The University of Southampton
University of Southampton Institutional Repository

Annealing of amorphous silicon using c.w. visible lasers

Annealing of amorphous silicon using c.w. visible lasers
Annealing of amorphous silicon using c.w. visible lasers
The strong absorption of c.w. laser radiation in the green/blue spectral region has been used to thermally anneal and locally crystalize small volumes of amorphous silicon (a-Si) which has been thermally insulated from the environment. We will present experimental results for two distinct cases where this method has been used for producing high quality c-Si and secondly for allowing additional optoelectronic functionality to be built into the material. 
More specifically we will discuss laser annealing results obtained in cylindrical and planar geometries; in a-Si core optical fibers and in a-Si thin films deposited on fused silica slabs and on the polar faces of LiNbO3 single crystals. In both geometries crystallization of a-Si has been achieved, in some cases producing crystallites with enormous aspect ratios. In the case of a-Si core fibers we have not only achieved a significant improvement of the optical quality of the silicon material, but also observed some tuneability of its optoelectronics properties. LiNbO3 on the other hand is one of the cornerstone platforms of nonlinear/integrated optics. By transferring the materials processing advances made in our silicon fibers to LiNbO3, we can envisage a platform that exploits the superior optical and electronic properties of both materials for the development of high performance optoelectronic devices. Our preliminary results are very encouraging and we believe that this combination promises many exciting future applications.
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Martinez, G.
6f3b34dd-33de-42b0-a69d-56e724da239b
Zisis, G.
45a0bf08-5ab7-4d9b-9ad9-65ca7bf739a9
Franz, Y.
edb6208c-9f65-42c4-965e-b6bc54945602
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Martinez, G.
6f3b34dd-33de-42b0-a69d-56e724da239b
Zisis, G.
45a0bf08-5ab7-4d9b-9ad9-65ca7bf739a9
Franz, Y.
edb6208c-9f65-42c4-965e-b6bc54945602
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Mailis, S., Martinez, G., Zisis, G., Franz, Y., Healy, N. and Peacock, A.C. (2014) Annealing of amorphous silicon using c.w. visible lasers. E-MRS '14 Materials Research Society Spring Meeting, Lillers, France. 26 - 30 May 2014.

Record type: Conference or Workshop Item (Other)

Abstract

The strong absorption of c.w. laser radiation in the green/blue spectral region has been used to thermally anneal and locally crystalize small volumes of amorphous silicon (a-Si) which has been thermally insulated from the environment. We will present experimental results for two distinct cases where this method has been used for producing high quality c-Si and secondly for allowing additional optoelectronic functionality to be built into the material. 
More specifically we will discuss laser annealing results obtained in cylindrical and planar geometries; in a-Si core optical fibers and in a-Si thin films deposited on fused silica slabs and on the polar faces of LiNbO3 single crystals. In both geometries crystallization of a-Si has been achieved, in some cases producing crystallites with enormous aspect ratios. In the case of a-Si core fibers we have not only achieved a significant improvement of the optical quality of the silicon material, but also observed some tuneability of its optoelectronics properties. LiNbO3 on the other hand is one of the cornerstone platforms of nonlinear/integrated optics. By transferring the materials processing advances made in our silicon fibers to LiNbO3, we can envisage a platform that exploits the superior optical and electronic properties of both materials for the development of high performance optoelectronic devices. Our preliminary results are very encouraging and we believe that this combination promises many exciting future applications.

Full text not available from this repository.

More information

e-pub ahead of print date: May 2014
Venue - Dates: E-MRS '14 Materials Research Society Spring Meeting, Lillers, France, 2014-05-26 - 2014-05-30
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 368753
URI: https://eprints.soton.ac.uk/id/eprint/368753
PURE UUID: 27330b4c-aaa6-4a7e-876c-54f3db4abdbf
ORCID for S. Mailis: ORCID iD orcid.org/0000-0001-8100-2670
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

Catalogue record

Date deposited: 18 Sep 2014 11:08
Last modified: 02 Mar 2019 01:35

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×