1. Laboratory of Nanomaterials for Renewable Energy and Artificial Photosynthesis (NanoREAP), Institute of Physics, UFRGS, Av Bento Goncalves 9500, 91509-900, Porto Alegre, Rio Grande do Sul, Brazil
2. Department of Physics, Riphah International University, Chamru Pur Lahore, Punjab, 54000, Pakistan