"Purification Effects" in Zinc Selenide Crystals Doped With Ytterbium From Vapor Phase

Prospects for the use of ZnSe <Te> crystals in hyperspectral optical systems

“…Thus, in the article [7], it is convincingly shown that the introduction of REE into crystals or epitaxial films of III-V compounds in the process of their growth leads to an effective cleaning of them from background impurities, and the phenomenon is called the "purification" effect. We also observed a similar effect after doping of ZnSe crystals with ytterbium impurity Yb from the vapor phase in a closed volume [8]. The advantage over the method used in [7] is the possibility of its use for already grown crystals or layers and containing various impurities.…”

Edge luminescence of zinc selenide crystals with impurities of rare-earth elements

“…Meanwhile, in a number of works [5,6], it was convincingly shown that doping ZnSe crystals during their growth with ytterbium Yb, one of the representatives of REE, causes a decrease in the concentration of background donor impurities and an increase in the efficiency of exciton radiation. Later, similar effects were also observed in melt ZnSe crystals after the introduction of Yb impurity from the vapor phase into them [7]. In this work, we study the effect of a series of REEs (Ce, Gd, Yb) on the formation of the edge luminescence band of pure melt crystals and its temperature evolution.…”

Люминесценция кристаллов ZnSe&lt;Al&gt; : Yb при 4.2 K

“…В данной работе впервые при 4.2 K исследованы спектры люминесценции образцов ZnSe Al : Yb, полученных диффузией иттербия из паровой фазы в монокристаллические подложки ZnSe Al . Процесс осуществлялся при 1400 K в вакуумированных и запаянных кварцевых ампулах в условиях избыточного давления Se, способствующего вхождению Yb в подрешетку цинка [7]. Базовые подложки ZnSe Al размером 4 × 4 × 1 мм вырезались из объемного кристалла, выращенного методом Бриджмена из расплава и легированного в процессе роста алюминием.…”