Luminance Efficiency Enhancement in Organic Light-Emitting Devices Utilizing 4,7-Diphenyl-1,10-phenanthroline/aluminum tris(8-hydroxyquinoline) Multiple Heterostructures Acting as an Electron Transport Layer

Autor:	You-Hyun Kim, You Young Jin, J. H. Seo, T. W. Kim, H. S. Bang, D. C. Choo
Rok vydání:	2011
Předmět:	Chemical substance Materials science business.industry Heterojunction General Chemistry Condensed Matter Physics Luminance Cathode law.invention law OLED Optoelectronics General Materials Science business Science technology and society Current density Layer (electronics)
Zdroj:	Molecular Crystals and Liquid Crystals. 551:40-46
ISSN:	1563-5287 1542-1406
DOI:	10.1080/15421406.2011.600129
Popis:	The electrical and optical properties of organic light-emitting devices (OLEDs) with three periods of 4,7-diphenyl-1,10-phenanthroline (BPhen)/aluminum tris(8-hydroxyquinolate) (Alq3) multiple heterostructures acting as an electron transport layer (ETL) were investigated. While the leakage current of OLEDs with multiple heterostructures was smaller than that of OLEDs without multiple heterostructures, the luminance efficiency was larger than that of OLEDs without multiple heterostructures. The BPhen layers in the multiple heterostructures blocked holes from the emitting layer (EML) to the ETL, and they enhanced the electron injection from the cathode to the EML, resulting in an increase in the luminance efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ff6cde37c9e7c536ed09d62e61bbf32e https://doi.org/10.1080/15421406.2011.600129 Zobrazit plný text záznamu