%0 Journal Article %T Electronic Structure and Non-Linear Optical Properties of Neutral and Ionic Pyrene and Its Derivatives Based on Density Functional Theory %A A. Lawal %A A. Musa %A A. S. Gidado %A H. Abdulaziz %J Journal of Materials Science Research and Reviews %D 2019 %X (1) Dr. Moumi Pandit, Associate Professor, Department of Electrical & Electronics Engineering, Sikkim Manipal Institute of Technology, Sikkim Manipal University, India. %U http://www.sciencedomain.org/abstract/28123