Structure degradation and conductivity variation in the perovskite phase of yttrium-barium ceramics

Photoconductivity of gamma-irradiated Znse (Te)/ZnO:O and ZnSe(Te)/ZnO:O,Zn nanogeterojuctions

“…In Table 1 shows the calculations of the sizes of ZnO nanocrystallites ~ 40 nm in ZnSe(Te)/ZnO:O NHJ, which do not change after heat treatment in zinc vapor and gamma irradiation. In the ZnSe(Te)/ZnO:O,Zn NHJ, the amorphous ZnO phase was also observed in the form of a diffuse band [20]. The sizes were estimated as ~ 0.9 nm, which after gamma irradiation increased to 1.2 nm.…”

“…We previously studied the crystal structure of ZnSe(0.2%Te)/ZnO:O and ZnSe(0.2%Te)/ZnO:O,Zn before and after irradiation. The X-ray diffraction patterns contained the ZnO (110) nanocrystalline phase and the reflection of the matrix lattice of the ZnSe crystal (220) [20], which is consistent with the spectrum of the ZnSe powder (111), ( 220), (311), and (400) [8]. In Table 1 shows the calculations of the sizes of ZnO nanocrystallites ~ 40 nm in ZnSe(Te)/ZnO:O NHJ, which do not change after heat treatment in zinc vapor and gamma irradiation.…”

“…Research methods. A description of the method for studying X-ray diffraction patterns is given in [20]. Table I shows the structural characteristics: the reflections of the matrix lattice (ZnSe) and the sizes of the nanocrystalline (NC) and amorphous (ZnO) phases on the nanometer scale, estimated by the Selyakov-Scherrer formula.…”