通过激发偏振门光传感器使紫外线变得可见,以实现能量转移到基于GaN的蓝色辐射中
Chunshuang Chu1, Yao Jiang1, Conglin He1
1School of Integrated Circuits, Guangdong University of Technology, Guangzhou, China.
Light, science & applications
|March 11, 2026
概括
本研究介绍了一种集成的光电子装置,该装置使用化 (GaN) 基迷你发光二极管 (迷你LED) 和一种新型光传感器将紫外线 (UV) 光转化为可见光. 该设备有效地检测弱紫外线信号,使可见光发射用于监控目的.
科学领域:
- 光电学是指光电子产品.
- 材料科学 材料科学 材料科学
- 半导体设备 半导体设备
背景情况:
- 紫外线 (UV) 光的检测和转换仍然具有挑战性.
- 现有的方法可能对弱紫外线信号缺乏灵敏度.
- 基于化 (GaN) 的设备具有独特的光电子特性.
研究的目的:
- 开发一种能够将紫外线光转化为可见光的集成光电子设备.
- 设计一个正常关闭的光电晶体管,使用化 (AlGaN) 极化门来增强紫外线检测.
- 为了证明设备在检测弱紫外线照明和将其转换为可见光方面的性能.
主要方法:
- 一个集成的光电子设备的制造,包括一个基于GaN的蓝色迷你发光二极管 (迷你LED) 和一个光传感器.
- 具有Al0.20Ga0.80N极化门的光电晶体管的设计,以实现正常关闭状态.
- 在不同紫外线激发水平下对设备的电和光性能进行表征.
主要成果:
- 集成设备在10V偏向下表现出极低的1.4 × 10-4 mA的极低状态电流.
- 在12.7mW的紫外线激发下,设备电流在10V偏向下增加到44.4mA.
- 基于GaN的可见迷你LED产生了81.1mW的光学功率,最大的紫外线与可见光功率比为49.8.8.
结论:
- 拟议的集成光电子设备有效地将紫外线光转化为可见光.
- 带有AlGaN极化门的光电晶体管能够灵敏地检测弱紫外线信号.
- 这项技术对于需要高效的紫外线光监测和转换的应用具有前景.
更多相关视频
相关概念视频
G-Protein Gated Ion Channels
6.5K
GPCRs are primarily responsible for our sense of smell, taste, and vision. The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
Sensory...
6.5K
Photoreceptors and Visual Pathways
10.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
10.5K
Biasing of P-N Junction
2.3K
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
2.3K
Photoelectric Effect
40.7K
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...
40.7K
P-N junction
1.5K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.5K
Working Principle of BJT
1.6K
A Bipolar Junction Transistor (BJT), specifically a PNP transistor in a common-base configuration, effectively amplifies or switches electronic signals by controlling the flow of charge carriers. This discussion focuses on its operation in the active mode.
In the PNP configuration, the emitter is heavily doped with positive charge carriers (holes), while the base is lightly doped with negative carriers (electrons). This setup allows for a forward bias across the emitter-base junction,...
In the PNP configuration, the emitter is heavily doped with positive charge carriers (holes), while the base is lightly doped with negative carriers (electrons). This setup allows for a forward bias across the emitter-base junction,...
1.6K


