Optical properties of composite structure based on ZnO microneedles and Alq3 thin film

Karbovnyk, Ivan; Sadoviy, B.; Turko, B.; Kostruba, А.; Luchechko, A.; Vasilyev, Vladimir; Serkiz, R.; Kulyk, Yu. О.; Klym, Halyna; Khanna, Pawan K.; Кухто, А. В.

doi:10.1007/s11082-021-03292-1

Cited by 4 publications

(2 citation statements)

References 49 publications

(42 reference statements)

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“…Its glass transition temperature is 172 °C. Due to the intrinsic behaviour of Alq3 in the polymorphic phase, it can be easily thermally deposited to form amorphous layers [25].…”

Section: Methodsmentioning

confidence: 99%

Tris(8-hydroxyquinoline)aluminium in a polymer matrix as an active layer for green OLED applications

2024

Opto-Electronics Review

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Tris(8-hydroxyquinoline)aluminium with poly(N-vinylcarbazole) (Alq3:PVK) or polystyrene sulfonate (Alq3:PSS) were deposited by spin-coating on glass and silicon substrates. SEM measurements show that relatively smooth thin films were obtained. Fourier transform infrared measurements were performed to confirm the composition of the samples. The optical properties of thin films containing Alq3:PVK and Alq3:PSS were characterised using absorption spectroscopy and spectroscopic ellipsometry. It was found that the absorption spectrum of Alq3:PVK is characterised by four bands, while for Alq3:PSS only three bands are visible. The photoluminescence of the studied thin layers shows a peak with a maximum at about 500 nm. Additionally, cyclic voltammetry of Alq3 is also presented. Theoretical density functional theory calculations provide the insight into the interaction and nature of Alq3:PVK and Alq3:PSS excited states. Finally, the organic light-emitting diode (OLED) structure based on Alq3:PVK was fabricated and showed strong electroluminescence with a green emission at 520 nm. The results of the device show that the ITO/PEDOT:PSS/Alq3:PVK/Ca/Al system can be useful for the production of low-cost OLEDs with Alq3:PVK as an active layer for future lighting applications.

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“…Its glass transition temperature is 172 °C. Due to the intrinsic behaviour of Alq3 in the polymorphic phase, it can be easily thermally deposited to form amorphous layers [25].…”

Section: Methodsmentioning

confidence: 99%

Tris(8-hydroxyquinoline)aluminium in a polymer matrix as an active layer for green OLED applications

2024

Opto-Electronics Review

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“…Among them, zinc oxide occupies a very special place. ZnO-based materials can be used as optoelectronic transducers, fluorescent materials, gas-sensor elements, and biological sensors, catalysts, X-ray, and gamma radiation detectors [46][47][48][49][50][51][52][53][54][55][56]. These applications of ZnO are usually considered for its crystalline wurtzite (WS) phase.…”

Section: Introductionmentioning

confidence: 99%

Ion-Track Template Synthesis and Characterization of ZnSeO3 Nanocrystals

et al. 2022

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ZnSeO3 nanocrystals with an orthorhombic structure were synthesized by electrochemical and chemical deposition into SiO2/Si ion-track template formed by 200 MeV Xe ion irradiation with the fluence of 107 ions/cm2. The lattice parameters determined by the X-ray diffraction and calculated by the CRYSTAL computer program package are very close to each other. It was found that ZnSeO3 has a direct band gap of 3.8 eV at the Γ-point. The photoluminescence excited by photons at 300 nm has a low intensity, arising mainly due to zinc and oxygen vacancies. Photoluminescence excited by photons with a wavelength of 300 nm has a very low intensity, presumably due to electronic transitions of zinc and oxygen vacancies.

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Luminescence polarization enhancement in Alq3/ZnO microdisks multilayer structures

et al. 2023

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Optical properties of composite structure based on ZnO microneedles and Alq3 thin film

Cited by 4 publications

References 49 publications

Tris(8-hydroxyquinoline)aluminium in a polymer matrix as an active layer for green OLED applications

Tris(8-hydroxyquinoline)aluminium in a polymer matrix as an active layer for green OLED applications

Ion-Track Template Synthesis and Characterization of ZnSeO3 Nanocrystals

Luminescence polarization enhancement in Alq3/ZnO microdisks multilayer structures

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