Inverted top-emitting organic light-emitting diodes using sputter-deposited anodes

Autor:	Thomas Dobbertin, M. Kroeger, D. Schneider, H. Neuner, D. Metzdorf, Dirk Heithecker, H.-H. Johannes, Wolfgang Kowalsky, Eike Becker
Rok vydání:	2003
Předmět:	Materials science Physics and Astronomy (miscellaneous) business.industry Sputter deposition Anode Indium tin oxide Pentacene Organic semiconductor chemistry.chemical_compound chemistry Sputtering OLED Optoelectronics business Diode
Zdroj:	Applied Physics Letters. 82:284-286
ISSN:	1077-3118 0003-6951
Popis:	We demonstrate vacuum-sublimed topside-emitting inverted organic light-emitting diodes (IOLEDs) employing low-power radio-frequency magnetron sputter-deposited indium tin oxide (ITO) anodes. The device introduces a two-step sputtering sequence to reduce damage incurred by the sputtering process, paired with a buffer- and hole-transporting material Pentacene. Systematic optimization of the organic growth sequence focused on device performance characterized by current and luminous efficiencies, suggest the incorporation of rather thick Pentacene layers. The optimized thickness is obtained as a trade-off between light absorption and protective properties of Pentacene. The optically and electrically undoped organic multilayer devices capped with 90-nm ITO exhibit high current efficiencies of 3.9 cd/A at a raised luminance level of 1.500 cd/m2, combined with luminous efficiencies of 0.7 lm/W. The inverted configuration allows for integration of organic light-emitting diodes (OLEDs) with preferentially used n-c...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::63c5164c153c02cedb5be900ff5ae0fc https://doi.org/10.1063/1.1535743 Zobrazit plný text záznamu