New Progress in Polarization Optoelectronics of Two-Dimensional Hybrid Double Perovskite in Fujian Institute of Physical and Chemical Engineering

[ Instrument Network Instrument R & D ] It is reported that the research team of Luo Junhua, an inorganic optoelectronic functional crystal material of the State Key Laboratory of Structural Chemistry, Fujian Institute of Structural Sciences, Chinese Academy of Sciences With the support of projects such as the Excellent Youth Fund of the National Natural Science Foundation of China, a hybrid biperovskite compound (i-PA) 2CsAgBiBr7 (i-PA is isoamylamine) with a unique two-dimensional quantum hydrazine structure was designed and synthesized.
Polarization photoelectric detection has a very wide range of applications in military, medical, and environmental fields. However, most of the currently reported polarization photodetectors are two-dimensional inorganic compounds. Their small crystal size and poor stability have restricted their practical application. Two-dimensional hybrid double perovskite materials have the characteristics of non-toxicity, good stability, long carrier life, and easy growth of crystals. They show excellent performance in photoelectric detection and high-energy ray detection, and due to their quantum wells The structure has a unique anisotropy, which makes it possible to realize the research of polarized photoelectricity.
In addition, this two-dimensional hybrid double perovskite exhibits unique compatibility and tunability, and can regulate the electronic, optical and optoelectronic properties of materials by regulating organic and inorganic components. However, polarized photoelectric detection based on two-dimensional hybrid double perovskite materials has not been reported. The compound has excellent photoelectric properties, and its polarization photocurrent and polarization angle have a similar sinusoidal relationship, the dichroism ratio reaches 1.35, and the compound has excellent repeatability and stability of the polarized light response switch, and Faster light response time, up to 200 μs.
It is understood that this work is the first report on the research of polarized photoelectricity of two-dimensional hybrid double perovskite compounds, and it shows that the two-dimensional hybrid double perovskite has great research potential in the field of photoelectric detection and other fields. The relevant results were published as a newsletter in Angew. Chem. Int. Ed. 2019, DOI: 10.1002 / anie.201911551. The first author of the thesis is Li Yaobin, a joint graduate student.

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