We report on a white hybrid light-emitting device realized by combining red emission from CdSe/ZnS quantum dots (QDs), green emission from a phosphorescent organic complex tris[2-4(4-toltyl)phenylpyridine]iridium [Ir(mppy)(3)], and blue emission from a fluorescent organic emitter 2,2('),7,7(')-tetrakis(2,2-diphenylvinyl)spiro-9,9(')-bifluorene. Energy transfer processes from the organic components to the QDs have been analyzed versus the Ir(mppy)(3) concentration in order to optimize the device performances. A maximum external quantum efficiency of 2.1%, corresponding to a power efficiency of 2.2 lm/W at 13 mA/cm(2), and a color rendering

White light-emitting devices based on the combined emission from red CdSe/ZnS quantum dots, green phosphorescent, and blue fluorescent organic molecules

MAZZEO, MARCO;GIGLI, Giuseppe
2009-01-01

Abstract

We report on a white hybrid light-emitting device realized by combining red emission from CdSe/ZnS quantum dots (QDs), green emission from a phosphorescent organic complex tris[2-4(4-toltyl)phenylpyridine]iridium [Ir(mppy)(3)], and blue emission from a fluorescent organic emitter 2,2('),7,7(')-tetrakis(2,2-diphenylvinyl)spiro-9,9(')-bifluorene. Energy transfer processes from the organic components to the QDs have been analyzed versus the Ir(mppy)(3) concentration in order to optimize the device performances. A maximum external quantum efficiency of 2.1%, corresponding to a power efficiency of 2.2 lm/W at 13 mA/cm(2), and a color rendering
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/370848
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