Correlation of morphology and charge transport in poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT-PSS) films

Autor:	Sangeeth, C. S. Suchand, Jaiswal, Manu, Menon, Reghu
Rok vydání:	2010
Předmět:	Condensed Matter - Materials Science
Zdroj:	J. Phys.: Condens. Matter Vol. 21 page 072101 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1088/0953-8984/21/7/072101
Popis:	A wide variation in the charge transport properties of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) films is attributed to the degree of phase-segregation of the excess insulating polyanion. The results indicate that the charge transport in PEDOT-PSS can vary from hopping to critical regime of the metal-insulator transition, depending on the subtle details of morphology. The extent of electrical-connectivity in films, directly obtained from a temperature dependent high-frequency transport study, indicates various limiting factors to the transport, which are correlated with the phase separation process. The low temperature magnetotransport further supports this morphology-dependent transport scenario. Comment: 18 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1009.4328 Zobrazit plný text záznamu View this record from Arxiv