Photo-thermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions

S. Ašmontas; Z. Dashevsky; M. P. Dariel; J. Gradauskas; A. Jarashneli; S. Shusterman; A. Sužiedėlis; G. Valušis

doi:10.1117/12.417602

Photo-thermovoltaic effects induced by CO₂ laser illumination of PbTe-metal junctions

S. Ašmontas, Z. Dashevsky, M. P. Dariel, J. Gradauskas, A. Jarashneli, S. Shusterman, A. Sužiedėlis, G. Valušis

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Our study is concerned with the photo-thermovoltaic effects caused by the absorption of CO₂ laser light in narrow gap A^IVB^VI 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 originates 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 career generation resulting from two-photon absorption, and slow as well as of lower magnitude thermoemf.

Original language	English
Pages (from-to)	230-234
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4318
DOIs	https://doi.org/10.1117/12.417602
State	Published - 1 Jan 2001

Keywords

Detection
Infrared
Lead telluride
Thermoemf
Two-photon absorption

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.417602

Cite this

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title = "Photo-thermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions",

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 originates 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 career generation resulting from two-photon absorption, and slow as well as of lower magnitude thermoemf.",

keywords = "Detection, Infrared, Lead telluride, Thermoemf, Two-photon absorption",

author = "S. A{\v s}montas and Z. Dashevsky and Dariel, {M. P.} and J. Gradauskas and A. Jarashneli and S. Shusterman and A. Su{\v z}iedėlis and G. Valu{\v s}is",

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T1 - Photo-thermovoltaic effects induced by CO2 laser illumination of PbTe-metal junctions

AU - Ašmontas, S.

AU - Dashevsky, Z.

AU - Dariel, M. P.

AU - Gradauskas, J.

AU - Jarashneli, A.

AU - Shusterman, S.

AU - Sužiedėlis, A.

AU - Valušis, G.

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Y1 - 2001/1/1

N2 - 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 originates 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 career generation resulting from two-photon absorption, and slow as well as of lower magnitude thermoemf.

AB - 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 originates 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 career generation resulting from two-photon absorption, and slow as well as of lower magnitude thermoemf.

KW - Detection

KW - Infrared

KW - Lead telluride

KW - Thermoemf

KW - Two-photon absorption

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