Effect of polar molecules on the transport and localization of charge carriers in molecular materials

dc.creator	Sworakowski Juliusz
dc.date	1999
dc.date.accessioned	2013-05-29T23:00:50Z
dc.date.available	2013-05-29T23:00:50Z
dc.date.issued	2013-05-30
dc.identifier	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000200013
dc.identifier	http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=1999&volume=29&issue=2&spage=318
dc.identifier.uri	http://koha.mediu.edu.my:8181/jspui/handle/123456789/2591
dc.description	The influence of polar species on the transport of charge carriers in molecular solids is reviewed. Guest molecules with permanent dipole moments introduced into molecular crystals can act as traps localizing carriers provided certain energetic conditions are fulfilled. In this case their polar character may manifest itself in a field-dependent decrease of the trap depth. Moreover, irrespective of the positions of their energy levels, polar impurities may locally modify the polarization energy thus creating traps on neighbouring molecules. The effect of polar dopants in disordered molecular solids can be described within the model due to Bässler: the presence of polar species broadens the density-of-states function thus decreasing the effective mobility of charge carriers.
dc.publisher	Sociedade Brasileira de Física
dc.source	Brazilian Journal of Physics
dc.title	Effect of polar molecules on the transport and localization of charge carriers in molecular materials

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