OLED panels produce soft diffuse light with essentially a Lambertian distribution that is inherently pleasing, but efficacy remains a challenge and elevated ambient temperature can drastically reduce lifetime.
DOE documents OLED photometric performance in Caliper report
by Commercial LED Lighting | Oct 31, 2016 | Architectural Lighting, Indoor Lighting, Industry News, LEDs & SSL Design, Manufacturing Services & Testing, OLEDs, Standards, Test Labs