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: Nanometre-scale optical property fluctuations in Cu2ZnSnS4 revealed by low temperature cathodoluminescence Open Access

Band tailing is a major contributing factor to the large open circuit voltage (Voc) deficit that is currently limiting Cu2ZnSnS4 (CZTS) photovoltaic devices. It occurs in highly doped, highly compensated semiconductors and gives rise to a non-uniform electronic band structure. Here we report spatially resolved fluctuations in CZTS optical properties using low temperature cathodoluminescence (CL) in a scanning electron microscope (SEM). Principal component analysis reveals three CL peaks whose relative intensity vary across domains ~100 nm in size. It is not known whether the non-uniform optical properties are due to changes in composition or due to structural order-disorder at constant composition. Measurement of composition with energy dispersive X-ray (EDX) analysis in an SEM and ordering with Micro-Raman mapping revealed CZTS to be uniform within the spatial resolution (estimated at ~0.4 m and 1.1 μm respectively) and sensitivity of the two techniques. The CL results are consistent with the presence of band tailing in CZTS.

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
Use of low temperature cathodoluminescence in the SEM to detect optical property fluctuations in kesterite over ~100 nm size domains
Other description
Keyword
Subject
Location
Language
Cited in
Identifier
ark:/32150/r147429912z
doi:10.15128/r147429912z
Rights
All rights reserved All rights reserved
Publisher
Durham University
Date Created

File Details

Depositor
B.G. Mendis
Date Uploaded
Date Modified
24 August 2017, 15:08:06
Audit Status
Audits have not yet been run on this file.
Characterization
File format: zip (ZIP Format)
Mime type: application/zip
File size: 149914714
Last modified: 2017:05:25 12:18:53+01:00
Filename: Supporting Data Nanometre scale optical property fluctuations BGM 2017.zip
Original checksum: cce78d38b9d073e715d4a15f24b4fed3
Activity of users you follow
User Activity Date