Synthesis and characterization of PbS quantum dots embedded in oxide glass
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| Autore principale: | |
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| Data di pubblicazione: | 2006 |
| Altri autori: | , , |
| Natura: | Article |
| Lingua: | eng |
| Fonte: | Repositório Institucional da UnB |
| Download full: | http://repositorio.unb.br/handle/10482/6173 https://dx.doi.org/10.1590/S0103-97332006000300043 |
Riassunto: | The fusion method was used to produce PbS quantum dots (QDs) embedded in S-doped glass matrix (SiO2- Na2CO3-Al2O3-PbO2-B2O3:S). Measurements of optical absorption (OA), photoluminescence (PL) and atomic force microscopy (AFM) have been carried out in order to characterize the produced QDs. A strong red-shift observed in the optical features with an increase of the annealing time indicates an increase in QD-size. The QD sizes predicted by k.p theoretical results were confirmed by AFM observation. |