1. Department of Physics, Parahyangan Catholic University, Jl. Ciumbuleuit 94, Bandung 40141, Indonesia
2. School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, U.K.
3. Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), South Tangerang 15314, Indonesia
4. Research Center for Energy Conversion and Conservation, National Research and Innovation Agency (BRIN), South Tangerang 15314, Indonesia