High‐Efficiency and Low Efficiency Roll‐Off Blue‐Emission Crystalline Organic Light‐Emitting Diodes by embedding Triplet‐Triplet Annihilation Nanoaggregates DOI Open Access

Wantao Zheng,

Feng Zhu, Donghang Yan

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 9, 2024

Abstract Crystalline host matrix (CHM)‐nanoaggregates (NA) structure combines the advantages of a crystalline and high‐performance luminescent materials. This emerges as highly effective strategy for achieving efficient blue organic light‐emitting diodes (OLEDs). approach can tackle current challenge low voltage high brightness in amorphous OLEDs. In this work, triplet‐triplet annihilation (TTA) material NA are embedded into CHM sensitize fluorescent dopant (D) BD1. As result, CHM‐TTANA‐D device is created, demonstrating an outstanding external quantum efficiency (EQE) 8.46%. Notably, roll‐off mitigated. The maintains EQE ≈7.50% at 1000 cd m − 2 , which highest values among leverages benefits exhibits swift turn‐on rapid increase density. leads to significant improvement photon output reduced series‐resistance Joule heat loss ratio. findings underscore promising nature favorable design paradigm thin‐film OLEDs (C‐OLEDs).

Language: Английский

Light Emission Mechanisms of Solid-Solution Host Crystalline Organic Light-Emitting Diodes DOI
Shuzhen Zou, Shuang Zhou, Feng Zhu

et al.

ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

Citations

0
High‐Efficiency and Low Efficiency Roll‐Off Blue‐Emission Crystalline Organic Light‐Emitting Diodes by embedding Triplet‐Triplet Annihilation Nanoaggregates DOI Open Access

Wantao Zheng,

Feng Zhu, Donghang Yan

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 9, 2024

Abstract Crystalline host matrix (CHM)‐nanoaggregates (NA) structure combines the advantages of a crystalline and high‐performance luminescent materials. This emerges as highly effective strategy for achieving efficient blue organic light‐emitting diodes (OLEDs). approach can tackle current challenge low voltage high brightness in amorphous OLEDs. In this work, triplet‐triplet annihilation (TTA) material NA are embedded into CHM sensitize fluorescent dopant (D) BD1. As result, CHM‐TTANA‐D device is created, demonstrating an outstanding external quantum efficiency (EQE) 8.46%. Notably, roll‐off mitigated. The maintains EQE ≈7.50% at 1000 cd m − 2 , which highest values among leverages benefits exhibits swift turn‐on rapid increase density. leads to significant improvement photon output reduced series‐resistance Joule heat loss ratio. findings underscore promising nature favorable design paradigm thin‐film OLEDs (C‐OLEDs).

Language: Английский

Citations

0