| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000397535 |
| ISSN: | 0035-001X |
| Authors: | Chávez, M1 Juárez, H1 Pacio, Mauricio1 Mathew, X2 Gutiérrez, R3 Chaltel, L3 Zamora, M3 Portillo, O3 |
| Institutions: | 1Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Puebla. México 2Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Puebla. México 3Universidad Nacional Autónoma de México, Instituto de Energías Renovables, Temixco, Morelos. México |
| Year: | 2016 |
| Season: | Mar-Abr |
| Volumen: | 62 |
| Number: | 2 |
| Pages: | 124-128 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| English abstract | PbS-doped CdS nanomaterials were successfully synthetized using chemical bath. Transmittance measurements were used to estimate the optical band gap energy. Tailing in the band gap was observed and found to obey Urbach rule. The diffraction X-ray (XRD) show that the size of cristallites is in the ~33 nm to 12 nm range. The peaks belonging to primary phase are identified at 20 = 26.5° and 20 = 26.00° corresponding to CdS and PbS respectively. Thus, a shift in maximum intensity peak from 20 = 26.4° to 28.2° is clear indication of possible transformation of cubic to hexagonal phase. Also peaks at 20 = 13.57°, 15.9° correspond to lead perchlorate thiourea. The effects on films thickness and substrate doping on the band gap energy and the width on tail were investigated. Increasing doping give rise to a shift in optical absorption edge ~0.4 eV |
| Disciplines: | Física y astronomía, Ingeniería |
| Keyword: | Física, Ingeniería de materiales, Sulfuro de cadmio, Películas delgadas, Celdas solares, Espacio de banda óptica, Cola de Urbach |
| Keyword: | Physics and astronomy, Engineering, Physics, Materials engineering, Cadmium sulfide, Thin films, Solar cells, Optical band gap, Urbach tail |
| Full text: | Texto completo (Ver PDF) |
