2012
DOI: 10.1063/1.3679549
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Organic light-emitting diodes for lighting: High color quality by controlling energy transfer processes in host-guest-systems

Abstract: Articles you may be interested inDistinguishing triplet energy transfer and trap-assisted recombination in multi-color organic light-emitting diode with an ultrathin phosphorescent emissive layer

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Cited by 50 publications
(33 citation statements)
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“…For the thin devices, turnon voltage and driving voltages close to that previously obtained for the former blue OLEDs were reached. When the thickness is increased, higher bias are required and a shift of the recombination zone at the interface between the emissive layer and MeOTPD is observed, as previously reported [50,51] (See Figure 4). …”
Section: Resultssupporting
confidence: 58%
“…For the thin devices, turnon voltage and driving voltages close to that previously obtained for the former blue OLEDs were reached. When the thickness is increased, higher bias are required and a shift of the recombination zone at the interface between the emissive layer and MeOTPD is observed, as previously reported [50,51] (See Figure 4). …”
Section: Resultssupporting
confidence: 58%
“…But excitons, which diffuse over the TCTA matrix reaching the NPB EBL will be quenched, resulting in a slightly lower external quantum efficiency. Besides, the position of the recombination zone can also lead to different external quantum efficiencies, as the radiative quantum yields of the host-guest-systems vary for the different colors [6].…”
Section: Discussionmentioning
confidence: 99%
“…[6] we reached very high color quality within a multilayer phosphorescent organic light-emitting diode. We used 2,2',7,7'-Tetrakis-(N,N-diphenylamino)-9,9'-spirobifluoren [Spiro-TAD] as electron blocking layer to achieve high luminous efficacy.…”
Section: Introductionmentioning
confidence: 98%
“…Especially the phosphorescent OLEDs, due to efficient use of the triplet excitons for electroluminescence 2 , could achieve extremely high luminance and efficiency for OLEDs commercialization. Commonly phosphorescent emitting materials were doped in suitable host materials, which could reduce the concentration quenching to receive high luminance and efficiency [3][4][5] .…”
Section: Introductionmentioning
confidence: 99%