The electronic and optical properties of an exciton, biexciton and charged excitons in CdSe/CdTe-based multi-shell type-II quantum dot nanocrystals
Yükleniyor...
Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SPRINGER HEIDELBERG
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
It has been recently reported that multi-shell type-II quantum dot nanocrystals (QDNCs) have higher quantum yields. Besides these higher quantum yields of multi-shell type-II QDNCs, additional second layer has been a critical influence on the formation mechanisms of the excitonic structures. Understanding of bound and unbound cases of the excitonic structures in multi-shell type-II QDNCs gives some important information for applications. In this study, we have investigated the electronic and optical properties of a single exciton (X), biexciton (XX), and positively and negatively charged excitons (X+ and X-) in CdSe/CdTe-based multi-shell type-II QDNCs. In the study, three different structure compositions, i.e., CdSe/ CdTe, CdSe/CdTe/CdS, and CdSe/CdTe/ZnTe, have been considered. We have observed that CdS and ZnTe materials have drastically changed the electronic and optical properties of the bare CdSe/CdTe type-II QDNCs.
Açıklama
Anahtar Kelimeler
CdSe/CdTe, multi-shell type-II quantum dot nanocrystals, exciton, biexciton
Kaynak
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
125
Sayı
10
Künye
Koç, F., Sahin, M. (2019). The Electronic and Optical Properties of an Exciton, Biexciton and Charged Excitons in Cdse/Cdte-Based Multi-Shell Type-II Quantum Dot Nanocrystals. Applied Physics A, 125(10), 1-9.
