化为电信号,是光电子学中的关键组件.
- 开发具有成本效益和高性能光电探测器是一个活跃的研究领域.
研究的目的:
- 开发一种使用CuO纳米粒子和ZnO纳米棒的低成本光探测器.
- 为了研究CuO/ZnO异构的光电子特性.
- 为了探索p-n异质连接的传感机制.
主要方法:
- 合成CuO纳米粒子和ZnO纳米棒.
- 一个CuO/ZnO异构光探测器的制造.
- 在各种光波长 (395,464,532,640 nm) 下对设备性能的描述.
主要成果:
- CuO/ZnO异构光探测器在广泛的光谱中有效运行.
- 在395nm激发下,该设备在2V偏向下实现了高响应性 (1.38A·W-1),光导增益 (4.33),检测能力 (2.58 × 1011 Jones) 和灵敏度 (1934.5%).
- 阐明了p-n异质连接的传感机制.
结论:
- CuO/ZnO异构结构显示了光电子应用的巨大潜力.
- 简单且具有成本效益的合成工艺使这种材料具有商业化的吸引力.
- 这种光电探测器为各种光感应应用提供了有前途的解决方案.
相关概念视频
Photoelectric Effect
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Photoluminescence: Applications
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...


