Placzek popko

• Cd-Ga-Mn-Te
• Cd-Mn-Te
• Al-Mg-O-Zn
• Al-O-Zn
• Al-Ga-N
• activation energy
• electronic and electrical properties
• optical properties
• photo-conductivity data
• values of activation energy
• chalcogen
• transitional
• quaternary
• metalloid
• nonmetal
• cubic