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Defect chemistry and characterization of hg(1-x)cd(x)te
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vydyanath, H. R. |
| Copyright Year | 1981 |
| Description | Undoped mercury cadmium telluride crystals were subjected to high temperature equilibration at temperatures ranging from 400 C to 655 C in various Hg atmospheres. Hall effect and mobility measurements were carried out on the crystals quenched to room temperature subsequent to the high temperature equilibration. The variation of the hole concentration in the cooled crystals at 77 K as a function of the partial pressure of Hg at the equlibration temperatures, together with a comparison of the hole mobility in the undoped samples with that in the copper and phosphorous doped samples yielded a defect model for the undoped crystals, according to which, the undoped crystals are essentially intrinsic at the equilibration temperatures and the native acceptor defects are doubly ionized. Native donor defects appear to be negligible in concentration, implying that the p to n conversion in these alloys is mainly due to residual foreign donor impurities. The thermodynamic constants for the intrinsic excitation process as well as for the incorporation of the doubly ionized native acceptor defects in the undoped crystals were obtained. |
| File Size | 5202003 |
| Page Count | 106 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810015389 |
| Archival Resource Key | ark:/13960/t09w58g01 |
| Language | English |
| Publisher Date | 1981-01-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Quenching Cooling Crystal Defects Carrier Density Solid State Hole Distribution Electronics Hall Effect Lattice Parameters Mercury Cadmium Tellurides Doped Crystals Partial Pressure Impurities Space Commercialization Electron Mobility Copper Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
