Xianfeng Qiao, Jiangshan Chen, Xinglin Li, and Dongge Ma Conduction mechanism in molybdenum trioxide (MoO)-doped hole- and electron-type organic semiconductors is investigated. The used hole-transporting materials are N,N-diphenyl-N,N-bis(1-naphthylphenyl)-1, 1-biphen4, 4-diamine, 4,4-tri(N-carbazolyl)triphenylamine, 4, 4-N,N-dicarbazole-biphenyl, and pen ... [J. Appl. Phys. 107, 104505 (2010)] published Mon May 24, 2010.