Three-terminal light-emitting device with adjustable emission color

Cherpak, Vladyslav; Gassmann, Andrea; Stakhira, Pavlo; Volyniuk, Dmytro; Gražulevičius, Juozas V.; Michaleviciute, A.; Tomkevičienė, Aušra; Barylo, Grygoriy; Seggern, Heinz von

doi:10.1016/j.orgel.2014.04.002

Cited by 14 publications

(11 citation statements)

References 15 publications

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“…Although the PVK:POT2T blend exhibits the lowest ∆E ST (Table 2), Dev2 shows an EQE of only 1.92%. This may be attributed to the small difference between the triplet state energy (2.96 eV) of the PVK [18] and the CT state (2.399 eV; Table 2) of the PVK:POT2T exciplex, leading to the exciton in the CT state going to the triplet state of the donor. The donors have higher triplet energy levels than the singlet energy of the exciplex state of blended films, leading to confinement of the CT state of the exciplex in the donor/POT2T blends.…”

Section: Resultsmentioning

confidence: 99%

“…Some of the research efforts kept designing and synthesizing new donor and acceptor Polymers 2021, 13, 1668 2 of 9 molecules to find the better combination. However, many studies using commercially available materials, including donors and acceptors, to form exciplexes with the effective RISC property were reported [12,13,[15][16][17][18][19]. On the other hand, all of the abovementioned studies used vacuum thermal evaporation (VTE) to form high-quality organic films for the higher device performance.…”

Section: Introductionmentioning

confidence: 99%

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Thermally Activated Delayed Fluorescence in Commercially Available Materials for Solution-Process Exciplex OLEDs

et al. 2021

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Organic light-emitting diodes (OLEDs) have developed rapidly in recent years. Thermally activated delayed fluorescent (TADF) molecules open a path to increase exciton collection efficiency from 25% to 100%, and the solution process provides an alternative technology to achieve lower cost OLEDs more easily. To develop commercial materials as exciplex hosts for high-performance and solution-processed OLEDs, we attempted to use 4,4′-cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine (TAPC), poly(9-vinylcarbazole) (PVK), N,N′-Di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine (NPB), and poly(N,N'-bis-4-butylphenyl-N,N'-bisphenyl)benzidine (Poly-TPD) as the donors and 2,4,6-tris[3-(diphenylphosphinyl)phenyl]-1,3,5-triazine (POT2T) as the acceptor to obtain the TADF effect. All donors and the acceptor were purchased from chemical suppliers. Our work shows that excellent TADF properties and high-efficiency exciplex OLEDs with low turn-on voltage and high luminance can be achieved with a simple combination of commercial materials.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermally Activated Delayed Fluorescence in Commercially Available Materials for Solution-Process Exciplex OLEDs

et al. 2021

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“…The short-wavelength emission band observed at 470 nm is characteristic of the pure THCA singlet emission (Fig. 3, the curve 2) [7,14].…”

Section: Resultsmentioning

confidence: 96%

“…This causes high-energy component in the EL spectrum of the device A (Fig. 5), and the resulting spectrum is superposition between EL spectrum of THCA of exciton nature [7,14] and exciplex EL at the THCA/Bphen interface (Fig. 5).…”

Section: Resultsmentioning

confidence: 99%

Essential electro-optical differences of exciplex type OLEDs based on a starburst carbazole derivative prepared by layer-by-layer and codeposition processes

et al. 2015

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“…The development of such devices is largely determined by the efficiency of software used in the study of electrooptical parameters of organic semiconductors. Currently, various software tools for computer modeling of OLED structures are used [1,2]. However, among the significant number of software products should be noted the electronic circuits simulator with open source SPICE (Simulation Program with Integrated Circuit Emphasis).…”

Section: Introduction and Problem Statementmentioning

confidence: 99%

Modeling of organic light emitting structures

Barylo

Holiyka

Helzhynskyi

et al. 2020

Phys. Chem. Solid St.

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The paper has been shown the results of the study of the parameters of organic light-emitting structures based on the SPICE (Simulation Program with Integrated Circuit Emphasis) model studies. A SPICE model of diode structure has been developed, which is implemented in the form of a substitution scheme based on the basic components of the simulator. This model can be extended by introducing additional components of the substitution scheme, which provides higher accuracy in representing the structure specifics. Graphical results of researches of the model of OLED structure at the change of internal parameters have been presented. The obtained data well represent the parameters of real structures and are characterized by a fairly effective adaptation to the experimental data of specific samples.

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Three-terminal light-emitting device with adjustable emission color

Cited by 14 publications

References 15 publications

Thermally Activated Delayed Fluorescence in Commercially Available Materials for Solution-Process Exciplex OLEDs

Thermally Activated Delayed Fluorescence in Commercially Available Materials for Solution-Process Exciplex OLEDs

Essential electro-optical differences of exciplex type OLEDs based on a starburst carbazole derivative prepared by layer-by-layer and codeposition processes

Modeling of organic light emitting structures

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