All-solution-processed blue small molecular organic light-emitting diodes with multilayer device structure
Autor: | Hsin-Fei Meng, Jia-Da You, Feng-Wen Yen, I-Feng Lin, Shin Rong Tseng, Sheng-fu Horng |
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Rok vydání: | 2009 |
Předmět: |
Materials science
Dopant Annealing (metallurgy) business.industry Ultra-high vacuum General Chemistry engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials Biomaterials Coating Materials Chemistry engineering OLED Optoelectronics Electrical and Electronic Engineering Thin film business Solution process Diode |
Zdroj: | Organic Electronics. 10:1610-1614 |
ISSN: | 1566-1199 |
Popis: | All-solution-processed multilayer blue small molecular organic light-emitting diodes are fabricated by blade coating method. Fluorescent blue host,1-(7-(9,9′-bianthracen-10-yl)- 9,9-dioctyl-9H-fluoren-2-yl)pyrene, and blue dopant, 4,4′-(1E,1′E)-2,2′-(naphthalene-2,6-diyl)bis(ethene-2,1-diyl)bis(N,N-bis(4-hexylphenyl)aniline), are used to achieve good solubility and pinhole-free thin film by solution process. The multilayer device structure with hole/electron transport layer is achieved by blade coating method without the dissolution problem between layers. The efficiency of the all-solution-processed device is 4.8 cd/A at 1200 cd/m2, close to that by thermal deposition in high vacuum chamber. The device performance is optimized with the annealing temperature of TPBi layer at 50 °C. |
Databáze: | OpenAIRE |
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