Abstract: The tetraphenylsilane-carbazole compound of this invention has the following general formula: wherein R1 and R2 are H, halogen or carbazole having the formula of with at least one of R1 and R2 being carbazole; n=1, 2, 3 or 4; and wherein Si and N substituents are in meta positions on the benzene ring; or wherein R3, R4, R5 and R6 are H, halogen or tetraphenylsilane having the formula of with at least one of R3, R4, R5 and R6 being tetraphenylsilane; and wherein Si and N substituents are in meta positions on the benzene ring. The invented tetraphenylsilane-carbazole compounds are prepared by mixing selected tetraphenylsilane with carbazole in the existence of additives and reacting them under heated conditions, or by mixing selected carbazole with butyl metallic and reacting them under relatively lower temperature. The products may be used as host material for dopants for organic light emitting diode (OLED).