Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO Crystal.

Special techniques for deep purification of ZnO and WO have been developed in this work. A ZnWO single crystal has been grown by the Czochralski method using purified ZnO and WO chemicals, along with the ZnWO crystal-etalon, which has been grown at the same conditions using commercially available 5N ZnO and WO chemicals. The actual accidental impurities compositions of both the initial chemicals and the grown crystals have been measured by inductively coupled plasma mass-spectrometry.