[EN] POLYMERS AND THEIR USE IN PHOTOVOLTAIC DEVICES<br/>[FR] POLYMÈRES ET LEUR UTILISATION DANS DES DISPOSITIFS PHOTOVOLTAÏQUES
申请人:LANXESS DEUTSCHLAND GMBH
公开号:WO2014074027A1
公开(公告)日:2014-05-15
The present invention provides polymers comprising repeating units represented by the formula (I): wherein n is the number of repeating units, R1, R2, R3, R4 are the same or mutually different and represent a hydrogen atom, a halogen atom, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, a mono-valent heterocyclic group, a heterocyclic thio group, an amino group, a substituted amino group, a silyl group, a substituted silyl group, an acyl group, an acyloxy group, an imine residue, an amide group, an acid imide group, a carboxyl group, a substituted carboxyl group, a cyano group or a nitro group, R5, R6 are the same or mutually different and represent a C1-C20 alkyl group and X represents formula (II) wherein Y=N-R7 or CR8R9 or SiR8R9, and R7, R8, R9 represent in each case a C1-C20 alkyl group or have the same meanings as R1, R2, R3, R4, R5 or R6 and their use in photovoltaic devices.