Using pulsed mode scanning electron microscopy for cathodoluminescence studies on hybrid perovskite films
Authors
Publication Date
2021-06-01Journal Title
Nano Express
ISSN
2632-959X
Publisher
IOP Publishing
Volume
2
Issue
2
Language
en
Type
Article
This Version
VoR
Metadata
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Ferrer Orri, J., Tennyson, B., Kusch, G., Divitini, G., Macpherson, S., Oliver, R., Ducati, C., & et al. (2021). Using pulsed mode scanning electron microscopy for cathodoluminescence studies on hybrid perovskite films. Nano Express, 2 (2) https://doi.org/10.1088/2632-959X/abfe3c
Abstract
<jats:title>Abstract</jats:title>
<jats:p>The use of pulsed mode scanning electron microscopy cathodoluminescence (CL) for both hyperspectral mapping and time-resolved measurements is found to be useful for the study of hybrid perovskite films, a class of ionic semiconductors that have been shown to be beam sensitive. A range of acquisition parameters is analysed, including beam current and beam mode (either continuous or pulsed operation), and their effect on the CL emission is discussed. Under optimized acquisition conditions, using a pulsed electron beam, the heterogeneity of the emission properties of hybrid perovskite films can be resolved via the acquisition of CL hyperspectral maps. These optimized parameters also enable the acquisition of time-resolved CL of polycrystalline films, showing significantly shorter lived charge carriers dynamics compared to the photoluminescence analogue, hinting at additional electron beam-specimen interactions to be further investigated. This work represents a promising step to investigate hybrid perovskite semiconductors at the nanoscale with CL.</jats:p>
Keywords
Paper, Focus on Cathodoluminescence and Electron Beam Induced Current of Semiconductor Nanostructures, hybrid perovskite, cathodoluminescence, pulsed mode, beam damage, hyperspectral mapping
Sponsorship
J.F.O and C.D. acknowledge funding from the Engineering and Physical Sciences Research Council (EPSRC) Nano Doctoral Training Centre (EP/L015978/1). J.FO. and S.D.S. acknowledge the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (HYPERION, grant agreement no. 756962). E.M.T. thanks the ERC Horizon 2020 research and innovation programme (Marie Skłodowska-Curie, grant agreement no. 841265). S.D.S. and E.M.T. acknowledge funding from the EPSRC (EP/R023980/1), from the EPSRC Centre for Advanced Materials for Integrated Energy Systems (CAM-IES, EP/P007767/1), and the Cambridge Royce facilities grant (EP/P024947/1). CL studies were supported by the EPSRC (EP/R025193/1). Dr. Christian Monachon from Attolight is thanked for his ongoing support of the CL system. Yu-Hsien Chiang from the Stranks group is thanked for his support in the sample preparation.
Funder references
Engineering and Physical Sciences Research Council (EP/L015978/1)
Engineering and Physical Sciences Research Council (EP/P007767/1)
European Research Council (756962)
Engineering and Physical Sciences Research Council (EP/R023980/1)
Engineering and Physical Sciences Research Council (EP/R025193/1)
Engineering and Physical Sciences Research Council (EP/P024947/1)
Royal Society (UF150033)
Identifiers
nanoxabfe3c, abfe3c, nanox-100444.r1
External DOI: https://doi.org/10.1088/2632-959X/abfe3c
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333059
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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