エコデバイスとしてのシクロデキストリンポリマー層を含むフィルム型有機EL素子の作製と評価 －TPD/Alq3系－

Abstract

In this study, we present findings on the production and evaluation of organic light-emitting diode (OLED) devices featuring cyclodextrin polymer layers. These devices were composed of N, N'-Bis(3-methylphenyl)-N, N'-bis(phenyl)-benzidine (TPD), cyclodextrin polymers (α-, β-, γ-CDP), Tris-(8-hydroxyquinoline) aluminum (Alq3), LiF, and Al, deposited onto ITO PEN films substrates. With CDP present, the OLEDs emitted green light due to the fluorescence of TPD and Alq3, achieving a peak brightness of 3444 cd m-2. Our investigation suggests that the enlargement of the cavity size, weakening the encapsulation effect, facilitates the extraction of fluorescence. Moreover, we verified that the existence of CDP induces structural alterations at the interface, impacting the pathways of energy transfer during the excited state process of OLEDs. These discoveries offer significant insights into the design and potential applications of OLEDs, spanning various sectors including space technology and the evolving landscape of organic electronics.departmental bulletin pape