Murphy, John D. (2015) Data for The effect of oxide precipitates on minority carrier lifetime in n-type silicon. [Dataset]

Microsoft Excel (Dataset) WRAP_Murphy_2015-11-24_Data.xlsx - Supplemental Material Download (105Kb)

Request Changes to record.

Abstract

Supersaturated levels of interstitial oxygen in Czochralski silicon can lead to the formation of oxide precipitates. Although beneficial from an internal gettering perspective, oxygen-related extended defects give rise to recombination which reduces minority carrier lifetime. The highest efficiency silicon solar cells are made from n-type substrates in which oxide precipitates can have a detrimental impact on cell efficiency. In order to quantify and to understand the mechanism of recombination in such materials, we correlate injection level-dependent minority carrier lifetime data measured with silicon nitride surface passivation with interstitial oxygen loss and precipitate concentration measurements in samples processed under substantially different conditions. We account for surface recombination, doping level, and precipitate morphology to present a generalised parameterisation of lifetime. The lifetime data are analysed in terms of recombination activity which is dependent on precipitate density or on the surface area of different morphologies of precipitates. Correlation of the lifetime data with interstitial oxygen loss data shows that the recombination activity is likely to be dependent on the precipitate surface area. We generalise our findings to estimate the impact of oxide precipitates with a given surface area on lifetime in both n-type and p-type silicon.

Item Type:	Dataset
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Science > Engineering
Type of Data:	Data used to plot the graphs in the associated paper
Library of Congress Subject Headings (LCSH):	Silicon, Oxides -- Research, Semiconductors -- Research
Publisher:	School of Engineering, University of Warwick
Official Date:	20 November 2015
Dates:	Date Event 24 November 2015 Completion 20 November 2015 Published
Status:	Peer Reviewed
Publication Status:	Published
Media of Output:	Microsoft Excel file
Access rights to Published version:	Open Access
Description:	Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID EP/J01768X/2 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266 EP/M024911/1 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266 UNSPECIFIED Royal Academy of Engineering http://dx.doi.org/10.13039/501100000287
Related URLs:	Author Related item in WRAP
Open Access Version:	Publisher
Contributors:	Contribution Name Contributor ID Author Al-Amin, M. UNSPECIFIED Author Bothe, K. UNSPECIFIED Author Olmo, M. UNSPECIFIED Author Voronkov, V. V. UNSPECIFIED Author Falster, R. J. UNSPECIFIED

Request changes or add full text files to a record

Repository staff actions (login required)

View Item

Downloads