Patent ID: 7186358
Filing Date: 2007-03-06
Classification: H01L,Y02E

Abstract:
1. A polymer dopant comprising at least one electron accepting group that is bound to the polymer to induce or enhance the charge carrier mobility or electrical conductivity of said polymer, said polymer containing recurring units of formula I wherein P Sp is, each independently, a spacer group, G is an electron accepting group, R is an organic group that modifies the surface energy of the polymer, m, n, o are, independently of each other, 0 or 1, wherein in each recurring unit of formula I m+n+o>0, and in at least one of these recurring units m is 1, and p is an integer from 1 to 500,000, wherein the electron accepting group is of formula and wherein the spacer group is of formula, wherein Alkyl denotes an alkyl, fluoroalkyl or oxaalkyl group with 1 to 15 C atoms, and the asterisk denotes the side that is linked to the polymer backbone.