MIT Technology Review – Innovator Under 35 (Poland)

MIT Technology Review – Innovator Under 35 (Poland)

Przemyslaw Data was chosen one of the Polish Innovators Under 35.

Przemyslaw Data
2017, Europe
Researcher at Silesian University of Technology
Materials

Przemyslaw Data is one of the researchers leading the charge to find reliable, energy efficient light sources for Europe. Data is working with highly efficient organic light emitting diodes (OLEDs) to reduce the electricity demand and, in turn, reduce CO2 emissions. Data uses thermally activated delayed fluorescence (TADF) and the exciplex phenomenon to eliminate the use of the energy intensive and rare element iridium for the production of OLEDs and to radically increase OLED output efficiency. It was Data’s own research that helped to prove that exciplex processes can used to increase light emission efficiency. Thanks to this groundwork, he has been able to produce several highly efficient OLED devices based on this technology. The consequences of Data’s innovation could be widespread and impactful, ranging from cheaper OLED screens for use in smartphones and tablets to accessible and inexpensive lighting for communities in need.

 

Next accepted manuscript

Our next manuscript was accepted in  ChemPhysChem

Triplet Harvesting with a Simple Aromatic Carbonyl

The efficiency of organic light-emitting diodes crucially depends on triplet harvesters. These accept energy from triplet correlated electron hole pairs and convert it into light. Here, experimental evidence is given that simple aromatic carbonyls, such as thioxanthone, could serve this purpose. In these compounds, the emissive 1ππ* excitation may rapidly equilibrate with an upper triplet state (3nπ*). This equilibrium may persist for nanoseconds. Population of the 3nπ* state via energy transfer from an electron hole pair should result in fluorescence emission and thereby triplet harvesting. To demonstrate the effect, solutions of 1,4-dichlorobenzene (triplet sensitizer) and thioxanthone (harvester) were excited at 266 nm with a nanosecond laser. The emission decay reveals a 100 ns decay absent in the thioxanthone only sample. This matches predictions for an energy transfer limited by diffusion and gives clear evidence that thioxanthone can convert triplet excitations into light.

Christian Torres Ziegenbein, Dr. Sascha Fröbel, Maria Glöß, Roberto S. Nobuyasu, Dr. Przemyslaw Data, Prof. Andrew Monkman, Prof. Peter Gilch

Next accepted manuscript

Our next manuscript was accepted in  Journal of Material Chemistry C

The contributions of molecular vibrations and higher triplet levels to the intersystem crossing mechanism in metal-free organic emitters.

Intense, simultaneous, room temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) is observed in a series of donor-acceptor-donor (D–A–D) molecules. This dual-luminescence is stronger in the “angular” isomers, compared to their “linear” regioisomers, which is consistent with an enhanced intersystem crossing (ISC) in the former. Herein, we demonstrate that the small energy gap between the triplet levels, T1-Tn, below the lowest singlet state, S1, in the “angular” regioisomers, enhances the coupling between S1 and T1 states and favors ISC and reverse ISC (rISC). This is consistent with a spin-vibronic mechanism. In the absence of this “triplet ladder”, due to the larger energy difference between T1 and Tn in the “linear” regioisomers, the ISC and rISC are not efficient. Remarkably the enhancement on the ISC rate in the “angular” regioisomers is accompanied by an increase on the rate of internal conversion (IC). These results highlight the contributions of higher triplet excited states and molecular vibronic coupling to harvest triplet states in organic compounds, and casts the TADF and RTP mechanisms into a common conceptual framework.

Rongjuan Huang, João Avó, Thomas Northey, E. Chaning-Pearce, Paloma L. dos-Santos, Jonathan S. Ward, Przemyslaw Data, Marc K. Etherington, Mark A. Fox, Thomas J. Penfold, Mário N. Berberan-Santos, João C. Lima, Martin R. Bryce, and Fernando B. Dias.

Next accepted manuscript

Our next manuscript was accepted in Nature Communications

Regio- and conformational isomerization critical to design of efficient thermally-activated delayed fluorescence emitters

The key to engineering an efficient TADF emitter is to achieve a small energy splitting between a pair of molecular singlet and triplet states. This work makes important contributions towards achieving this goal. By studying the new TADF emitter 2,7-bis(phenoxazin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DPO-TXO2) and the donor and acceptor units separately, the available radiative and non-radiative pathways of DPO-TXO2 have been identified. The energy splitting between singlet and triplet states was clearly identified in four different environments, in solutions and solid state. The results show that DPO-TXO2 is a promising TADF emitter, having ΔEST = 0.01 eV in zeonex matrix. We further show how the environment plays a key role in the fine tuning of the energy levels of the 1CT state with respect to the donor 3LED triplet state, which can then be used to control the ΔEST energy value. We elucidate the TADF mechanism dynamics when the 1CT state is located below the 3LE triplet state which it spin orbit couples to, and we also discuss the OLED device performance with this new emitter, which shows maximum external quantum efficiency (E.Q.E.) of 13.5% at 166 cd m−2.

Marc K. Etherington, Flavio Franchello, Jamie Gibson, Thomas Northey, Jose Santos, Jonathan S. Ward, Heather F. Higginbotham, Przemyslaw Data, Aleksandra Kurowska, Paloma Lays Dos Santos, David R. Graves, Andrei S. Batsanov, Fernando B. Dias, Martin R. Bryce, Thomas J. Penfold & Andrew P. Monkman.

AMN8 – 8th International Conference on Advanced Materials and Nanotechnology

AMN8 – 8th International Conference on Advanced Materials and Nanotechnology

8th International Conference on Advanced Materials and Nanotechnology AMN8, Queenstown (New Zealand) – 12-16.02.2017

AMN8 is the eight in our biennial series of meetings that focus on the latest research on advanced materials and nanotechnology. This event will continue the best traditions of previous events, which include a range of high-impact plenary presentations, cutting-edge invited and contributed talks, interactive poster presentations and convivial social events.

Conferences focus on recent progress in advanced materials and nanotechnology. In these areas:

  • Biological Interface
  • Engineered Nanosystems
  • Molecular Materials
  • Nanoscale Structures
  • Physical Phenomena

In addition, the programme will feature sessions focussed on the following topics:

  • Organic Electronics
  • Graphene
  • Metal-organic Frameworks
  • Spintronics

My presentation:

Analysis of TADF process in ambipolar OLED emitters

P. Data

Next accepted manuscript

Our next manuscript was accepted in Chemical Science

Thermally Activated Delayed Fluorescent Phenothiazine-Dibenzo[a,j]phenazine-Phenothiazine Triads Exhibiting Tricolor-Changing Mechanochromic Luminescence

The key to engineering an efficient TADF emitter is to achieve a small energy splitting between a pair of molecular singlet and triplet states. This work makes important contributions towards achieving this goal. By studying the new TADF emitter 2,7-bis(phenoxazin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DPO-TXO2) and the donor and acceptor units separately, the available radiative and non-radiative pathways of DPO-TXO2 have been identified. The energy splitting between singlet and triplet states was clearly identified in four different environments, in solutions and solid state. The results show that DPO-TXO2 is a promising TADF emitter, having ΔEST = 0.01 eV in zeonex matrix. We further show how the environment plays a key role in the fine tuning of the energy levels of the 1CT state with respect to the donor 3LED triplet state, which can then be used to control the ΔEST energy value. We elucidate the TADF mechanism dynamics when the 1CT state is located below the 3LE triplet state which it spin orbit couples to, and we also discuss the OLED device performance with this new emitter, which shows maximum external quantum efficiency (E.Q.E.) of 13.5% at 166 cd m−2.

Masato Okazaki, Youhei Takeda, Przemyslaw Data*, Piotr Pander, Heather Higginbotham, Andrew Monkman, Satoshi Minakata.

IV Warsztaty Organicznej Drukowanej i Elastycznej Elektroniki

IV Warsztaty Organicznej Drukowanej i Elastycznej Elektroniki

IV Warsztaty Organicznej Drukowanej i Elastycznej Elektroniki,  Lodz (Poland) – 25.11.2016

Warsztaty adresowane są do przedstawicieli różnych branż przemysłu, nie tylko elektronicznego, a także do studentów, doktorantów i pracowników naukowych. Celem Warsztatów będzie zaprezentowanie obecnie istniejących zastosowań przemysłowych elektroniki organicznej i perspektyw włączenia się polskich przedsiębiorstw w tą nowoczesną dziedzinę przemysłu. Będzie to także forum umożliwiające nawiązanie kontaktów i współpracy.

My invited presentation:

Wykorzystanie opóźnionej fluorescencji do zwiększenia wydajności OLED

P. Data

ICFPAM2016 – 14th International Conference on Frontiers of Polymers and Advanced Materials

ICFPAM2016 – 14th International Conference on Frontiers of Polymers and Advanced Materials

14th International Conference on Frontiers of Polymers and Advanced Materials, Daejeon (South Korea) – 31.10-4.11.2016

The ICFPAM series of conferences over the years facilitated the coming together of scientists, engineers and business leaders to discuss multidisciplinary aspects of macromolecular science. We hope to carry on this tradition with the 14th ICFPAM and have assembled an impressive assembly of plenary, keynote and invited speakers. This year attendees include Professor Akira Suzuki (Nobel Laureate in Chemistry 2010), Professor Paras N. Prasad – SUNY Distinguished Professor at the University at Buffalo, Prof. Jürgen Rühe, University of Freiburg, Germany and Professor Kilwon Cho, Pohang University of Science and Technology in addition to several distinguished scientists as Keynote speakers and over 150 Invited Speakers.

The program of the conference would focus on current and emerging trends in polymer science and advanced materials, as well as their applications. The broad themes addressed during the conference include synthesis and properties of advanced materials, advanced materials for nanophotonics and biophotonics, polymers and hybrid materials for plastics electronics and photonics, organics and polymers for solar cells as well as thermoelectric energy conversion, nano-scale and nanostructured materials and devices, new materials and devices for defense technology and, biomaterials and their applications.

My invited presentation:

Delayed Fluorescence as a Tool to Obtain Highly Efficient OLED Devices

P. Data

SPIE Security+ Defence

SPIE Security+ Defence

SPIE Security+ Defence, Edinburgh (UK) – 26-19.09.2016

This unique symposium will offer many opportunities to network with colleagues from a variety of disciplines in academia, industry, and government from all over the world, whilst still maintaining a distinctly European focus. SPIE Security+Defence will consider all aspects of this evolving field of optronics and photonics:

• Materials
• Optical devices
• Optronics
• Enabling technologies
• Advanced concepts
• Sensors (including their design, fabrication and exploitation)
• Nanotechnology
• Bio-inspiration and bio-mimetics
• Signal processing and control
• Laser technologies and their application (including high-power devices and applications)
• Electro-optic systems and concepts
• Modelling and simulation
• Quantum information science and technology
• Emerging security and defence requirements
• Target and background signatures
• Human observer performance
• Autonomy in sensing
• Cyber defence

Other relevant topics are also welcome to ensure a vibrant meeting. Engineers and researchers from government, military, academia and the commercial sector will discuss current status and future directions of a wide range of R&D projects. Participation from academic institutes is especially encouraged; graduate and undergraduate student researchers are invited to submit their work and interact with international leaders. All papers presented at this event will appear in the SPIE Digital Library.

My invited presentation:

Exciplex phenomena, an easy way to tailor OLED emitters

P. Data

BPS2016 – Baltic Polymer Symposium

BPS2016 – Baltic Polymer Symposium

Baltic Polymer Symposium, BPS 2016, Klaipeda (Lithuania) – 21-23.09.2016

Baltic Polymer Symposium is a traditional conference, started in year 2001, circulating in Baltic states. The conference is meeting point for polymer scientists and especially young scientists, Ms and PhD students from Baltics. Still, the conference has broad international recognition nowadays, having participants from more than 15 countries. The most important areas covered by the conference are polymeric materials and composites, conductive polymers, electrochemistry and photochemistry of polymers.

My presentation:

Electrochemical and spectroelectrochemical analysis of novel TADF emitters

P. Data, A. Kurowska