Liton, M.N., Khan, K.R., Rahman, M.M. and Islam, M.M. 2015. Effect of N and Cu Doping on Structure, Surface Morphology and Photoluminescence Properties of ZnO Thin Films. Journal of Scientific Research. 7, 1-2 (May 2015), 23–34. DOI:https://doi.org/10.3329/jsr.v7i1-2.19573.