Vacuum Ultraviolet Reflectivity of Cd_1-xFe_xTe

Allocation and Properties of Iron States in Cd1-xFexTe in Forbidden Gap Energy Range

“…On the basis of the results of these measurements there has been recognized a state of iron, identified as the so-called deep donor and its ionization energy related to the transition Fe2+(d6 ) → Fe3+(d5 ) has been calculated to be 1.45 eV with respect to the bottom of the conduction band minimum (CBM). The existence of the donor-like state and its ionization energy value has been confirmed [6,8].…”

“…On the basis of the results of these measurements there has been recognized a state of iron, identified as the so-called deep donor and its ionization energy related to the transition Fe2+(d6 ) → Fe3+(d5 ) has been calculated to be 1.45 eV with respect to the bottom of the conduction band minimum (CBM). The existence of the donor-like state and its ionization energy value has been confirmed [6,8].Our reflectivity (RE), transmission and photoconductivity (PC) measurements procedure and experimental apparatus were described earlier [9]. The PC measurements were taken using modulated beam light (modulation frequency equal to 11 Hz) in the constant collecting electric field.…”

“…In the cathodoluminescence (CL) measurements the employed electron beam energy was 10 keV. Using the calibrated dependence of the lattice constant versus chemical composition presented in paper [6], the iron concentrations x were determined.Reviews of the E0 maxima energy positions obtained from the RE measurements and Epc PC signal as a function of iron concentration x at 300 K (RT) and …”

“…In the cathodoluminescence (CL) measurements the employed electron beam energy was 10 keV. Using the calibrated dependence of the lattice constant versus chemical composition presented in paper [6], the iron concentrations x were determined.…”

“…The optical properties of this compound have been studied using absorption [3,4], reflectivity [5,6], and photo-EPR measurements [7]. On the basis of the results of these measurements there has been recognized a state of iron, identified as the so-called deep donor and its ionization energy related to the transition Fe2+(d6 ) → Fe3+(d5 ) has been calculated to be 1.45 eV with respect to the bottom of the conduction band minimum (CBM).…”