Quantitative estimation of exciton quenching strength at interface of charge injection layers and organic semiconductor
Sign Up to like & getrecommendations! Published in 2017 at "Organic Electronics"
DOI: 10.1016/j.orgel.2016.12.004
Abstract: Abstract The performance of polymer light emitting diodes (PLEDs) degrades due to exciton quenching at the interface with charge injection layers and electrodes. We investigate the photo-physics of singlet excitons in Poly (9, 9-dioctylfluorene-alt-benzothiadiazole) (F8BT)… read more here.
Keywords: exciton quenching; charge injection; injection; injection layers ... See more keywords
Influence of the bias-dependent emission zone on exciton quenching and OLED efficiency
Sign Up to like & getrecommendations! Published in 2019 at "Organic Electronics"
DOI: 10.1016/j.orgel.2019.04.027
Abstract: Abstract We present an electro-optical model of a three-layer phosphorescent OLED which accurately describes the measured current efficiency and transient electroluminescence decay for different biases. Central findings are a bias-dependent emission zone, which influences light… read more here.
Keywords: bias dependent; dependent emission; emission zone; exciton quenching ... See more keywords
Improving the performance of quantum dot light-emitting diodes by tailoring QD emitters.
Sign Up to like & getrecommendations! Published in 2023 at "Nanoscale"
DOI: 10.1039/d2nr07078b
Abstract: As the emitters of quantum dots (QDs) light-emitting diodes (QLEDs), QDs, which are responsible for the charge injection, charge transportation, and especially exciton recombination, play a significant role in QLEDs. With the crucial advances made… read more here.
Keywords: improving performance; emitting diodes; charge injection; exciton quenching ... See more keywords
Does interfacial exciton quenching exist in high-performance quantum dot light-emitting diodes?
Sign Up to like & getrecommendations! Published in 2023 at "Nanoscale"
DOI: 10.1039/d2nr07119c
Abstract: In quantum dot light-emitting diodes (QLEDs), even seemingly with interfacial exciton quenching between quantum dots (QDs) and the electron transport layer (ETL) limiting the device efficiency, the internal quantum efficiency of such QLEDs approaches 100%.… read more here.
Keywords: high performance; exciton quenching; interfacial exciton; quantum dot ... See more keywords
Sub–turn-on exciton quenching due to molecular orientation and polarization in organic light-emitting devices
Sign Up to like & getrecommendations! Published in 2020 at "Science Advances"
DOI: 10.1126/sciadv.abb2659
Abstract: Spontaneous orientation polarization in OLEDs reduces efficiency but can be eliminated by heating during film deposition. The efficiency of organic light-emitting devices (OLEDs) is often limited by roll-off, where efficiency decreases with increasing bias. In… read more here.
Keywords: exciton quenching; orientation polarization; polarization; organic light ... See more keywords