Toggle Main Menu Toggle Search

ePrints

Optical luminescence from alkyl-passivated Si nanocrystals under vacuum ultraviolet excitation: Origin and temperature dependence of the blue and orange emissions

Lookup NU author(s): Dr Yimin Chao, Professor Andrew Houlton, Dr Ben Horrocks, Professor Jianhua Yang, Professor Lidija Siller

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

The origin and stability of luminescence are critical issues for Si nanocrystals which are intended for use as biological probes. The optical luminescence of alkyl-monolayer-passivated silicon nanocrystals was studied under excitation with vacuum ultraviolet photons (5.1-23 eV). Blue and orange emission bands were observed simultaneously, but the blue band only appeared at low temperatures (<175 K) and with high excitation energies (>8.7 eV). At 8 K, the peak wavelengths of the emission bands were 430±2 nm (blue) and 600±2 nm (orange). The orange and blue emissions originate from unoxidized and oxidized Si atoms, respectively. © 2006 American Institute of Physics.


Publication metadata

Author(s): Chao Y, Houlton A, Horrocks BR, Hunt MRC, Poolton NRJ, Yang J, Siller L

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 2006

Volume: 88

Issue: 26

ISSN (print): 0003-6951

ISSN (electronic): 1077-3118

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.2216911

DOI: 10.1063/1.2216911


Altmetrics

Altmetrics provided by Altmetric


Actions

    Link to this publication


Share