Patent ID: 8758880
Filing Date: 2014-06-24
Classification: C08G,H01L,Y02E,Y10T

Abstract:
1. A semiconductor device which contains a layer comprising a compound of the formula (I) or an oligomer or polymer comprising repeating units of the formula (Ia) wherein a, b, c, d, e and f are from the range 0-3; each of A, A′, R or R X is CR where R is as defined for R the index g is 0 or 1 and Ar, if present, is a tetravalent residue connected to the rest of the molecule by 2 chemical double bonds, and is selected from quinoid C Ar R Ar D is —CO—; —COO—; —S—; —SO—; —SO E is —OR G and G′ independently are E; C R R R R′ or a tautomer of such a compound, oligomer or polymer.