Mechanism and Application of Optical Modulation of Terahertz Waves in a Perovskite Heterojunction
Source abstract
Abstract
We investigated the mechanism and application of the modulation of terahertz waves using perovskite heterostructures. At the interface between PEDOT:PSS and the perovskite layers under excitation by an external light source, photogenerated carriers transferred from the perovskite layer to the PEDOT:PSS layer, which was accompanied by charge accumulation. A large number of photogenerated carriers scattered terahertz waves, thereby modulating the terahertz signal in the sample. The process of modulation and recovery of the terahertz signal by a perovskite material under external light is analogous to the principle of biological synapses, which are involved in memory and learning in animal brains. This enabled us to develop perovskite-based synaptic devices. The memory properties of perovskite heterojunction materials open up applications of terahertz technology.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Terahertz technology and applications · Spectroscopy and Laser Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Advanced Innovation Center for Imaging Technology, Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing Key Laboratory of Metamaterials and Devices, Department of Physics, Capital Normal University, Beijing 100048, China
Funding
Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China
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