<div class="csl-bib-body">
<div class="csl-entry">Yilmaz, U., Lendl, B., & Ramer, G. (2022, May 12). <i>Nanoscale characterization of organic-inorganic perovskites with AFM-IR</i> [Conference Presentation]. JunganalytikerInnenforum 2022, Tulln, Austria.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/152908
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dc.description.abstract
Organic-inorganic, hybrid perovskite technology is regarded as a contender for the next generation of lighting and light harvesting technologies. Perovskite LEDs (PeLEDs) and perovskite photovoltaics (PePV) are cheap, light, flexible, efficient and easy to process and manufacture. However, currently, perovskite devices suffer from rapid degradation through various failure modes (humidity, UV aging, heat,..). Pe technology offers several avenues to overcome these issues by adjusting the chemical composition (metal cation, halogen anion, organic cation, matrix components and stabilizers) of devices. Research into PeLED/PePV synthesis und fabrication has been going on for two decades. To understand these failure modes and the effects of changes to the composition on the device performance macroscale chemical characterization is insufficient. Instead, characterization at the nanoscale is required to understand and optimize PeLEDs/PePVs. In our current research we study novel perovskite materials by combining scanning probe microscopy to achieve nanoscale resolution with mid-IR spectroscopy for chemical identification (AFM-IR). The working principle is based on leveraging a local, short-lived photo-thermal expansion by absorption of infrared light - induced by a pulsed, tunable EC-QCL source. This excitation then is measured by the cantilever probe and the oscillation amplitude is directly proportional to the absorption and thus an absorption spectrum is generated. Using this nearfield IR spectroscopy technique, we study novel perovskite materials to understand their phase composition at nanometer spatial resolution. In using AFM-IR to gather mid-IR absorption spectra from sample areas smaller than a few tens of nanometers we can see chemical changes within a single perovskite crystallite. Using hyperspectral nanoscale chemical imaging we can collect images of the distribution of perovskites and stabilizers and thus provide information required to design the next generation of lighting and light harvesting devices.
en
dc.description.sponsorship
European Commission
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dc.language.iso
en
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dc.subject
infrared spectroscopy
en
dc.subject
nearfield
en
dc.subject
Nanoscale characterization
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dc.subject
AFM-IR
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dc.title
Nanoscale characterization of organic-inorganic perovskites with AFM-IR
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
8619858
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dc.type.category
Conference Presentation
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tuw.project.title
High-Performance Large Area Organic Perovskite devices for lighting, energy and Pervasive Communications
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tuw.researchTopic.id
M2
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tuw.researchTopic.id
M8
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tuw.researchTopic.id
M4
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Structure-Property Relationsship
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tuw.researchTopic.name
Non-metallic Materials
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tuw.researchTopic.value
60
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tuw.researchTopic.value
20
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tuw.researchTopic.value
20
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tuw.publication.orgunit
E164-02-1 - Forschungsgruppe Prozessanalytik
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tuw.author.orcid
0000-0003-3838-5842
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tuw.author.orcid
0000-0001-8307-5435
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tuw.event.name
JunganalytikerInnenforum 2022
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tuw.event.startdate
12-05-2022
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tuw.event.enddate
13-05-2022
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Tulln
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tuw.event.country
AT
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tuw.event.institution
IFA Tulln
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tuw.event.presenter
Yilmaz, Ufuk
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tuw.event.track
Single Track
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wb.sciencebranch
Chemie
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wb.sciencebranch.oefos
1040
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wb.sciencebranch.value
100
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item.openairetype
Presentation
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item.openairetype
Vortrag
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item.grantfulltext
none
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item.cerifentitytype
Publications
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item.cerifentitytype
Publications
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item.languageiso639-1
en
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item.openairecristype
http://purl.org/coar/resource_type/c_18cf
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item.openairecristype
http://purl.org/coar/resource_type/c_18cf
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item.fulltext
no Fulltext
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crisitem.project.funder
European Commission
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crisitem.project.grantno
8619858
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crisitem.author.dept
E164-02-1 - Forschungsgruppe Prozessanalytik
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crisitem.author.dept
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren
-
crisitem.author.dept
E164-02-1 - Forschungsgruppe Prozessanalytik
-
crisitem.author.orcid
0000-0003-3838-5842
-
crisitem.author.orcid
0000-0001-8307-5435
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crisitem.author.parentorg
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren
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crisitem.author.parentorg
E164 - Institut für Chemische Technologien und Analytik
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crisitem.author.parentorg
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren