| Yazarlar (3) |
Dr. Öğr. Üyesi Fatih KOÇ
Iğdır Üniversitesi, Türkiye |
Koray Köksal
Bitlis Eren Üniversitesi, Türkiye |
|
Mehmet Sahin
|
| Özet |
| In this study, we have investigated the effect of the buffer layers on the electronic and optical properties of an exciton (X) and a biexciton (XX) in a type-II CdTe/CdSe quantum dot nanocrystal. In an experimental study, it has been reported that when a CdTe/CdSe quantum dot nanocrystal is coated by a ZnTe material as a buffer layer, the photoluminescence quantum yield is growing from 4 to 20%. We have confirmed theoretically this improvement and extended the calculations to an XX structure. In the calculations, two different semiconductor materials, CdS and ZnTe, have been considered for the buffer layer. We have theoretically shown that the buffer layer causes an increase in the radiative oscillator strength of both X and XX. When the ZnTe is used as the buffer layer, the oscillator strength becomes stronger when compared to CdSe buffer material because of higher conduction band offset between CdSe and ZnTe. |
| Anahtar Kelimeler |
| multi-exciton in nanocrystals | Quantum dot | type-II nanocrystals |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Philosophical Magazine |
| Dergi ISSN | 1478-6435 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q3 |
| Makale Dili | İngilizce |
| Basım Tarihi | 01-2017 |
| Cilt No | 97 |
| Sayı | 3 |
| Sayfalar | 201 / 211 |
| Doi Numarası | 10.1080/14786435.2016.1252861 |
| Makale Linki | https://www.tandfonline.com/doi/full/10.1080/14786435.2016.1252861 |
| Atıf Sayıları | |
| WoS | 2 |
| SCOPUS | 3 |
| Google Scholar | 4 |
