| Revue: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000388868 |
| ISSN: | 0035-001X |
| Autores: | Gutiérrez, R1 Portillo, O1 Chávez, M2 Juárez, H2 Pacio, M2 Chaltel, L1 Zamora, M1 Lazcano, M1 Rubio, E3 Hernández, G1 |
| Instituciones: | 1Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Puebla. México 2Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Puebla. México 3Benemérita Universidad Autónoma de Puebla, Centro Universitario de Vinculación y Transferencia Tecnológica, Puebla. México |
| Año: | 2015 |
| Periodo: | Jul-Ago |
| Volumen: | 61 |
| Número: | 4 |
| Paginación: | 312-322 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | The goal of this work is to study the effects of doping on structural, morphological and optical properties of CdS thin films as a function of Pb2+ concentration. Thus, nanoparticles were synthesized by chemical bath and a thickness decrease of ~575-200 nm range was observed. In Fourier-transform infrared spectroscopy, all the samples showed a sharp stretching mode observed at ~1384 cm-1 corresponding to the vibration mode of CO3-2. X-ray diffraction studies show that the size of crystallites is in the ~33-12 nm range. The peaks belonging to primary phase are identified at the 2θ = 26.5° and 2θ = 26.00°, corresponding to CdS and PbS respectively. Thus, a shift in maximum intensity peak from 2θ = 26.4° to 28.2° is observed. Likewise peaks at 2θ = 13.57°, 15.91° correspond to lead perchlorate thiourea. The optical, absorption, and transmission properties of the films were determined by UV-vis spectrophotometry, optical energy gap was found to range from 2.1 to 2.4 eV. Raman spectroscopy on doped films showed a shifting of these modes that can be attributed to strain, stress effects, defects, phonon confinement, and variation in phonon relaxation with grain size |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Electromagnetismo, Física de materia condensada, Optica, Baño químico, Nanocristales, Nanopartículas, Dopaje |
| Keyword: | Physics and astronomy, Condensed matter physics, Electromagnetism, Optics, Chemical bath, Nanocrystals, Nanoparticles, Doping |
| Texte intégral: | Texto completo (Ver PDF) |
