Next Article in Journal
Nonlinear Integral Type Observer Design for State Estimation and Unknown Input Reconstruction
Next Article in Special Issue
Nonlinear Silicon Photonic Signal Processing Devices for Future Optical Networks
Previous Article in Journal
Arbuscular Mycorrhizal Fungi Regulate the Growth and Phyto-Active Compound of Salvia miltiorrhiza Seedlings
Previous Article in Special Issue
Numerical Simulation of Multi-Crystalline Silicon Crystal Growth Using a Macro–Micro Coupled Method during the Directional Solidification Process
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(1), 72;

Luminescent Properties of Silicon Nanocrystals:Spin on Glass Hybrid Materials

Departamento de Electronica, Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Tonantzintla, 72840 Cholula, Puebla, Mexico
Instituto Politécnico Nacional, CNMN, Avenida Luis Enrique Erro S/N, Zacatenco, Delegación Gustavo Adolfo Madero, C.P. 07738 Ciudad de México, Mexico
Centro de Investigación en Materiales Avanzados SC, Unidad Monterrey-PIIT, 66628 Apodaca, Nuevo León, Mexico
Authors to whom correspondence should be addressed.
Academic Editor: Paolo Minzioni
Received: 15 October 2016 / Revised: 5 December 2016 / Accepted: 8 December 2016 / Published: 13 January 2017
(This article belongs to the Special Issue Silicon Photonics Components and Applications)
Full-Text   |   PDF [3301 KB, uploaded 13 January 2017]   |  


The photoluminescence characteristics of films consisting of Si nanocrystals either coated with or embedded into Spin on Glass (SOG) were studied. Si nanocrystals showing red or blue luminescence when suspended in alcohol solution were obtained from porous silicon films. These were then either deposited in Si substrates and coated with SOG, or mixed in an SOG solution that was later spun on Si substrates. Both types of films were thermally annealed at 1100 °C for three hours in N2 atmosphere. Transmission electron microscopy measurements showed a mean diameter of 2.5 nm for the Si nanocrystals, as well as the presence of polycrystalline Si nanoagglomerates. These results were confirmed by X-ray diffraction studies, which revealed the (111), (220) and (311) Bragg peaks in Si nanocrystals. Fourier transform infrared spectroscopy studies showed that the coated films present higher chemical reactivity, promoting the formation of non-stoichiometric SiO2, while the embedded films behave as a stoichiometric SiO2 after the thermal annealing. The PL (photoluminescence) characterization showed that both embedded and coated films present emission dominated by the Quantum Confinement Effect before undergoing any thermal treatment. After annealing, the spectra were found to be modified only in the case of the coated films, due to the formation of defects in the nanocrystals/SiO2 interface. View Full-Text
Keywords: Si-NCs (silicon nanocrystals); SOG; HRTEM (high resolution transmission electron microscopy); XRD (X-ray diffraction); FTIR (Fourier transform infrared spectroscopy); PL Si-NCs (silicon nanocrystals); SOG; HRTEM (high resolution transmission electron microscopy); XRD (X-ray diffraction); FTIR (Fourier transform infrared spectroscopy); PL

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Vásquez-Agustín, M.A.; Cortazar-Martínez, O.; González-Fernández, A.A.; Andraca-Adame, J.A.; Morales-Sánchez, A.; Aceves-Mijares, M. Luminescent Properties of Silicon Nanocrystals:Spin on Glass Hybrid Materials. Appl. Sci. 2017, 7, 72.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top