Structural and optical properties of doped silicon nanocrystals: first-principles calculation

Guangsheng Fu; Huixia Gao; Wanbing Lu; Wenge Ding; Wei Yu

doi:10.1117/12.758151

4 January 2008 Structural and optical properties of doped silicon nanocrystals: first-principles calculation

Guangsheng Fu, Huixia Gao, Wanbing Lu, Wenge Ding, Wei Yu

Proceedings Volume 6831, Nanophotonics, Nanostructure, and Nanometrology II; 68311E (2008) https://doi.org/10.1117/12.758151
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Structural and optical properties of the B doped, P doped and B-P codoped silicon nanocrystals have been investigated using first-principles calculations. It was found that the codoped system tends to reduce structure distortion around B/P impurities compared with B/P single doped systems and shows a decreased energy band gap compared with undoped system due to there being electronic compensating effect. In addition, the spatial behaviors of density of states indicated that codoping possesses a tendency of confining the electrons and holes around the B/P impurities, which suggests the possibility of increasing electron emission transition rates between donor and acceptor. Moreover, the dielectric functions calculation demonstrated that the optical absorption of codoped silicon nanocrystals have the characteristic of the energy band gap being redshifted with respect to the undoped case together with peak appearing at lower energy side.

Citation Download Citation

Guangsheng Fu, Huixia Gao, Wanbing Lu, Wenge Ding, and Wei Yu "Structural and optical properties of doped silicon nanocrystals: first-principles calculation", Proc. SPIE 6831, Nanophotonics, Nanostructure, and Nanometrology II, 68311E (4 January 2008); https://doi.org/10.1117/12.758151

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available