Selenium-ion implantation was used to produce p-type layers on cadmium selenide single crystals. Their conductivity was found to be governed by acceptor-levels at Ev + 0.05eV and Ev + 0.32eV; due to native point defects in the ion-implanted layer.

Properties of CdSe Single Crystals Activated with Selenium by Ion Implantation. A.N.Georgobiani, B.N.Levonovich: Inorganic Materials, 2009, 45[6], 606