Si QDots Where Does Photoluminescence Come From

Si QDots Where Does Photoluminescence Come From  

Xuejun Duan, Javier Calvo-Fuentes, and M. Arturo Lopez-Quintela 

Silicon nanoparticles (Si NPs) with sizes in the order of bulk exciton Bohr radius [1, 2] present interesting optical properties for fluorescent labeling in biological imaging applications with their potential nontoxicity [3-6], However, the origin of their photoluminescence has been subjected to intense debate for almost two decades. This debate has been focused on whether quantum onfinement effects or atomic-scale defects at the surface of the nanocrystals are responsible for the light emission [7]. 

Self-Organized Surfactant Structures. Edited by Tharwat F. Tadros 2010 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim ISBN 978-3-527-31990-9 

---

I 6 Si QDots Where Does Photoluminescence Come From ... 

---