| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000388879 |
| ISSN: | 0035-001X |
| Authors: | Carmona Téllez, S1 Alarcón Flores, G2 Zaleta Alejandre, E3 Rivera Alvarez, Zulima C4 Meza Rocha, A.N4 Martínez Martínez, R5 Murrieta, H1 Aguilar Frutis, M2 Falcony, C4 |
| Institutions: | 1Universidad Nacional Autónoma de México, Instituto de Física, México, Distrito Federal. México 2Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, México, Distrito Federal. México 3Universidad Autónoma del Estado de Hidalgo, Escuela Superior, Apan, Hidalgo. México 4Instituto Politécnico Nacional, Centro de Investigación y de Estudios Avanzados, México, Distrito Federal. México 5Universidad Tecnológica de la Mixteca, Instituto de Física y Matemáticas, Oaxaca. México |
| Year: | 2015 |
| Season: | Sep-Oct |
| Volumen: | 61 |
| Number: | 5 |
| Pages: | 323-329 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| English abstract | Polystyrene (PS) films doped with blue, yellow and red organic pigments have been deposited on glass and on commercial LED chips by spray pyrolysis using recycled PS as precursor, at deposition rates between 100 and 200 Å/s. Doped films have roughness between 100 and 2500 Å depending on the kind of pigment used; the surface morphology shows that the organic pigments incorporate into the polystyrene host forming globular particles of about 2 μm in diameter. The organic pigments used have luminescent emissions peaked at 440, 509 and 590 nm. The introduction of the proper combination of pigments on the PS film deposited on the LED chips renders a white light emission with (0.29, 0.37) and (0.30, 0.33) CIE (Commission international de l' eclairage) color coordinates. It was determined that the exposure to violet light degrades the luminescent characteristics, however, blue light is not energetic enough to cause a degradation of the luminescent layer over similar period of time |
| Disciplines: | Física y astronomía, Ingeniería |
| Keyword: | Optica, Ingeniería de materiales, Atomización pirolítica, Películas poliméricas, Poliestireno, Emisiones de luz blanca |
| Keyword: | Physics and astronomy, Engineering, Optics, Materials engineering, Spray pyrolysis, Polymeric films, Polystyrene, White light emission |
| Full text: | Texto completo (Ver PDF) |
