An organic light emitting device comprising: an anode; a hole transporting layer over the anode, wherein the hole transporting layer is doped with a phosphorescent material; an electron transporting layer over the hole transporting layer, wherein the electron transporting layer is doped with the phosphorescent material; and a cathode over the electron transporting layer; wherein the hole transporting layer comprises a member of the group consisting of 4,4'- bis[ N -(1-naphthyl)- N -phenyl-amino]biphenyl (α- NPD), N,N'-diphenyl-N,N'-bis(3-methylpheny)1-1'biphenyl-4,4'diamine, 4,4'-bis[N,N'-(3-tolyl)amino]-3,3'- dimethylbiphenyl, 4,4',4"-tris(3-methylphenylphenylamino)triphenylamine (MTDATA), 4,4'- bis[N,N'-(3-tolyl)amino]-3,3'- dimethylbiphenyl (HMTPD), and 3,3'-Dimethyl- N 4, N 4, N 4', N 4'- tetra- p -tolyl-biphenyl-4,4'-diamine; wherein the electron transporting layer comprises a member of the group consisting of an oxadiazole, an oxadiazole derivative, a phenanthroline, a substituted benzoxazole, an un-substituted benzoxazole, a substituted benzthiazole, and an un-substituted benzthiazole compound; and wherein the phosphorescent material comprises a member of the group consisting of Platinum (2-phenylpyridinato-N,C 2') (acetyl acetonate) [Pt(ppy)(acac)], Platinum (2-(p-tolyl)pyridinato-N,C 2') (acetyl acetonate) [Pt(tpy)(acac)], Platinum (7,8-benzoquinolinato-N,C 3') (acetyl acetonate) [Pt(bzq)(acac)], Platinum (2-(2'-(4',5'-benzothienyl)pyridinato-N,C 3') (acetyl acetonate) [Pt(btp)(acac)], Platinum (2-(4',6'-difluorophenyl)pyridinato-N,C 2')(acetyl acetonate) [Pt(4,6-F 2 ppy)(acac)], Platinum (2-(4',5'-difluorophenyl) pyridinato-N,C 2') (acetyl acetonate) [Pt(4,5-F 2 ppy)(acac)], Platinum (2-(4',5'-difluorophenyl)pyridinato-N,C 2') (2-picolinato) [Pt(4,5-F 2 ppy)(pico)], and Iridium (2-(4',6'-difluorophenyl)pyridinato-N,C 2') (2-picolinato) [Ir(4,6-F 2 ppy)(pico)]. an anode; a hole transporting layer over the anode, wherein the hole transporting layer is doped with a phosphorescent material; an electron transporting layer over the hole transporting layer, wherein the electron transporting layer is doped with the phosphorescent material; and a cathode over the electron transporting layer; wherein the hole transporting layer comprises a member of the group consisting of 4,4'- bis[ N -(1-naphthyl)- N -phenyl-amino]biphenyl (α- NPD), N,N'-diphenyl-N,N'-bis(3-methylpheny)1-1'biphenyl-4,4'diamine, 4,4'-bis[N,N'-(3-tolyl)amino]-3,3'- dimethylbiphenyl, 4,4',4"-tris(3-methylphenylphenylamino)triphenylamine (MTDATA), 4,4'- bis[N,N'-(3-tolyl)amino]-3,3'- dimethylbiphenyl (HMTPD), and 3,3'-Dimethyl- N 4, N 4, N 4', N 4'- tetra- p -tolyl-biphenyl-4,4'-diamine; wherein the electron transporting layer comprises a member of the group consisting of an oxadiazole, an oxadiazole derivative, a phenanthroline, a substituted benzoxazole, an un-substituted benzoxazole, a substituted benzthiazole, and an un-substituted benzthiazole compound; and wherein the phosphorescent material comprises a member of the group consisting of Platinum (2-phenylpyridinato-N,C 2') (acetyl acetonate) [Pt(ppy)(acac)], Platinum (2-(p-tolyl)pyridinato-N,C 2') (acetyl acetonate) [Pt(tpy)(acac)], Platinum (7,8-benzoquinolinato-N,C 3') (acetyl acetonate) [Pt(bzq)(acac)], Platinum (2-(2'-(4',5'-benzothienyl)pyridinato-N,C 3') (acetyl acetonate) [Pt(btp)(acac)], Platinum (2-(4',6'-difluorophenyl)pyridinato-N,C 2')(acetyl acetonate) [Pt(4,6-F 2 ppy)(acac)], Platinum (2-(4',5'-difluorophenyl) pyridinato-N,C 2') (acetyl acetonate) [Pt(4,5-F 2 ppy)(acac)], Platinum (2-(4',5'-difluorophenyl)pyridinato-N,C 2') (2-picolinato) [Pt(4,5-F 2 ppy)(pico)], and Iridium (2-(4',6'-difluorophenyl)pyridinato-N,C 2') (2-picolinato) [Ir(4,6-F 2 ppy)(pico)].