[ Instrument Network Instrument R & D ] Materials are those substances that people use to make articles, devices, components, machines or other products. Materials are substances, but not all substances can be called materials. Due to the variety, there is no single standard for classification. According to the physical and chemical properties, it can be divided into metal materials, inorganic non-metal materials, organic polymer materials and composite materials composed of different types of materials. In terms of use, they are divided into electronic materials, aerospace materials, nuclear materials, building materials, energy materials, and biological materials. The two more common classification methods are structural materials and functional materials.
Today, what I want to say to you is a newly developed material that can be used in instruments: polarized photoelectric detection crystal material has made new progress. Let's take a look at it.
It is reported that the new material is the first time in the two-dimensional organic-inorganic funded by the Luo Junhua Research Group of the Fujian Institute of Architecture of the Chinese Academy of Sciences under the National Natural Science Foundation of China key project, the National Outstanding Youth Fund, the National Academy of Sciences Fundamental Frontiers 0-1 Original Innovation Project and the Chinese Academy of Sciences Perovskite ferroelectrics realize bulk photovoltaic-driven high-polarization photodetection.
What is polarized photoelectric detection? It has broad application prospects in remote sensing, near-field imaging, optical switching, communication, and high-resolution detection. However, limited by the anisotropy of the material / device structure, the realization of light detection with high polarization characteristics in traditional semiconductor materials is still a huge challenge. The high polarization characteristics (bulk photovoltaic effect) inherent in ferroelectric photovoltaic materials provide a new solution for efficient polarized photovoltaic detection. In particular, organic-inorganic hybrid perovskite ferroelectric materials, which have emerged in recent years, have shown great potential in high-polarization photoelectric detection due to their large spontaneous polarization strength and excellent semiconductor properties.
In addition, driven by bulk photovoltaics, the compound exhibits highly efficient polarized photodetection, with a polarization ratio as high as ~ 15, far exceeding the traditional photodetection materials based on structural anisotropy. Optoelectronic materials refer to materials used in the manufacture of various optoelectronic devices. This work opens a new way to design photoelectric detection materials with high polarization characteristics, and further expands the application of inorganic organic hybrid ferroelectric materials in intelligent optoelectronic devices.
Source: Fujian Institute of Architecture, Encyclopedia
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