IMPROVED II-VI CRYSTALS.
Abstract
Emphasis was placed on the construction of equipment needed for improving and evaluating the quality of CdS and related crystals. A procedure for cleaning fused-quartz tubes used for purification and crystal growth has been developed, which, along with better purification methods, promises to result in improvement in crystal quality. A vacuum apparatus has been assembled for studying the outgassing characteristics of CdS powders during sintering. By proper use of liquid nitrogen traps, pressures below 0.000005 torr were achieved with a small mechanical pump rated at 0.0001 torr ultimate pressure. A new furnace for continuing work on seed growth has been built and a moderately-successful run has been completed. Although considerable reliance is still placed on microscopic observations and electrical measurements for judging crystal quality, measurements of photoconductivity, thermally-stimulated currents, and acoustic phenomena will be emphasized now that the necessary equipment has been completed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 04, 1965
- Accession Number
- AD0667576
Entities
People
- J. M. Jost
- L. R. Shiozawa