1. Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Science &Technology, Universiti Malaysia Pahang , Kuantan, 26300 Pahang, Malaysia
2. Department
of Fundamental and Applied Sciences, Universiti Teknologi Petronas
, Tronoh, 31750
Perak Darul Ridzuan, Malaysia
3. Department of Materials Science & Engineering, National University of Singapore , Singapore 117543, Singapore