OICC Press International Nano Letters 2228-5326 3 1 (December 2013) 2013 02 18 Realization of ZnO/PVK transparent heterojunction by solution processing routes 10.1186/2228-5326-3-9 EN Prakash Thanigainathan Department of Medical Bionanotechnology, Chettinad Hospital and Research Institute, Kelambakkam, Tamilnadu, 603103, IN Chandrasekar Paramasivan Department of Physics, Saveetha Engineering College, Chennai, Tamil Nadu, 602 105, IN Journal Article 2013 02 18 Abstract In this work, transparent heterojunction between zinc oxide (ZnO) and poly( N -vinyl carbazole) (PVK) was fabricated by solution processing techniques such as spin-coating and dip-coating techniques; then, its performance was studied using current ( I )-voltage ( V ) measurement at room temperature. Before fabricating the heterojunction, initially, the growth characteristics of both thin films were independently optimized on a well-cleaned glass substrate, then its structural properties, optical properties, and surface topography were characterized using an X-ray diffractometer, UV-VIS-NIR spectrophotometer, and atomic force microscope, respectively. The structural analysis confirms the existence of a PVK thin film in amorphous nature and ZnO thin film in hexagonal crystal structure. The transparent nature of the heterojunction was found to be more than 85% in the visible and NIR regions with the absorption onset in the ultraviolet region. The observed experimental results explored the possibilities of fabricating ZnO/PVK transparent heterojunction by solution-based routes on a transparent fluorine-doped tin oxide substrate for transparent electronics applications.