Changes
/* Comparison of out coupling of waveguiding light in top-emission polyLED stack */
====Comparison of out coupling of waveguiding light in top-emission polyLED stack====
[[Image:Slide-oled.jpg|thumb|center| 500 px|]]
* Some light is reflected out of the OLED at stray angles in typical cases. By using a barrier material (form of microparticles) in the cathode layer, this light at stray angles hits the barrier material, and some of it is reflected back and guided out at the right angles, reducing light loss.
[[Image:Slide-oled1.jpg|thumb|center| 500 px|]]
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