Emission spectra of iron doped ZnSxSe1-x solid solutions |
| |
Authors: | H Nelkowski O Pfützenreuter W Schrittenlacher |
| |
Institution: | Institut für Festkörperphysik der Technischen Universität, Berlin, Fed. Rep. Germany |
| |
Abstract: | The photoluminescence of ZnSxSe1?x:Fe has been investigated in the visible and near infrared (λ ? 1.2 μm) region. The doping dependence shows, that the incorporation of iron in ZnS produces, in addition to the well-known red luminescence (λmax = 660 nm), another emission band at 980 nm, which was hitherto unknown for ZnS: Fe. The energetic position of this new band is proved to be independent of composition of the ZnSxSe1?x solid solution. Therefore, it is interpreted as an internal transition in iron centres. On the other hand, the red Fe-band shifts to lower energy with increasing selenium concentration. This result shows clearly, that the red Fe-band of zincsulfide cannot be interpreted by an internal transition in iron centres 3], but favors the donor-acceptor model, which was already suggested by other authors 4]. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|