1. Solar Energy Research Institute (SERI) The National University of Malaysia; 43600 Bangi Selangor Malaysia
2. Photovoltaic Materials Unit National Institute for Materials Science; 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
3. Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology; Uppal road Tarnaka Hyderabad 500007 India
4. Department of Environmental and Energy Chemistry Faculty of Engineering; Kogakuin University; 2665-1 Nakano-machi Hachioji-shi Tokyo 192-0015 Japan
5. CRC, Optometry Department College of Applied Medical Sciences King Saud University; Riyadh 11433 Saudi Arabia
6. Dept. of Electrical, Electronic and Systems Engineering; Faculty of Engineering and Built Environment The National University of Malaysia; 43600 Bangi Selangor (Malaysia)