PEDOT : PSS [ poly ( 3 , 4 - ethylenedioxythiophene ) : poly ( 4 - styrene sulfonate ) ] , G - PEDOT [ poly ( 3 , 4 - ethylenedioxythiophene ) : poly ( 4 - styrenesulfonate ) : polyglycol ( glycerol ) ] , PANI : CSA polyanilinecamphor sulfonic acid ) , PDBT [ poly ( 4 , 4 '- dimethoxy bithophene ) ] 등 이 사용 될 수 있 다 .