About the lab

EXCEED Research group conducte many sided research of organic conjugated systems in area:

- Electrochemical and spectroelectrochemical techniques
- X-ray spectroscopies and surface analysis
- Conjugated compounds
- Electronics (organic)
- Electrochromic windows
- Device formation and analysis

Featured projects (1)

Project
The overall aim of the ExCEED project is to recruit an outstanding researcher and manager to be the ERA Chair Holder as well as recruit experienced researchers and innovation manager for the Silesian University of Technology (SUT) to establish the multidisciplinary Centre of Excellence (CoE) in Organic Electronics. To achieve this aim, the five-year project will be built upon the existing strong research and innovation base of SUT and the high impact ERA Chair Holder. To boost their scientific excellence and technology transfer capacity in organic electronics, the ExCEED will implement a science and innovation strategy focused on four sub-topics: 1. Organic Transistors 2. Organic Light-Emitting Diodes 3. Organic Solar Cells 4. Organic Energy Storage Systems

Featured research (34)

A new twisted donor-acceptor-donor (D-A-D) multi-photofunctional organic molecule comprising phenoselenazine as the electron donor (Ds) and dibenzo[a,j]phenazine (DBPHZ) as the electron acceptor (A) has been developed. The developed selenium-incorporated D-A-D compound features multi-color polymorphism, distinct mechanochromic luminescence, chemically-stimulated luminochromism, thermally-activated delayed fluorescence, and room-temperature phosphorescence. The internal heavy atom effect on the photophysical properties of the D-A-D system has been investigated through a comparison with the physicochemical properties of a previously developed sulfur analogue and a tellurium analogue.
Organic emitting compounds that are based onp-conjugated skeletons have emerged as promising next-gen-eration materials for application in optoelectronic devices. Inthis Minireview, recent advances in the development of or-ganic emitters that irradiate room-temperature phosphores-cence and/or thermally activated delayed fluorescence withextraordinary luminescence properties, such as aggregation-induced emission, mechanochromic luminescence, and cir-cularly polarized luminescence, are discussed.
Here, we present a sensible method of the acquisition and analysis of time-resolved photoluminescence using an ultrafast iCCD camera. This system enables the acquisition of photoluminescence spectra covering the time regime from nanoseconds up to 0.1 s. This enables us to follow the changes in the intensity (decay) and emission of the spectra over time. Using this method, it is possible to study diverse photophysical phenomena, such as the emission of phosphorescence, and the contributions of prompt and delayed fluorescence in molecules showing thermally activated delayed fluorescence (TADF). Remarkably, all spectra and decays are obtained in a single experiment. This can be done for solids (thin film, powder, crystal) and liquid samples, where the only limitations are the spectral sensitivity of the camera and the excitation wavelength (532 nm, 355 nm, 337 nm, and 266 nm). This technique is, thus, very important when investigating the excited state dynamics in organic emitters for their application in organic light-emitting diodes and other areas where triplet harvesting is of paramount importance. Since triplet states are strongly quenched by oxygen, emitters with efficient TADF luminescence, or those showing room temperature phosphorescence (RTP), must be correctly prepared in order to remove any dissolved oxygen from solutions and films. Otherwise, no long-lived emission will be observed. The method of degassing solid samples as presented in this work is basic and simple, but the degassing of liquid samples creates additional difficulties and is particularly interesting. A method of minimizing solvent loss and changing the sample concentration, while still enabling to remove oxygen in a very efficient and a repeatable manner, is presented in this work.
A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex donor-acceptor emitters is presented. With a step-by-step procedure, readers will be able to repeat and produce OLED devices based on simple organic emitters. A patterning procedure allowing the creation of personalized indium tin oxide (ITO) shape is shown. This is followed by the evaporation of all layers, encapsulation and characterization of each individual device. The end goal is to present a procedure that will give the opportunity to repeat the information presented in cited publication but also using different compounds and structures in order to prepare efficient OLEDs.
Exploration of optoelectronic properties of novel phosphorus-embedded π-conjugated compounds would provide us with fundamental information about the design of hitherto unknown electroactive organic materials. Herein, detailed photophysical and electrochemical profiles of a series of benzene-cored diketophosphanyl compounds were investigated with steady and time-resolved spectroscopic and spectroelectrochemical techniques. The comparative studies revealed the impact of phosphorus and nitrogen atoms on their triplet energies and on the behaviour of electrochemical processes to form radical species.

Lab head

Przemyslaw Data
Department
  • Department of Physical Chemistry and Technology of Polymers

Members (8)

Radosław Motyka
  • Silesian University of Technology
Marharyta Vasylieva
  • Centrum Materiałów Polimerowych i Węglowych PAN
Pavel Chulkin
  • Silesian University of Technology
Marli Ferreira
  • Federal University of Santa Catarina
Aleksandra Nyga
  • Silesian University of Technology
Leandro Espíndola
  • Silesian University of Technology
Nicolas Oliveira Decarli
  • Silesian University of Technology
Jadwiga Sołoducho
Jadwiga Sołoducho
  • Not confirmed yet