Skip to Content
No preview available

Actions

Download Analytics Citations

Export to: EndNote  |  Zotero  |  Mendeley

Collections

This file is not currently in any collections.

Supporting data: "The role of transition radiation in cathodoluminescence imaging and spectroscopy of thin-foils" Open Access

There is renewed interest in cathodoluminescence (CL) in the transmission electron microscope, since it can be combined with low energy loss spectroscopy measurements and can also be used to probe defects, such as grain boundaries and dislocations, at high spatial resolution. Transition radiation (TR), which is emitted when the incident electron crosses the vacuum-specimen interface, is however an important artefact that has received very little attention. The importance of TR is demonstrated on a wedge shaped CdTe specimen of varying thickness. For small specimen thicknesses (<250 nm) grain boundaries are not visible in the panchromatic CL image. Grain boundary contrast is produced by electron-hole recombination within the foil, and a large fraction of that light is lost to multiple-beam interference, so that thicker specimens are required before the grain boundary signal is above the TR background. This is undesirable for high spatial resolution. Furthermore, the CL spectrum contains additional features due to TR which are not part of the ‘bulk’ specimen. Strategies to minimise the effects of TR are also discussed.

Descriptions

Resource type
Dataset
Contributors
Creator: Mendis, Budhika 1
Contact person: Mendis, Budhika 1
1 Durham University, UK
Funder
Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword
transition radiation
cathodoluminescence
grain boundaries
Monte-Carlo simulations
Subject
Location
Language
Cited in
doi:10.1016/j.ultramic.2016.05.002
Identifier
doi:10.15128/5138jd84x
ark:/32150/5138jd84x
Rights
All rights reserved All rights reserved
Publisher
Durham University
Date Created

File Details

Depositor
B.G. Mendis
Date Uploaded
Date Modified
17 May 2016, 14:05:24
Audit Status
Audits have not yet been run on this file.
Characterization
File format: zip (ZIP Format)
Mime type: application/zip
File size: 8204375
Last modified: 2016:05:05 14:22:29+01:00
Filename: Meta Data.zip
Original checksum: 03e44bb6eefdd10052d7368ddf8ec3c9
Activity of users you follow
User Activity Date
User B.G. Mendis has added a new version of Supporting data: "The role of transition radiation in cathodoluminescence imaging and spectroscopy of thin-foils" almost 3 years ago
User B.G. Mendis has updated Supporting data: "The role of transition radiation..." almost 3 years ago
User B.G. Mendis has updated Supporting data: "The role of transition radiation..." almost 3 years ago
User B.G. Mendis has updated Supporting data: "The role of transition radiation..." almost 3 years ago
User B.G. Mendis has deposited Meta Data.zip almost 3 years ago