Koç, Fatih.Sahin, Mehmet.2020-03-262020-03-262019Koç, 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), 1-9.0947-83961432-0630https://dx.doi.org/10.1007/s00339-019-3000-3https://hdl.handle.net/20.500.12395/38284It 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.en10.1007/s00339-019-3000-3info:eu-repo/semantics/openAccessCdSe/CdTemulti-shell type-II quantum dot nanocrystalsexcitonbiexcitonArticle12510Q2WOS:000486483200002Q3