The photophysical and structural properties of poly(9-vinylcarbazole) and carbon nanospheres (CNS) based composites are investigated. The effect of CNS on the optical and vibrational properties of the new synthesized composite with several concentration weights (1.7, 3 and 5%) and also charge transfer process were examined by various optical and structural characterizations. Scanning and transmission electron microscopy were indented to show the morphology of CNS and their distribution on PVK matrix. States and time resolved photoluminescence decays of composites were used to evidence the charge transfer and dynamical properties of their excited states. The stability and the graphitized degree of CNS were found by Raman scattering analysis. (C) 2018 Elsevier B.V. All rights reserved.