[1] Univ Kebangsaan Malaysia, Solar Energy Res Inst, Bangi 43600, Selangor, Malaysia
[2] Univ Kebangsaan Malaysia, Fac Sci & Technol, Dept Chem, Bangi 43600, Selangor, Malaysia
[3] Univ Kebangsaan Malaysia, Sch Appl Phys, Fac Sci & Technol, Bangi 43600, Selangor De, Malaysia