Patent ID: 8071975
Filing Date: 2011-12-06
Classification: C07C,C07D,C07F,C08G,C08L,C09B,C09K,H01L,H05B,Y10S

Abstract:
1. A photoactive electronic device comprising: (a) an anode; (b) a cathode, said cathode having a work function energy level E (c) a photoactive layer positioned between said anode and said cathode, said photoactive layer comprising a cyclometalated complex of a transition metal, said cyclometalated complex having a LUMO energy level E (d) an electron transport and/or anti-quenching layer, at least one of the electron transport or anti-quenching layer comprising a quinoxaline derivative, positioned between said cathode and said photoactive layer, said electron transport and/or anti-quenching layer having a LUMO energy level E with the proviso that: (1) E1−E3<1 eV, (2) E1−E2>−1 eV, and (3) E4−E5>−1 eV and; wherein the quinoxaline derivative is selected from Formulae VI(a), and VI(h):