Effect of an assistant dopant on the vibrational satellites of a phosphorescent emitter: Application to solution–processed single–layer white organic light–emitting diodes

Gutiérrez–Llorente, Araceli

doi:10.1016/j.orgel.2020.105786

Cited by 5 publications

(1 citation statement)

References 58 publications

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“…Regarding photoemission devices, mixing CPs presented light tunability and polychrome emissions. As white light emission is characteristically accomplished by mingling the three foremost colors (red, green, and blue), at least two emissive materials are coated in a multilayer structure [ 5 , 6 , 7 ] or classified as a single layer by doping (or mixing) [ 8 , 9 , 10 ]. The existence of various fluorophores tips into one of the following intermolecular interactions in CPs mixing [ 11 ]: (i) Ground states interaction to form a new state identified as a ground-state complex, that affects the emission and absorption spectrum; (ii) Exciplex and excimer formation subsequently photo-excitation; in this situation the interaction occurs between ground state and the excited state of the molecules; (iii) Energy transfer amongst altered fluorophores.…”

Section: Introductionmentioning

confidence: 99%

Conjugated Polymers-Based Ternary Hybrid toward Unique Photophysical Properties

et al. 2022

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The improvement of optical and optoelectronic properties of the individual poly [2-methoxy-5- (2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene]–End capped with Dimethyl phenyl (OC1C10–PPV–DMP), and poly (9,9′-di- n -octylfluorenyl-2,7-diyl) (F8) was revealed by blending them in ternary hybrid with optimal ratio (F8/2 wt.% MEH-PPV/2 wt.% OC1C10–PPV–DMP). All individual and optimal ternary solutions were prepared via the solution-blending method followed by depositing them onto glass and ITO substrates using spin-coating technique. The semi-crystalline phase of the ternary hybrid and the strong mixing between the conjugated polymers were evidenced by observing the X-ray diffraction patterns that related to F8 into the hybrid diffractogram. The optical and optoelectronic properties of all prepared thin films were investigated in terms of absorption and emission spectra, Commission International d′Eclairage (CIE) coordinates, and current–voltage (I-V) characterizations. Emission peaks at the entire range of visible spectrum can be revealed from the ternary hybrid of the three individual conjugated polymers, producing white emission as evidenced from the emission spectrum and CIE coordinates of the hybrid. Among all fabricated organic light-emitting diodes (OLEDs) devices, the ternary hybrid-based-OLED revealed the best performance in terms of current and turn-on voltage.

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