Abstract
This chapter presents some experiments on single crystal phosphors, such as zinc sulphide (ZnS) and cadmium sulphide (CdS). It discusses the methods used for the growth of single crystals. Hydrothermal process—has been attempted on various occasions for the growth of single crystals, but as far as is known, has not yet been successful on any appreciable scale. The hydrothermal method has already been used with success for the synthesis of two-component II-VI Mixed ZnS-HgS, CdS-HgS and ZnS-CdS have been made in this way, though not yet in single crystal form compounds. The chapter reviews the growth of ZnS and the structural characteristics of these crystals. It also discusses the growth and structure of CdS crystals and their activation. The chapter highlights the contact properties and space charge effects of ZnS and CdS. It also presents some observations on single crystals in which the emission intensity was highly anisotropic, even though the light pattern itself was independent of field direction. The chapter describes electroluminescence effects and mechanisms of electroluminescence in ZnS crystals and electroluminescence in single crystals of CdS. A few observations are reported of electroluminescence in CdS taking place at field strengths.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
