Patent ID: 8519088
Filing Date: 2013-08-27
Classification: H01L,Y02E

Abstract:
1. An assembly of photovoltaic cells, comprising a plurality of solar cells displaying a plurality of different earth-toned colors, wherein each of said solar cells comprises a donor-acceptor (DA) π-conjugated polymer and an acceptor moiety, wherein said earth-toned color arises from structures and proportions of said (DA) π-conjugated polymer and said acceptor moiety, wherein said plurality of different earth-toned colored solar cells are coupled into an assembly, wherein at least one of said plurality of earth-toned colored solar cells has a structurally different composition of said DA π-conjugated polymer and/or acceptor moiety than others of said plurality of earth-toned colored solar cells in said assembly, and wherein at least one of said solar cells comprises: wherein R is ethylhexyl in PMB-250 and octyl in PMB-282 and n is the number of repeating units.