OPTICAL AND ELECTRICAL PROPERTIES OF DIAMOND.
Abstract
THERMOLUMINESCENCE OF SEMICONDUCTING AND INSULATING DIAMONDS: Glow curves showed peaks near 150 and 250 degrees K. Blue thermoluminescence could be excited by wavelengths up to 0.4 micron. Red -emitting glow peaks were found at 175 and 290 K that could be excited up to about 0.6 micron. DARK CURRENT AND PHOTOCONDUCTIVITY IN SEMICONDUCTING DIAMOND: Direction of rectification between 80 and 373 K indicated p-type conductivity. ELECTROLUMINESCENCE (EL) OF SEMICONDUCTING DIAMONDS: At low temperature the emission spectrum was mainly blue, the red becoming comparatively stronger at higher temperature. Plots of the log of the EL brightness vs 1/square root of V gave 2 straight lines differing in slope, with higher slope at higher voltages. EL was observed with voltages smaller than the 5.5-ev band gap. THEORETICAL INVESTIGATIONS (see also AD-621 037, AD-621 038): Kinetics of luminescence were investigated when electrons are excited to the conduction band before falling to a center and when transition is through a discrete excited state.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1965
- Accession Number
- AD0631044
Entities
People
- A. Halperin
Organizations
- Israel Atomic Energy Commission