DPG Frühjahrstagung Dresden 2017 starts tomorrow

The DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) will take place from March 19 – 24 in Dresden this year. Below, you find a list of our group’s contributions throughout the week. We are looking forward to an exciting and fruitful week of discussions and exchange. See you there. (There is even a hashtag for the event: #DPGDD17)

Mo, 11:00 CPP 7.1 Two-color warm white hybrid OLEDs from thermally activated delayed fluorescence — Ludwig Popp, Paul Kleine, Reinhard Scholz, Ramunas Lygaitis, Olaf Zeika, Axel Fischer, Simone Lenk, and Sebastian Reineke
Mo, 11:15 CPP 7.2 Conjugation induced thermally activated delayed fluorescence — Paul Kleine, Qiang Wei, Yevhen Karpov, Xianping Qiu, Hartmut Komber, Karin Sahre, Anton Kiriy, Ramunas Lygaitis, Simone Lenk, Brigitte Voit, and Sebastian Reineke
Mo, 12:15 CPP 7.6 Ultrathin metal electrode for bottom-emitting OLEDs on buckled substrates — Yungui Li, Toni Bärschneider, Paul-Anton Will, Yuan Liu, Simone Lenk, and Sebastian Reineke
Di, 15:45 CPP 26.8 Absolute optical sensor based on biluminescence — Caterin Salas Redondo and Sebastian Reineke
Mi, 18:30 CPP 50.13 controlling excitons in exciplex host systems for efficient white OLEDs — Yuan Liu, Simone Lenk, Karl Leo, and Sebastian Reineke
Mi, 18:30 CPP 50.19 Synthesis and characterisation of the new emitters for OLED applications — Ramunas Lygaitis, Olaf Zeika, Reinhard Scholz, Ludwig Popp, Paul Kleine, Simone Lenk, and Sebastian Reineke
Mi, 13:00 DS 29.14 Influence of radiative efficiency and dipole orientation on optimal layer thicknesses of monochrome OLEDs for maximum EQE — Paul-Anton Will, Cornelius Fuchs, Reinhard Scholz, Simone Lenk, and Sebastian Reineke
Mi, 15:15 DS 34.2 Determination of the molecular orientation in absorptive organic thin films — Christian Hänisch, Simone Lenk, and Sebastian Reineke
Mi, 09:30 HL 52.1 Full Range Electrothermal Modeling of Organic Light-emitting Diodes — Axel Fischer, Koen Vandewal, Simone Lenk, and Sebastian Reineke
Mi, 15:00 HL 64.19 Diffuse Transmission and Reflection of Light Scattering Polymer Substrates for Organic Light-emitting Diodes — Pen Yiao Ang, Georg Marks, Abdalla Mahmoud, Axel Fischer, Simone Lenk, and Sebastian Reineke

Ryutaro Komatsu (see below) is currently visiting our group as part of an ongoing exchange program between TU Dresden and Universities from Japan. He is a PhD candidate of Prof. Junji Kido from Yamagata University – good chance to see some of their recent work.

Mi, 18:30 CPP 50.14 Efficient Deep-blue Pyridimidine-based TADF Emitters Using a Highly Twisted Molecular Skeleton — •Ryutaro Komatsu, Tatsuya Ohsawa, Hisahiro Sasabe, Kohei Nakao, Yuya Hayasaka, and Junji Kido

 

ECME 2017 in Dresden

This year, the 14th European Conference on Molecular Electronics (ECME) will be
held in Dresden on August 29 – September 2, 2017. Important date to remember and of course consider is the deadline for the Call for Papers, which is March 31, 2017. Please check it out to learn more about the different topics the conference will cover. The event already has  a broad and exciting collection of invited speakers and now it is looking for your contribution to turn it into a great and vivid week of molecular electronics science.

MRS Spring 2016 – Symposium EP1: the friday sessions are here

Its the last day of MRS Spring 2016 and still we are by far not done with our Symposium EP1: Organic Excitonic Systems and Devices. We have a full day of oral presentations split into two major sessions.

EP1.7: Advanced Organic Devices and Modeling

As the title indicates, some new concepts for devices based on organic materials will be central in this session. This is complemented by some efforts on modeling. Keywords for this session are:

  • Stretchable electronic structures
  • Modeling exciton and polaron dynamics for transient EL in OLEDs
  • Nanoscale electrical inhomogeneities in OLEDs
  • Visible light communications with organic systems
  • Method to predict interface barriers in OLED layers
  • Rare-earth up-conversion composites for PV

Our invited speaker in the morning is Graham A. Turnbull. Note: Franky So was not able to come to Phoenix, so that his presentation is cancelled. Klaus Meerholz had his talk already late last night.

EP1.8: Excitonic Charge Transfer States

Our final look in this last session is on charge transfer states and related phenomena. Most naturally, this is the time, where we will have presentations that are closer to photovoltaic properties than in the days before. Actually, this session closes the loop to the first sessions of the week, where we were guided a lot by internal charge transfer states in TADF materials.

Here are some details to the post-lunch session:

  • Enhancing exciton dissociation rates at heterojunctions using FRET
  • CT state transport at donor-acceptor blends
  • Magnetic field modulation of exciton recombination
  • Tailoring interfaces using additive engineering
  • Generation and modulation of chi^2 optical non-linearities
  • Printing highly efficient solution processed solar cells
  •  Multiple CT states in ordered and disordered systems

Max Shtein will be our invited speaker of the afternoon session.

See you around!

Afternoon Session: Excitons in Organic and Hybrid Systems II

This afternoon, we are progressing with the general scheme of topics with the session EP1.5 Excitons in Organic and Hybrid Systems II of our Symposium EP1. Important: We have one additional speaker in the afternoon: Klaus Meerholz – his talk got shifted from Friday to this session. The following topics we will see:

  • NIR EL from surface plasmons
  • Area light-emitting transistors
  • Multiple FRET pathways
  • Topological phases in organic materials
  • Manipulating Excitons with plasmonic nanoantennas
  • Singlet exciton fission
  • Real time exciton diffusion mapping
  • Organic memory devices

Our invited speakers for the afternoon are Jana Zaumseil, Joel Yuen-Zhou, Gleb M. Akselrod, and Klaus Meerholz.

See you in a bit!

Session preview: Excitons in Organic and Hybrid Systems I

This announcement comes in parallel with the start of the session Excitons in Organic and Hybrid Systems I of our Symposium EP1, which began 5 minutes ago. Today we are looking in more detail on processes connected with excitons in organic and hybrid systems. We will see sophisticated techniques, modeling, etc.

Here are some keywords that we will come across during the morning program:

  • Nanoscale exciton migration
  • QM/MM simulation of TADF materials
  • Exciton migration in TADF materials
  • Exciton transport in colloidal QDs
  • Spin oscillations
  • Single molecule look on TADF
  • Spatial confinement of triplet excitons in rubrene
  • Exciton processes in OLEDs

Our invitees are Naomi Ginsberg, William Tisdale, John Lupton, and Grayson Ingram.

Preview: Two sessions on Wednesday

Tomorrow, Wednesday March 30, we have two sessions at our Symposium EP1: Organic Excitonic Systems and Devices.

EP1.2: Organic Emitters

The morning focus will be on the emitters itself, where we will here recent progress on various molecular concepts for high performance luminescence. This will include the fundamental studies that excel our current understanding of these emitters. Some things that we will see:

  • Design rules for TADF emitters
  • Crystalline OLED emission layers for nearly perfect emitter alignment
  • Investigation of exciplex emission (electric field dependence and charge separation)
  • Nickel-Tetra-Mesityl-Porphoyrin photophysics
  • Platinum complexes for high efficiency, color pure blue OLEDs
  • Control of molecular orientation
  • TADF emitters for LECs and OLEDs
  • Biluminescence for optical sensing
  • Photophysics of H- and J-aggregates

Our invited speakers of the morning are: Andrew Monkman, Wolfgang Brütting, and Frank Würthner.

EP1.3: Organic Lasers

In the afternoon we switch gears – Its laser time. With the basis of the laser tutorial we had on Monday, we should be all set for some interesting contributions related to laser physics with organics. Important: Due to a serious illness of one of our speakers, the program of the first part of the EP1.3 session has been updated. We will start at 2:00pm rather than the originally planned time of 1:30pm. Please refer to the online program for the latest updates!

Here are some details to the post-lunch session:

  • Condensate physics with organic polaritons
  • Tunable, narrow line width solid-state lasers
  • LED-pumped organic lasers (planar integration) based on luminescent concentration
  • Self-assembled colloidal lasers
  • Low threshold up-converted laser
  • Strong coupling in organic microcavities
  • Solvent nano imprint lithography of polymer lasers
  • Photoluminescence enhancement in nano cavities

Our afternoon invited speakers are: Stéphane Kéna-Cohen and Alexander J. Kuehne.

Again, a lot of cool and interesting things to look forward to. See you tomorrow!

Session Preview: EP1.1 – Organic Light-Emitting Devices

Tomorrow, Tuesday March 29, we start out with the first Session of our Symposium EP1 Organic Excitonic Systems and Devices. The session runs under the title Organic Light-Emitting Devices (OLEDs). So clearly, we are looking to a collection of recent progress on the OLED technology, where the optimization of efficiency is in the central focus. Here are some keywords that will represent the content of tomorrow:

  • Enhanced emission of OLEDs
  • Bright NIR OLEDs based on high mobility polymers
  • Intrinsic degradation mechanisms in UV and blue OLEDs
  • Increased stability of TADF OLEDs
  • 100% triplet harvesting in fluorescent OLEDs
  • Blue phosphorescent OLEDs
  • Absence of triplet up-conversion in anthracene based emitters
  • Afterglow OLEDs (a demonstration of biluminescence in OLEDs)
  • Origin and control of emitter orientation in OLEDs

Our invited speakers for this session are: Mark Thompson, Stephen R. Forrest, and Jang-Joo Kim.