1. Universitas Negeri Malang,Center of Advanced Material and Renewable Energy (PUI PT CAMRY, UM),Department of Electrical Engineering,Malang,Indonesia
2. Universitas Negeri Malang,Department of Electrical Engineering,Malang,Indonesia
3. Universitas Negeri Malang,Department of Physics,Malang,Indonesia
4. Universiti Teknologi Malaysia,Department of Electrical Engineering,Johor Bahru,Malaysia