Fabrication of Flexible White Light Emitting Diodes from Photoluminescent Polymer Materials with Excellent Color Quality.

This study developed flexible light-emitting diodes (LEDs) with warm white and neutral white light. A simple UV flip-chip sticking process was adopted for the pumping source and combined with polymer and quantum dot (QD) films technology to yield white light. The polymer-blended flexible LEDs exhibited higher luminous efficiency than the QD-blended flexible LEDs. Moreover, the polymer-blended LEDs achieved excellent color rendering index values (Ra = 96 and R9 = 96), with high reliability, demonstrating high suitability for future wearable and biomedical applications.