Charge-transport processes in molecularly doped polymers: Binder effect

Autor:	Damodar M. Pai, Huoy-Jen Yuh
Rok vydání:	1990
Předmět:	chemistry.chemical_classification Electron mobility Doping Concentration effect Activation energy Polymer Condensed Matter Physics chemistry.chemical_compound chemistry Chemical engineering visual_art Polymer chemistry visual_art.visual_art_medium Polystyrene Polycarbonate Solid solution
Zdroj:	Philosophical Magazine Letters. 62:61-66
ISSN:	1362-3036 0950-0839
DOI:	10.1080/09500839008203740
Popis:	Hole transport has been investigated in films of solid solutions of N,N′-diphenyl-N,N′-bis(3-methylphenyl)-[1,1′-biphenyl]-4,4′-diamine (TPD) in bisphenol A polycarbonate and polystyrene. Rather than being ‘inert’ as previously assumed, the binder plays a major role in influencing the rate of charge exchange between molecules. It is found that the absolute values of the drift mobilities, their electric-field dependence and the activation energies are strong functions of the binder polymer employed to cast the films. At equivalent low molecular concentrations, the hole mobility in films of molecular dispersions in polystyrene is two orders of magnitude higher than that observed in dispersions in polycarbonate, on which most investigations reported in the literature have been carried out. The increased mobility of dispersions in polystyrene is directly related to the reduction in the activation energies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d4ad5052a2078948a91e6235d90787eb https://doi.org/10.1080/09500839008203740 Zobrazit plný text záznamu