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Registration Number

0225U004234, (0124U003833) , R & D reports

Title

Low-dimensional structures for enhancing the luminescence quantum yield in highly efficient phosphorescent light-emitting devices

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Оптимізація та виготовлення функціональних шарів низькорозмірної гетероструктури.

Head

Stakhira Pavlo Yo., Доктор технічних наук

Registration Date

26-11-2025

Organization

Lviv Polytechnic National University

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The main goal of the project is the study and development of 2D dimensional nanolayer heterostructures using organic emission materials based on new RTP emitters and plasmonic metal nanoparticles with further application in the design of highly efficient OLEDs.

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During the reporting period, the authors of the project developed an algorithm and numerical implementation for calculating multilayer quantum OLED structures by solving the stationary Schrödinger equation in impulse representation. The corresponding software was developed. It was established that an increase in the refractive index of the organic semiconductor matrix leads to an increase in the scattering cross section amplitude, but does not affect the shape of the spectrum. The sensitivity of the optical response of Au nanoparticles to changes in the refractive index of transport layers was determined. The absorption and luminescence spectra of tryptophan, glycine, cysteine and methionine molecules were calculated taking into account spin-orbital interaction using the TD DFT method, and the important role of the low triplet T1 states of these molecules was demonstrated for the first time. With the aim of synthesising new quinoline derivatives for OLED technology, the Scraup-Debner-Miller reaction mechanism was improved to obtain quinoline and its derivatives from pyridine and acrolein derivatives. Several models of molecule collisions, their heat of formation, nuclear vibration frequencies, charge changes on atoms, and polarisation were calculated. Knowledge about the influence of quantum well width and barrier width on discrete energy levels and wave function localisation in the quantum well system of multilayer light-emitting structures based on organic semiconductors has been expanded.

Product Description

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Volodymyr M. Fityo
Yaremchuk Iryna Ya.
Bulavinets Tetiana O.
Minaieva Valentyna O.
Kuzyk Nataliia I.
Lilia Deva

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2025-11-26