1. Department of Physics, University of the Lahore, Lahore 54000, Pakistan
2. Solar Cell Application Research Lab, Department of Physics, Government College University Lahore, Lahore 54000, Pakistan
3. Physics Department, Lahore Garrison University, Lahore 54000, Punjab, Pakistan
4. Department of Physics, Universiry of the Punjab, Lahore 54000, Pakistan
5. Departament d’Enginyeria Química, Universitat Rovira i Virgili, Av Països Catalans 26, Tarragona 43007, Spain
6. Institute of Chemical Engineering and Technology (ICET), University of the Punjab, Lahore 54590, Pakistan