V
Vladyslav Cherpak
Researcher at Lviv Polytechnic
Publications - 49
Citations - 1236
Vladyslav Cherpak is an academic researcher from Lviv Polytechnic. The author has contributed to research in topics: OLED & Carbazole. The author has an hindex of 20, co-authored 47 publications receiving 1007 citations. Previous affiliations of Vladyslav Cherpak include Kent State University & University of Colorado Boulder.
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Journal ArticleDOI
An Ambipolar BODIPY Derivative for a White Exciplex OLED and Cholesteric Liquid Crystal Laser toward Multifunctional Devices
Marian Chapran,Enrico Angioni,Neil J. Findlay,Benjamin Breig,Vladyslav Cherpak,Pavlo Stakhira,Tell Tuttle,Dmytro Volyniuk,Juozas V. Grazulevicius,Yuriy A. Nastishin,Oleg D. Lavrentovich,Peter J. Skabara +11 more
TL;DR: A new interface engineering method is demonstrated for the preparation of an efficient white organic light-emitting diode (WOLED) by embedding an ultrathin layer of the novel ambipolar red emissive compound 4,4-difluoro-2,6-di(4-hexylthiopen-2-yl)-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza
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Mixing of Phosphorescent and Exciplex Emission in Efficient Organic Electroluminescent Devices
Vladyslav Cherpak,Pavlo Stakhira,Boris F. Minaev,Gleb V. Baryshnikov,Evgeniy Stromylo,Igor Helzhynskyy,Marian Chapran,Dmytro Volyniuk,Zenon Hotra,Zenon Hotra,Asta Dabuliene,Ausra Tomkeviciene,Lesya Voznyak,Juozas V. Grazulevicius +13 more
TL;DR: A yellow organic light-emitting diode (OLED) based on the star-shaped donor compound tri(9-hexylcarbazol-3-yl)amine, which provides formation of the interface exciplexes with the iridium(III) bis[4,6-difluorophenyl]-pyridinato-N,C2']picolinate (FIrpic) and exhibits a high external quantum efficiency.
Journal ArticleDOI
Efficient “Warm-White” OLEDs Based on the Phosphorescent bis-Cyclometalated iridium(III) Complex
Vladyslav Cherpak,Pavlo Stakhira,Boris F. Minaev,Gleb V. Baryshnikov,Evgeniy Stromylo,Igor Helzhynskyy,Marian Chapran,Dmytro Volyniuk,Daiva Tomkute-Luksiene,Tadas Malinauskas,Vytautas Getautis,Ausra Tomkeviciene,Jurate Simokaitiene,Juozas V. Grazulevicius +13 more
TL;DR: In this article, it was shown that the electroluminescence spectra of the fabricated devices are more extended into the visible region compared with the photolumine-spectra of both component materials, which can be attributed to the phosphorescent emission of the low energy exciplex formed at the interface of the emissive layers.
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A single emitting layer white OLED based on exciplex interface emission
Enrico Angioni,Marian Chapran,Khrystyna Ivaniuk,Nataliya Kostiv,Vladyslav Cherpak,Pavlo Stakhira,Algirdas Lazauskas,Sigitas Tamulevičius,Dmytro Volyniuk,Neil J. Findlay,Tell Tuttle,Juozas V. Grazulevicius,Peter J. Skabara +12 more
TL;DR: In this paper, a triaryl molecule based on a benzene-benzothiadiazole/benzene core has been applied in a WOLED device, which gives white light with CIE coordinates of (0.38, 0.45) and a colour temperature of 4500 K.
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Highly Efficient Blue Organic Light-Emitting Diodes Based on Intermolecular Triplet–Singlet Energy Transfer
Dmytro Volyniuk,Dmytro Volyniuk,Vladyslav Cherpak,Pavlo Stakhira,Boris F. Minaev,Gleb V. Baryshnikov,Maryan Chapran,Ausra Tomkeviciene,Jonas Keruckas,Juozas V. Grazulevicius +9 more
TL;DR: In this article, the authors used diphenilamino-substituted carbazoles as guest compounds for the preparation of highly efficient blue organic light-emitting diodes based on the phenomenon of delayed fluorescence.