Abstract
We demonstrate the combined effects of a microcavity structure and light-recycling filters (LRFs) on the forward electrical efficiency of phosphor-converted white organic light-emitting diodes (pc-WOLEDs). The introduction of a single pair of low- and high-index layers (SiO(2)/TiO(2)) improves the blue emission from blue OLED and the insertion of blue-passing and yellow-reflecting LRFs enhances the forward yellow emission from the YAG:Ce(3+) phosphors layers. The enhancement of the luminous efficacy of the forward white emission is 1.92 times that of a conventional pc-WOLED with color coordinates of (0.34, 0.34) and a correlated color temperature of about 4800 K.
Highlights
Organic light-emitting diodes (OLEDs) have attracted much attention because of their desirable characteristics, including low-power consumption, low driving voltage, wide viewing angle, and fast response [1,2,3]
We demonstrate the combined effects of a microcavity structure and light-recycling filters (LRFs) on the forward electrical efficiency of phosphor-converted white organic light-emitting diodes
Our pc-white OLEDs (WOLEDs) provides an acceptable viewing-angular tolerance
Summary
Organic light-emitting diodes (OLEDs) have attracted much attention because of their desirable characteristics, including low-power consumption, low driving voltage, wide viewing angle, and fast response [1,2,3].
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