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http://cio.repositorioinstitucional.mx/jspui/handle/1002/432| SYNTHESIS AND CHARACTERIZATION OF ZNO AND YAG:CE3+, PR3+ NANOPHOSPHORS FOR WHITE LIGHT GENERATION BY PHOTOLUMINESCENCE AND ELECTROLUMINESCENCE | |
| JORGE OLIVA UC | |
| ELDER DE LA ROSA Luis Armando Diaz-Torres | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| NANOPARTICLES, PHOTOLUMINESCENCE, ELECTROLUMINESCENCE, LIGHT EMITTING DIODES, HYBRID LEDS | |
| "In this dissertation two materials Zinc Oxide (ZnO) and Yttrium aluminum garnet doped with rare earths (YAG:Ce3+, Pr3+) were studied to efficiently emit blue, yellow or white light. The route of chemical synthesis permitted us to choose the type of defect associated to certain color of emission in ZnO and YAG nanophosphors, while the work of engineering employed using such materials, allowed us to fabricate electroluminescent devices for applications in illumination. In the case of ZnO, the type of defects was tailored by using Triethanolamine (TEA) or dodecylamine (DCA) as surfactants. ZnO nanoparticles with an average size of 5nm, emitted blue light and yellow light centered at 429 nm and 580 nm when they were synthesized with TEA and dispersed in hexane. By using DCA as surfactant, the ratio between the blue and yellow emission bands in ZnO was controlled, that in turn, permitted us to tune the photoluminescence from cool to warm white light. In addition, ZnO based LEDs using ZnO nanoparticles synthesized with DCA were fabricated, and white light electroluminescence with coordinates of (0.31, 0.33) according to the international commission on illumination (CIE) was obtained. The turn on voltage for those devices was 4V and the maximum current consumption for the LEDs was 2.32 mA at 10V." | |
| 2014-01 | |
| Tesis de doctorado | |
| Inglés | |
| León, Guanajuato | |
| Público en general | |
| Oliva Uc, (2014). "Synthesis and characterization of ZnO and YAG:Ce3+,Pr3+ nanophosphors for white light generation by photoluminescence and electroluminescence". Tesis de Doctorado en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 97 pp. | |
| ÓPTICA | |
| Aparece en las colecciones: | DOCTORADO EN CIENCIAS (ÓPTICA) |
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