Singlet-Only Fluorescent Emitters for OLED
Welcome to Efficient Blue
. . . a joint research project between Nanomatch and the LEXOS group at IAPP, TU Dresden to develop highly efficient and durable fluorescent OLEDs. Our goal is to develop fluorescent emitters in combination with suitable host materials where the generation of potentially harmful triplets is eliminated. This Singlet-Only concept enables simple stack designs with low-cost, purely organic materials.
We follow an integrated approach between computer driven design and experimental R&D to resolve the major challenge of OLED technology: Efficient Blue.
News and updates
-
![]()
Start of the Efficient-Blue project
Efficient Blue is a project between Nanomatch and the LEXOS group at IAPP, TU Dresden, funded by the BMWK Germany via the ZIM program. The project began in February 2024, aiming at a physical prototype by end of 2025.
-
![]()
Efficient Blue at SID Display Week
Visit Nanomatch at booth 1020 in the German Pavilion at the SID Display Week in San José from May 14 - May 17 2024
-
![]()
Proof of principle: Validation of the Singlet-Only concept
The Singlet-Only concept was developed by Nanomatch and demonstrated in computer simulations. We have identified a first set of potential candidates for materials and are now experimentally testing the first batch of devices.
The Singlet-Only Concept
Excitons are formed as singlets or triplets. According to spin statistics, 75% of the excitons formed on fluorescent emitters are triplets, and only 25% are formed in the singlet state. On fluorescent emitters, only singlets can decay radiatively, i. e. emit a photon, while long-lived triplets cannot emit light and potentially cause harm to the system, especially in the blue regime.
Exploiting a commonly overlooked effect in exciton formation allows us to tune singlet-triplet ratio of exciton formation on fluorescent emitters. This is achieved by using emitters with two specific energetic properties and careful alignment with the host material. As demonstrated in digital twins of Singlet-Only OLEDs this leads to internal quantum efficiency (IQE) close to 100%, including the promise of reduced degradation and long OLED lifetime.
Get in touch!
If you would like to learn more about the technology or would like to get in touch regarding potential partnerships, please use this form or send us an email at info@nanomatch.com.