Loading...
Please wait, while we are loading the content...
Similar Documents
Fabrication and properties of gallium phosphide variable colour displays
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Webb, W. A. Macgregor, G. M. Macdonald, R. A. Effer, D. Kennedy, D. I. |
| Copyright Year | 1973 |
| Description | The unique properties of single-junction gallium phosphide devices incorporating both red and green radiative recombination centers were investigated in application to the fabrication of monolithic 5 x 7 displays capable of displaying symbolic and alphanumeric information in a multicolor format. A number of potentially suitable material preparation techniques were evaluated in terms of both material properties and device performance. Optimum results were obtained for double liquid-phase-epitaxial process in which an open-tube dipping technique was used for n-layer growth and a sealed tipping procedure for subsequent p-layer growth. It was demonstrated that to prepare devices exhibiting a satisfactory range of dominant wavelengths which can be perceived as distinct emission colors extending from the red through green region of the visible spectrum involves a compromise between the material properties necessary for efficient red emission and those considered optimum for efficient green emission. |
| File Size | 2697661 |
| Page Count | 57 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740004321 |
| Archival Resource Key | ark:/13960/t1fj77b6j |
| Language | English |
| Publisher Date | 1973-07-01 |
| Access Restriction | Open |
| Subject Keyword | Physics, Solid-state Gallium Phosphides Wavelengths Light Visible Radiation Emission Spectra Display Devices 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 |
