1. Engineering Physics and Electronics Department, Azerbaijan Technical University, 25 H. Javid ave., Baku, AZ 1073, Azerbaijan
2. Conversions of Renewable Energy Types Laboratory, Institute of Radiation Problems, 9 B. Vahabzade str., Baku, AZ1143, Azerbaijan
3. Epitaxial Layers and Structures Laboratory, Institute of Physics, 131 H. Javid ave., Baku, AZ 1143, Azerbaijan