LIQUID CRYSTALLINE EMITTERS FOR ORGANIC LIGHT-EMITTING DIODES

15 June 2020

Liquid crystalline (LC) organic semiconductors are known for their self-assembling properties. Despite a number of studies that implemented LC emitters in OLEDs, key photophysical properties were missing so far. In a recent collaboration with the University of St Andrews (UK) and the University of Paderborn (Germany), we studied a columnar liquid crystalline perylene derivative and implemented it in state-of-the-art OLEDs. We found preferential horizontal orientation of the transition dipole moments, which improves OLED outcoupling efficiency. Furthermore, our developed OLEDs reached 10,000 cd/m² at only 5.7 V, which is one of the best performances of columnar LC-OLEDs so far. The work has now been published open access in Advanced Optical Materials.

 

MEET CAROLINE AT SPIE PHOTONICS EUROPE DIGITAL FORUM

01 April 2020

With the current cancellation of conferences due to COVID-19, SPIE decided to move the Photonics Europe Conference to a digital forum. Join us at this FREE event, which consists of pre-recorded talks during 6-10 April 2020 with the possibility for online Q&A and discussions. Caroline will present our latest developments on OLEDs used for optogenetics and Calcium imaging as well as some brand new results from Ilenia.

SPIE Photonics Europe Digital Forum
 

OPTICAL COMMUNICATION VIA ORGANIC LEDS

03 March 2020

OLEDs have typically been considered to be slow devices due to their inherently low charge carrier mobility. A collaborative work between the University of St Andrews and the University of Edinburgh with researchers from the organophotonic sensing lab have now developed OLEDs that achieve record data rates above 1 Gbps. The article, published in Nature Communications, outlines the design strategy and potential application in visible light communications.

 

MEET US AT ICO CONFERENCE IN DRESDEN

23 Jan 2020

Submit an abstract to the 25th Congress of the International Commission for Optics (ICO) or the 16th International Conference on Optics Within Life Sciences (OWLS).

Check out the list of speakers, which includes three Nobel laureates! The conference will take place in Dresden, Germany, from Aug 31st to Sep 4th, 2020.

Deadline for abstract submission: March 12th, 2020

ICO banner
 

OLEDS WITH EXTREMELY HIGH BRIGHTNESS DEVELOPED

20 Jan 2020

In our recent paper, published in Advanced Optical Materials, we show our development towards extremely bright blue OLEDs. Using a fluorescent blue emitter, doped charge transport layers, optimizing layer structure and device dimensions, we reached 132,000 cd/m² and 2.4 mW/mm² optical power output at only 5 V. This opens new possibilities for OLEDs in applications that require high brightness such as biomedical devices, optical communication, or outdoor displays.

 

NARROWBAND ORGANIC LIGHT‐EMITTING DIODES FOR FLUORESCENCE MICROSCOPY AND CALCIUM IMAGING

05 Sep 2019

In our latest paper, published in Advanced Materials, we show for the first time that organic light‐emitting diodes (OLEDs) can be used as light source for fluorescence microscopy. We use spectral multiplexing to enable high contrast, which results in fluorescence images of live cells with similar image quality to conventional illumination. Furthermore, we applied the device to recording neuronal activity in Drosophila melanogaster at video rates.

 

Impressum    Data protection

© 2020 by Caroline Murawski