Abstract
A practical correlation between selective reflectance of the semitransparent electrode and the color coordinates of light emitting from the organic light-emitting diode (OLED) has been presented in this paper. OLED technology has a great potential to substitute other technologies for lighting and display applications. For full-color displays, use of color filters is the most acceptable technique to convert a white light into primary colors (red, green, and blue). In a microcavity design, it is possible to control the emission color of an OLED by incorporating an active layer in between two metal mirrors. A careful design of a microcavity makes possible the realization of mixed colors in a single OLED structure. In this work, a metal microcavity has been designed with an organic stack, sandwiched between two metal mirrors, a fully reflective mirror-aluminum (Al) and semitransparent metal mirror-silver (Ag). The Commission International de l’Eclairage (CIE) color coordinates of a blue fluorescent (460 nm) OLED was tuned from (1.85, 1.54) to (2.36, 2.63) by selective reflectance.
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