8 March 2001 Photothermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions
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Proceedings Volume 4318, Smart Optical Inorganic Structures and Devices; (2001) https://doi.org/10.1117/12.417602
Event: Advanced Optical Materials and Devices, 2000, Vilnius, United States
Abstract
Our study is concerned with the photo-thermovoltaic effects caused by the absorption of CO2 laser light in narrow gap AIVBVI semiconductors. We report on results of experimental study of photoresponse induced in n-type and p- type lead telluride with Ni contacts. We show that in the case of ohmic contacts (n-PbTe-Ni and p-PbTe-Ni at 300K) the detected signal originated from thermoemf due to created crystal lattice temperature gradient. In the case of p- PbTe-Ni at 80K we have Schottky contacts and the photoresponse consists at least of two components: fast and great in value photoemf- due to carrier generation resulting from two-photon absorption, and slow as well as of lower magnitude thermoemf.
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Steponas P. Asmontas, Steponas P. Asmontas, Z. Dashevsky, Z. Dashevsky, M. P. Dariel, M. P. Dariel, Jonas Gradauskas, Jonas Gradauskas, A. Jarashneli, A. Jarashneli, S. Shusterman, S. Shusterman, Algirdas Suziedelis, Algirdas Suziedelis, Gintaras Valusis, Gintaras Valusis, } "Photothermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions", Proc. SPIE 4318, Smart Optical Inorganic Structures and Devices, (8 March 2001); doi: 10.1117/12.417602; https://doi.org/10.1117/12.417602
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