Abstract
Optical characteristics of microcavity organic light-emitting devices (OLEDs) having two metal mirrors are examined. Analyses show that a high-reflection back mirror and a low-loss high-reflection exit mirror are essential for such microcavity devices to obtain luminance enhancement relative to conventional noncavity devices. An enhancement of 2 in cd/A efficiencies in comparison with noncavity devices can be generally achieved for microcavity OLEDs using two metal mirrors as long as the exit mirror has high enough reflection and low enough absorption loss.
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