NDLI: Exploring and exploiting the influence of the compression mechanism on the transport properties of CrF<sub>3</sub>

Content Provider	Royal Society of Chemistry (RSC)
Author	Reshak, A. H.
Copyright Year	2015
Abstract	We have explored the influence of the compression mechanism and the temperature on the transport properties of CrF3. The charge carrier concentration decreases with increasing temperature while it decreases with increasing pressure up to 1.84 GPa; then, after a notable increase in the carrier concentration occurs to reach the maximum value when the pressure rises up to 3.43 GPa, further increases in pressure cause a significant reduction in the carrier concentration to reach the lowest value at 5.43 GPa. Raising the pressure up to 8.56 GPa causes a huge increase in the carrier concentration. An increase in pressure up to 9.12 GPa leads to a drop in the carrier concentration again to the lowest value which was already obtained at 5.43 GPa. Therefore, the pressure value 3.43 GPa is the optimal pressure to gain the highest carrier concentration. It has been found that an electrical conductivity reduction occurs by increasing the temperature within the investigated pressure range. The electrical conductivity significantly increases with increasing pressure, suggesting that the CrF3 could be a good thermoelectric material. Increasing the temperature within the investigated pressure range causes significant increases (almost linearly) in the Seebeck coefficient. The Seebeck coefficient represents n-/p-type conductions. The electronic thermal conductivity ke increases linearly with increasing temperature, and at high temperature one can see that increasing the pressure causes a small reduction in ke. It has been noted that the power factor is zero till 160 K, then above this temperature the power factor increases rapidly with increasing temperature. At high temperatures a reduction in power factor occurs with increasing pressure.
Starting Page	47569
Ending Page	47578
Page Count	10
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	59
Journal	RSC Advances
DOI	10.1039/c5ra03178h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Electrical resistivity and conductivity Seebeck coefficient Thermoelectric materials Seebeck Extrinsic semiconductor Charge carrier Chromium trifluoride Thermal conductivity Power factor
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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