Red Phosphorescent Organic Light-Emitting Device Using the Mixed Host of mCP and Bebq2in the Emissive Layer

Autor:	Ji Geun Jang, Hyun Jin Ji
Rok vydání:	2013
Předmět:	business.industry Chemistry Doping Analytical chemistry chemistry.chemical_element General Chemistry Condensed Matter Physics Luminance Wavelength Optoelectronics General Materials Science Quantum efficiency Beryllium business Phosphorescence Layer (electronics) Host (network)
Zdroj:	Molecular Crystals and Liquid Crystals. 584:78-86
ISSN:	1563-5287 1542-1406
DOI:	10.1080/15421406.2013.849450
Popis:	New red light-emitting phosphorescent devices using the mixed host of N,N′-dicarbazolyl-3,5-benzene [mCP] and bis(10-hydroxy-benzo[h]quinolinato)beryllium [Bebq2] doped with 5 vol.% RP411(red phosphorescent dye from SFC Co.) in the emissive layer were fabricated and evaluated according to the mixture ratio of x in a host of mCP(1−x) Bebq2(x). Among the fabricated devices, the maximum quantum efficiency was obtained in the device with in a host of x = 0.75 and the highest luminance at a given voltage was obtained in the device with a in a host of x = 0.25. On the other hand, the product of luminance and quantum efficiency showed the best characteristics in the device with a host of mCP(0.5) Bebq2(0.5). The peak wavelength in the electroluminescence spectra and color coordinates on the Commission Internationale de I’Eclairage(CIE) chart of the fabricated devices with x ≥ 0.25 in a host of mCP(1−x) Bebq2(x) were 627 nm and (0.66, 0.34), respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d626497f56d1c967333afcc93e623a6e https://doi.org/10.1080/15421406.2013.849450 Zobrazit plný text záznamu