Changes in the photoluminescence spectrum near twin boundaries in ZnTe crystals produced by rapid crystallization

Injection and Optical Spectroscopy of Localized States in II-VI Semiconductor Films

“…These transitions were for the first time observed in [75][76][77][78][79] and authors had called them Yi-lines. They are ascribed to the distortions of the crystalline lattice of the material near incoherent twin boundaries, dislocations and other longitudinal defects where the dangling bonds are formed in the semiconductor material.…”

“…Table 7 summarizes these data. Optical transitions with energy (2.381÷2.383) eV were observed in [68,[75][76][77][78][79][80][81][82][84][85][86] where authors had studied monocrystalline or bulk polycrystalline ZnTe of high structural and optical quality. These transitions are commonly relating to a free exciton (X).…”

“…The set of nearest lines in the energy range Е = (2.30÷2.33) eV and Е = (2.17÷2.25) eV authors [76][77][78][79] ascribe to the electron transitions from the conductance band to the shallow acceptor levels formed by Li or Cu atoms and their phonon repetitions (LO -25.5 meV). There are stripes 2SLi, 3SbLi, (e-A) Li, 2P Li, 4SbLi, 4SbLi-LO, 2SCu, 3SbCu, 4SbCu, 2Sb Cu -LO, 2Sb Cu -2LO and others.…”

“…Table 7. Analysis and interpretation of the PL peaks are carried out according to reference data [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89]. We calculated activation energies of corresponding processes using the expression (26).…”