Patent ID: 8742253
Filing Date: 2014-06-03
Classification: H01L,Y02E

Abstract:
1. A photovoltaic device for converting light to electrical energy wherein (a) the primary light absorbing component, comprising multibandgap n-CIS compounds, selected from In-rich (Cu 2 Se)(In 2 Se 3 ) n+1 group of semiconductors, where n is an integer >0, is combined with (b) mid-gap component(s), having bandgap wider than said n-CIS absorber, and comprising semiconductor compounds, selected from IB-VII-VIx, IB-IIA-VI-VII, metal halides, chalcogenides and oxides, and (c) a widegap conducting window component, comprising at least one material selected from: arylamines and aromatic polyamines; naphthalocyanines and derivatives thereof; doped fullerenes; functionalized fullerenes and fullerene derivatives thereof; magnesium phthalocyanines, rubrenes and oxadiazoles; conjugated polymers including poly(aniline) and derivatives thereof; poly(pyrrole) and derivatives thereof; and/or blends of these materials; halides, pseudo-halides, oxides or chalcogenides of IB, IIB and III metals; oxides or chalcogenides of IB-III alloys.