Enhanced Light Outcoupling from OLEDs Fabricated on Novel Low-Cost Patterned Plastic Substrates of Varying Periodicity

Objectives OLEDs (ISU) Micro-patterned PET/CAB Substrate (h ~320 nm; a ~7.8 m) Achieved EQE ~33% for white OLEDs; x2 enhancement vs  Demonstrate that phosphorescent OLEDs fabricated on a low-cost light extraction PC Substrates (pattern height: h <200 nm; pitch a ~750 or ~410 nm) OLED on flat PET/CAB. substrate can approach DOE’s SSL 2020 target of ηout = 70%. Achieved EQE ~56.5% for green PhOLEDs + blue & white OLEDs enhancement.