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Spacial and Morphological Control of Cyanine Dye Crystals

English title Spacial and Morphological Control of Cyanine Dye Crystals
Applicant Heier Jakob
Number 152909
Funding scheme Project funding (Div. I-III)
Research institution Abteilung Funktionspolymere EMPA
Institution of higher education Swiss Federal Laboratories for Materials Science and Technology - EMPA
Main discipline Condensed Matter Physics
Start/End 01.07.2014 - 31.12.2018
Approved amount 385'186.00
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All Disciplines (3)

Discipline
Condensed Matter Physics
Organic Chemistry
Microelectronics. Optoelectronics

Keywords (5)

Organic Thin Film; Nucleation and Growth; Organic Single Crystal; Cyanine Dye; J-aggregate

Lay Summary (German)

Lead
Organische Halbleiter sind eine vielversprechende Klasse von Materialien für opto-elektronische Bauteile der nächsten Generation. Konjugierte Polymer und Oligomere werden schon heute in organischen Leuchtdioden, Solarzellen oder Transistoren eingesetzt. Cyanin Farbstoffe sind kleine organische Moleküle welche erfolgreich zur spektralen Sensibilisierung in photographischen Filmen, in der DVD Technologie und in der Biochemie zur Markierung von Molekülen eingesetzt werden. Die interessantesten opto-elektronischen Eigenschaften von Cyaninen findet man in ihrem aggregiertem Zustand (1-oder 2-dimensionale Kristalle). Dazu zählen herausragende Transporteigenschaften des angeregten Zustandes (Exciton Delokalisation), starke Lichtabsorption und hohe nichtlinear optische Koeffizienten. Bis heute können diese Eigenschaften der Cyanin Farbstoffe jedoch noch nicht zur Anwendung kommen, da eine Bildung von Cyanin-Aggregaten in dünnen Filmen nicht kontrolliert möglich ist.
Lay summary

Inhalt und Ziel des Forschungsprojekts

In vorangehenden SNF-Projekten (200021_132502 und 200020_149127) haben wir das kontrollierte Wachstum von Cyanin Einkristallen in entnetzenden dünnen Filmen untersucht. In diesem Projekt soll diese Methode dahingehend erweitert werden, dass sich die Moleküle in Aggregat-Kristalle organisieren. Die opto-elektronischen Eigenschaften der Filme werden untersucht und mit ihrer Morphologie korreliert. Ein weiteres Ziel des Projektes ist die Eigenschaften der Cyanin Filme in Bauteilen zu testen. Dafür sollen Partner aus Industrie und Wissenschaft gefunden werden.  

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojekts

Eine der grossen Herausforderungen in der organischen Elektronik ist die Verbesserung der Transporteigenschaften der Materialien. Ein möglicher Lösungsweg ist die Integration von aggregierten Farbstoffmolekülen in opto-elektronischen Bauteilen. Unsere Arbeit soll erste Schritte in diese Richtung aufzeigen.  

Direct link to Lay Summary Last update: 02.06.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Physical vapour deposition of cyanine salts and their first application in organic electronic devices
Gesevičius Donatas, Neels Antonia, Duchêne Léo, Hack Erwin, Heier Jakob, Nüesch Frank (2019), Physical vapour deposition of cyanine salts and their first application in organic electronic devices, in Journal of Materials Chemistry C, 7(2), 414-423.
Cyanine platelet single crystals: growth, crystal structure and optical spectra
Leclaire Nicolas A., Li Musen, Véron Anna C., Neels Antonia, Heier Jakob, Reimers Jeffrey R., Nüesch Frank A. (2018), Cyanine platelet single crystals: growth, crystal structure and optical spectra, in Physical Chemistry Chemical Physics, 20(46), 29166-29173.
Insights into photovoltaic properties of ternary organic solar cells from phase diagrams
Makha Mohammed, Schwaller Philippe, Strassel Karen, Anantharaman Surendra B., Nüesch Frank, Hany Roland, Heier Jakob (2018), Insights into photovoltaic properties of ternary organic solar cells from phase diagrams, in Science and Technology of Advanced Materials, 19(1), 669-682.
Organic Salt Semiconductor with High Photoconductivity and Long Carrier Lifetime
Wang Lei, Jenatsch Sandra, Ruhstaller Beat, Hinderling Christian, Gesevičius Donatas, Hany Roland, Nüesch Frank (2018), Organic Salt Semiconductor with High Photoconductivity and Long Carrier Lifetime, in Advanced Functional Materials, 28(16), 1705724-1705724.
Light Scattering Enhancement at the Absorption Edge in Dewetting Droplets of Cyanine Dyes
Leclaire Nicolas A., Boudoire Florent, Hack Erwin, Bronnimann Rolf, Nuesch Frank A., Heier Jakob (2017), Light Scattering Enhancement at the Absorption Edge in Dewetting Droplets of Cyanine Dyes, in ADVANCED OPTICAL MATERIALS, 5(5), 1600903.

Collaboration

Group / person Country
Types of collaboration
X-ray structure analysis, LOC, ETHZ Switzerland (Europe)
- Publication
- Research Infrastructure
Prof. Jeffrey Reimers, Center for Quantum and Molecular Structures, Shanghai University China (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Photochemical Dynamics Group at EPFL, Prof. Jaques Moser Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Theory and Atomistic Simulations of Materials, EMPA, Dr. D. Passerone Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Research Center for Microtechnology, University of Applied Science Vorlarlberg, Stefan Partel Austria (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Exploratory Photonics IBM Zürich Research Laboratory, Dr. Rainer Mahrt Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Gordon Research Seminar and Conference on Solar Energy Conversion Poster Physical Vapour Deposition of Cyanine Dye and First Application in Organic Electronics 16.06.2018 Hongkong, Hongkong Nüesch Frank; Heier Jakob; Donatas Gesevisius;
101st Canadian Chemsitry Conference Talk given at a conference General Approach for an Efficient Anion Exchange in Organic Salt Semiconductors 26.05.2018 Edmonton, Alberta, Canada Nüesch Frank; Donatas Gesevisius; Heier Jakob;
MRS Spring Meeting Poster Excitonic Coupling in a Thin-Film Single Crystal of Cyanine Dye 02.04.2018 Phoenix, United States of America Heier Jakob; Leclaire Nicolas; Nüesch Frank;
SoMas Summerschool Poster Structure and Properties of a Cyanine Quasi-2D Crystal 02.07.2017 Mittelwihr, France Nüesch Frank; Heier Jakob; Leclaire Nicolas;
FEMS-Junior Euromat 2016 Poster Emergent Optical Properties of Cyanine Dye Droplets 11.07.2016 Lausanne, Switzerland Leclaire Nicolas; Nüesch Frank; Heier Jakob;
EMN Meeting on Droplets Talk given at a conference Light scattering properties of dewetting droplets of organic dyes 10.05.2016 San Sebastian, Spain Heier Jakob;
Edward Kramer Memorial Conference Poster Enhancement of Scattering by Strongly Absorbing Dyes 06.01.2016 Santa Barbara, United States of America Heier Jakob;
ECME Poster Light scattering properties of dewetting droplets of organic dyes 01.09.2015 Strasbourg, France Leclaire Nicolas;


Associated projects

Number Title Start Funding scheme
132502 Structured Templates of [6,6]-Phenyl C61-Butyric Acid Methyl Ester (PCBM) for Applications in Photovoltaics and Photonics 01.11.2010 Project funding (Div. I-III)
149127 Structured Templates for Dye Aggregation and Crystallization for Applications in Photovoltaics and Photonics 01.11.2013 Project funding (Div. I-III)
160116 Morphology control by ionic interactions of cyanine / PCBM bulk heterojunctions for photovoltaic applications 01.08.2015 Project funding (Div. I-III)

Abstract

Organic semiconductors are a promising class of materials for future electro-optical devices. Conjugated polymers and oligomers are leading the field in organic light-emitting devices, organic photovoltaics and thin film transistors. Cyanine dyes are well known in silver halide photography and are successfully applied in DVD technology or as fluorescent probes in biology but have rarely been used as solid organic semiconductors. Cyanine dyes form aggregates with extremely efficient exciton transport, extraordinary strong absorbance, important non-linear optical coefficients as well as excited state quenching. These properties would be of great interest in the field of organic semiconductors, but can only be exploited when aggregates form in a controlled manner in thin films.The project is a continuation of the SNF projects 200021_132502 and 200020_149127 on “Structured Templates for Dye Aggregation and Crystallization for Applications in Photovoltaics and Photonics”. In the latter project we discovered a new growth method for single crystals of cyanine dyes. We now propose to self-assemble cyanine dyes into aggregates by applying that growth method.In a first step we will continue to investigate the basic mechanisms of nucleation, growth and polymorphic transformations. In a second step we will manipulate crystal growth and structure with surfaces showing a surface energy pattern fabricated by micro contact printing. Crystallization on these surfaces will be directed towards the growth of J-aggregate crystals. We will fully characterize the electro-optical properties of the thin film crystals and relate these properties to the structure. The project aims at establishing collaborations to find applications in opto-electronics for cyanine dye crystal films.
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