RESEARCH ON CDTE
Abstract
Optical and phase equilibria studies were continued and electron mobility measurements were initiated. Current measurements on free carrier absorption and reflection spectra will provide an optical determination of the electron effective mass. Reflectance measurements on pure crystals are being used to determine optical constants of CdTe between 4.0 and 7.4 ev at 25K. At 25K the 3.9 ev peak sharpens and structure appears in the 5.3 ev peak. CdTe phase equilibria studies have indicated that for every set of fixed component pressures there are 2 points in phase space where solid, liquid and vapor are in equilibrium. Two approaches to CdTe crystal growth were, therefore, indicated. At a fixed Cd pressure and within a given temperature range, it is possible to cool a liquid phase to obtain crystallization. Growth of CdTe crystals from a Cd rich solution under constant Cd pressure and increased melt temperature was also demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1962
- Accession Number
- AD0273623
Entities
People
- D.t.f. Marple
- M.r. Lorenz
- R.e. Halsted
Organizations
- General Electric