Authors: V. Naveen Kumar; P. S. Brahmanandam; M. Purnachandra Rao; G. Anil Kumar; K. Samatha; L. Rupa Dhanasri; Department of Basic Science, Gudlavalleru Engineering College, Gudlavalleru - 521356, Andhra Pradesh, India; Departmentof Basic Science, Shri Vishnu Engineering College for Women, Bhimavaram - 534202, Andhra Pradesh,
India; Departmentof Physics, Andhra University, Visakhapatnam - 530003, Andhra Pradesh, India; School of Renewable Energy and Environment, JNTUK, Kakinada - 533003, Andhra Pradesh, India; Departmentof Physics, Andhra University, Visakhapatnam - 530003, Andhra Pradesh, India; Department of ECE, Shri Vishnu Engineering College for Women, Bhimavaram - 534202, Andhra Pradesh, India