极地三维有机-无机混合矿实现高度敏感的自动驱动紫外线光探测
Hang Li1,2,3, Zicong Wang3,4, Qianwen Guan1,2,3
1State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
Angewandte Chemie (International ed. in English)
|February 8, 2025
概括
我们开发了一种新的3D极性有机-无机混合矿,用于高性能自动供电的紫外线光检测. 这种材料表现出显著的散装光伏效应 (BPVE) 和增强的载体移动性,超过现有的设备.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 固态物理 固态物理
背景情况:
- 在极性有机-无机混合矿 (OIHPs) 中的自发偏振使大量光伏效应 (BPVE) 实现自动供电的紫外线光检测.
- 目前的紫外光电器件经常使用低维的OIHP,它们的载体流动性有限,光电转换效率较低.
研究的目的:
- 报告第一个极性三维 (3D) OIHPs,MHyPbBr3,用于高性能自动驱动紫外线光检测.
- 为了研究材料的BPVE,载体移动性,以及在紫外线光电子设备中的性能.
主要方法:
- 一个新的极性3DOIHPs的合成和表征,MHyPbBr3.3.
- 在紫外线照明下测量散装光伏效应 (BPVE) 和载体移动寿命产物 (μτ).
- 评价光检测性能,包括响应能力 (R) 和检测能力 (D*).
主要成果:
- MHyPbBr3具有0.33V的显著BPVE和1.972×10−3cm2V−1.1的高载体移动性寿命乘积 (μτ).
- 该材料实现了198mA/W的高响应率 (R) 和1.42×1013Jones的检测能力 (D*).
- 使用MHyPbBr3.3.的可逆相变来证明可控制的紫外线光电检测.
结论:
- 极地3D OIHPs,如MHyPbBr3,为高性能自动驱动紫外线光探测器提供了一个有前途的平台.
- 该材料优越的半导体属性和BPVE有助于其卓越的光检测能力.
- 这项工作为制造具有增强响应的先进的自动驱动紫外线光电子设备铺平了道路.
相关概念视频
Photoelectric Effect
30.7K
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...
30.7K
Photochemical Electrocyclic Reactions: Stereochemistry
1.4K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.4K
UV–Vis Spectroscopy: Molecular Electronic Transitions
3.0K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
3.0K


