Manufacturing, processing, testing of materials and structures
Comprehensive study of the conditions for obtaining hydrogenated amorphous erbium- and oxygen-doped silicon suboxide films, $a$-SiO$_x$:H$\langle$Er,O$\rangle$, by dc-magnetron deposition
Abstract:
The results of a comprehensive study of the conditions for growing $a$-SiO$_x$:H$\langle$Er,O$\rangle$ films are presented. The effect of the composition of various erbium-containing targets ($a$-SiO$_x$:H$\langle$Er,O$\rangle$, ErO$_x$, Er$_2$SiO$_5$, Er$_2$O$_3$, and Er), substrate temperature, and annealing temperatures in argon, air, and under conditions of SiH$_4$+Ar+O$_2$ plasma glow is studied. In order to obtain $a$-SiO$_x$:H$\langle$Er,O$\rangle$ films with the highest photoluminescence intensity of erbium ions, it is recommended for the following technological conditions to be used: the substrate holder should be insulated from dc-magnetron electrodes and the working gas mixture should include silane, argon, and oxygen. Single-crystal silicon and metal erbium should be used as targets. The erbium target should be placed only in the Si-target erosion zone.