Thin-film electroluminescence

This project involved further theoretical and experimental work on thin film electroluminescence (TFEL) devices. A theoretical study was carried out to calculate the cross sections of collision excitation processes of the luminescence centers in TFEL devices. Cross sections for ZnS:Mn(2+), ZnF2:Mn; ZnS:TbF3, AnF2:TbF3, Y2O3:Tb(3+), and Y2O3:Eu(3+). Experiments were begun to fabricate EL cells designed for the purpose of measuring the energy distribution of the hot carriers in TFEL devices; to get a better idea of the quantitative electrical behavior of TFEL cells; and to estimate at the range of hot carriers in ZnF2Mn films.