izpis_h1_title_alt

Design of external microtextures for efficient light outcoupling in OLEDs with different preferential orientation of emission dipoles
ID Kovačič, Milan (Avtor)

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Izvleček
External light outcoupling structures provide a cost-effective and highly efficient solution for light extraction in organic light-emitting diodes. Among them, different microtextures, mainly optimized for devices with isotopically oriented emission dipoles, have been proposed as an efficient light extraction solution. In the paper, the outcoupling for a preferential orientation of emission dipoles is studied for the case of a red bottom-emitting organic light-emitting diode. Optical simulations are used to analyse the preferential orientation of dipoles in combination with three different textures, namely hexagonal array of sine-textures, three-sided pyramids, and random pyramids. It is shown that while there are minimal differences between the optimized textures, the highest external quantum efficiency of 51% is predicted by using the three-sided pyramid texture. Further improvements, by employing highly oriented dipole sources, are examined. In this case, the results show that the top outcoupling efficiencies can be achieved with the same texture shape and size, regardless of the preferred orientation of the emission dipoles. Using an optimized three-sided pyramid in combination with ideally parallel oriented dipoles, an efficiency of 62% is achievable. A detailed analysis of the optical situation inside the glass substrate, dominating external light outcoupling, is presented. Depicted results and their analysis offer a simplified further research and development of external light extraction for organic light-emitting devices with highly oriented dipole emission sources.

Jezik:Angleški jezik
Ključne besede:organic light emitting diodes, OLED, outcoupling, ray tracing, optical modelling
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FE - Fakulteta za elektrotehniko
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Datum objave:01.01.2022
Leto izida:2022
Št. strani:Str. 1-13
Številčenje:iss. 2, e141542
PID:20.500.12556/RUL-142383 Povezava se odpre v novem oknu
UDK:621.383.51
ISSN pri članku:1896-3757
DOI:10.24425/opelre.2022.141542 Povezava se odpre v novem oknu
COBISS.SI-ID:108555011 Povezava se odpre v novem oknu
Datum objave v RUL:04.11.2022
Število ogledov:351
Število prenosov:27
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Opto-electronics review
Skrajšan naslov:Opto-Electron. Rev.
Založnik:Stowarzyszenie Elektryków Polskich
ISSN:1896-3757
COBISS.SI-ID:513715737 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:20.05.2022

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:organske svetleče diode, OLED, izstop svetlobe, sledenje žarkom, optično modeliranje

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0415
Naslov:Fotovoltaika in elektronika

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-1727
Naslov:Napredno modeliranje in karakterizacija visokoučinkovitih sončnih celic in fotonapetostnih modulov

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