NDLI: Remarks on a possible physical sense of the value ZT = 1 for semiconductor thermoelectrics

Content Provider	IEEE Xplore Digital Library
Author	Vedernikov, M.V. Ravich, Yu.I.
Copyright Year	1996
Description	Author affiliation: A.F. Ioffe Physicotech. Inst., Acad. of Sci., St. Petersburg, Russia (Vedernikov, M.V.)
Abstract	The problem of the existence of an upper limit of thermoelectric figure of merit Z is of principal importance for thermoelectric energy conversion. It was discussed actively during the period of development of basic aspects of semiconductor thermoelectricity but was not solved. After a long time of silence it attracts attention again. C.B.Vining at ICT'92 considered the well known fact that the dimensionless parameter ZT/spl les/1 for all real thermoelectrics. He concluded that one doesn't know any physical reasons to consider this value as a specific one. Our paper indicates those rather general assumptions at which ZT/spl ap/1 for semiconductors at a qualitative evaluation. It is shown too that the dependence of ZT increase on decrease of lattice thermal conductivity is weaker for semiconductors with ZT>1 than for one with ZT<1.
Starting Page	188
Ending Page	190
File Size	273131
Page Count	3
File Format	PDF
ISBN	0780332210
DOI	10.1109/ICT.1996.553291
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-03-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermoelectricity Thermal conductivity Lattices Phonons Energy conversion Acoustic materials Chemical analysis Conducting materials Statistical analysis Acoustic scattering
Content Type	Text
Resource Type	Article

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