Issue 68, 2015
From the journal:

RSC Advances

Accurate determination of the size distribution of Si nanocrystals from PL spectra

Xuguang Jia,*a   Pengfei Zhang,*a   Ziyun Lin,a   Rebecca Anthony,†b   Uwe Kortshagen,b   Shujuan Huang,a   Binesh Puthen-Veettil,a   Gavin Conibeera  and  Ivan Perez-Wurfla  

* Corresponding authors

a School, of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
E-mail: x.jia@outlook.com, larrymd.zhang@gmail.com

b Mechanical Engineering Department, University of Minnesota, 111 Church Street SE, USA

Abstract

Narrow size distribution of quantum dots (QDs) is needed for their application in photovoltaics but collection of such information is difficult. Many experiments have shown the photoluminescence (PL) spectrum of Si QDs will broaden and peak position is size dependent. However, there is still lack of quantitative analysis of such phenomenon. In this paper, a model is developed to fit the PL spectrum based on spontaneous emission and the size distribution of the QDs. With this model, we can quantitatively analyse the QD size and its distribution using the PL spectra only, saving the need of time consuming and destructive characterization methods such as transmission electron microscopy (TEM). The optical bandgap can be extracted naturally from this PL model. The size and distribution of the QD which are obtained by fitting the PL spectra are then confirmed by measurements using TEM and XRD.

Graphical abstract: Accurate determination of the size distribution of Si nanocrystals from PL spectra

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C5RA02805A
Article type
Paper
Submitted
13 Feb 2015
Accepted
16 Jun 2015
First published
16 Jun 2015

RSC Adv., 2015,5, 55119-55125

Permissions

Request permissions

Accurate determination of the size distribution of Si nanocrystals from PL spectra

X. Jia, P. Zhang, Z. Lin, R. Anthony, U. Kortshagen, S. Huang, B. Puthen-Veettil, G. Conibeer and I. Perez-Wurfl, RSC Adv., 2015, 5, 55119 DOI: 10.1039/C5RA02805A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements