Improving color rendering index of top-emitting white OLEDs with single emitter by using microcavity effects

Wan, Minqiang; Zhu, Wenqing; Huang, Lu; Zhao, Yunping; Wang, Zixing; Li, Jun

doi:10.1016/j.orgel.2021.106381

Cited by 3 publications

(1 citation statement)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To achieve the requirements of the broadspectrum emission and thus producing white emission, various device architectures have been fabricated with single or multiple layers. [11][12][13] Among them, single emissive layer of ternary hybrids-based OLED, blending additional acceptor (or donor) in a binary donor/acceptor hybrid system, is an efficient device architecture to raise the spectral emission range and improve the device performance. The ternary hybrid systems based on conjugated polymers have been investigated intensively to fulfill higher performance than their binary hybrids.…”

Section: Introductionmentioning

confidence: 99%

Hybrid of Conjugated Polymers with Incorporation of Metal Oxide Nanocomposites for Improving Optoelectronic Properties

Al‐Asbahi

2023

Physica Status Solidi (a)

View full text Add to dashboard Cite

Herein, the incorporation of TiO2 nanoparticles (NPs), SiO2 NPs, and their nanocomposite (STNC) to enhance the optoelectronic properties of the hybrid of poly[9,9′‐di‐n‐octylfluorenyl‐2,7‐diyl] (F8), poly[2‐methoxy‐5(2‐ethylhexyl)‐1,4‐phenylenevinylene)] (MEH‐PPV), and poly[2‐methoxy‐5‐(3,7‐dimethyl‐octyloxy)‐1,4‐phenylenevinylene]‐end capped with dimethylphenyl (MDMO–PPV–DMP) are revealed. The tune of the donor (F8) conjugated length can be detected from the red shift in absorption spectra when TiO2 NPs and SiO2 NPs are added, as well as an increase in emission intensity of the donor. The addition of acceptors (MEH–PPV or MDMO–PPV–DMP) to the donor results in a new absorption peak at 510 nm, which increases when TiO2 NPs and SiO2 NPs or STNC are incorporated into the ternary hybrid. The incorporation of STNC into F8 is anticipated to reduce the donor energy bandgap and improve the energy transfer from F8 to both acceptors. Moreover, Förster resonance energy transfer (FRET) is improved in the ternary hybrid, as evidenced by enhanced emission spectra of the donor and both acceptors, increased broadness of photoluminescence excitation spectra, and shifting blue color toward white region. The ternary hybrid with STNC‐based organic light‐emitting diode shows superior current and turn‐on voltage compared to other devices, which is likely due to its superior FRET.

show abstract

Section: Introductionmentioning

confidence: 99%