Dr. Gabriele Bellocchi Profile

Dr. Gabriele Bellocchi

PhD at Univ of Catania

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 1 May 2014 Paper

New strategies to improve Eu light emission in SI-based matrices

G. Franzò, G. Bellocchi, S. Boninelli, M. Miritello, F. Iacona

Proceedings Volume 9133, 913307 (2014) https://doi.org/10.1117/12.2052151

KEYWORDS: Europium, Silica, Ions, Annealing, Oxygen, Silicon, Transmission electron microscopy, Matrices, Diffusion, Photonics

Read Abstract +

A promising approach to obtain light emission from Si-based materials is represented by doping with rare earths and in particular with Eu. In this paper the comparison of the performances of SiO₂ and SiOC layers as host matrices for optically active Eu ions is presented. A SiO₂ matrix allows to observe light emission from both Eu²⁺ and Eu³⁺ ions, owing to a proper tuning of the thermal annealing process used to optically activate the rare earth. However the photoluminescence efficiency of both ions remains relatively low and quite far from the requirements for technological applications, mainly due to the extensive formation of Eu-containing precipitates. A detailed study of the structural and optical properties of these layers allowed us to analyze and elucidate the clustering process and to find suitable strategies to minimize it. We found that the substitution of the SiO₂ matrix with a SiOC film allows to obtain a very bright light emission at about 440 nm from Eu²⁺ ions. In fact SiOC is able to efficiently promote the Eu reduction; furthermore, Eu ions are characterized by an enhanced mobility and solubility in this matrix and, as a consequence, Eu precipitation is strongly reduced. Finally, by taking advantage of the dependence of the photoluminescence peak position on the Eu concentration, an intense white emission is obtained at room temperature by combining two layers with different Eu contents. Since SiOC is a material fully compatible with standard Si technology, Eu-doped SiOC layers can be considered a highly interesting candidate for applications in photonics or in solid-state lighting.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years