Development of thin film thermoelectric sensors for a wide spectral range in the MEMS configuration

Z. Dashevsky, E. Rabih, V. Kasiyan, A. Halfin, M. P. Dariel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Thermal sensors have applications in various areas of science and engineering for detection, measurement, observation and control of radiation. The basic elements of these sensors are the absorbing layer and the thin film battery of thermocouples that measures the temperature difference between this layer and the ambient. At present, such sensors can be manufactured by the micro machining process. The essential feature of these sensors is a very thin silica substrate layer. In designing the sensor, the properties of all the layers must be taken into account for optimization of its structure. The sensors detectivity is controlled by the figure of merit of the thermoelectric layer. PbTe is well known material that has found widespread applications in thermoelectric devices. PbTe based materials display unique properties, which are used for optimization of the figure of merit of n- and p-type thermoelectric layers. A simulation model for estimating the characteristics of the film thermoelectric sensor was presented. It was shown Volt-Watt sensitivity is ≈ 350 V/W for a sensor based on PbTe thermoelectric battery deposited on thin SiO2 layer (thickness ≈ 1μm). The construction of this sensor can be realized in MEMS design using a Si substrate.

Original languageEnglish
Title of host publicationProceedings ICT'06 - 25th International Conference on Thermoelectrics
Pages180-183
Number of pages4
DOIs
StatePublished - 1 Dec 2006
EventICT'06 - 25th International Conference on Thermoelectrics - Vienna, Austria
Duration: 6 Aug 200610 Aug 2006

Publication series

NameInternational Conference on Thermoelectrics, ICT, Proceedings

Conference

ConferenceICT'06 - 25th International Conference on Thermoelectrics
Country/TerritoryAustria
CityVienna
Period6/08/0610/08/06

ASJC Scopus subject areas

  • Engineering (all)

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