The photoacoustoelectric effect of the SAW amplification in the structure of Graphene-Piezocrystal LiNbO3
Tynyshtykbaev K.B. Insepov Z.
1 June 2021Institute of Physics
Nano Express
2021#2Issue 2
The work presents and analyzes the results of detecting the photoacoustoelectric effect of surface acoustic waves amplification by illumination of a hybrid graphene-LiNbO3 structure. This SAW photoamplification effect is associated with the appearance of an additional photoacoustoelectric current and a decrease of collisional scattering of photoinduced electrons under the action of the SAW electric field. Possible mechanisms of SAW amplification based on the analysis of modern data are discussed. This SAW photoamplification effect can be used to create optoacoustoelectronic devices on a graphene-piezoelectric structures for collecting, amplifying, and detecting superweak sources of THz-radiation photons.
amplification , graphene , photo acoustoelectric effect , piezocrystal , surface acoustic wave , THz- radiation
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Nazarbayev University, st. Kabanbai batyr 53, 010000, Kazakhstan
Institute of Microelectronics Technology and High-Purity Materials, RAS, Acad. Osipyan st. 6, Chernogolovka, Moscow, 142432, Russian Federation
National Research Nuclear University MEPhI, Moscow, Russian Federation
Purdue University, West Lafayette, IN, United States
Nazarbayev University
Institute of Microelectronics Technology and High-Purity Materials
National Research Nuclear University MEPhI
Purdue University
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