Uncovering the Role of Spacers in Advancing Portable, Low-Voltage OLEDs - Semiconductor Digest

Researcher manage to increase the EQE of blue ExUC-OLED devices 77 fold by adding a 3 nm wide spacer

Researchers from the University of Toyama have discovered that by adding a tiny 3-nanometer wide spacer between donor and acceptor layers in exciplex OLEDs improves the energy transfer and boosts the light emission. The researchers report that adding this spacer resulted in a 77-fold increase in EQE in exciplex upconversion OLEDs (ExUC-OLEDs), that usually suffer from poor energy transfer. ExUC-OLEDs can be driven at ultra-low voltages, which ma…

Uncovering the Role of Spacers in Advancing Portable, Low-Voltage OLEDs - Semiconductor Digest

Organic light-emitting diodes (OLEDs) have transformed display and lighting technology with their vivid colors, deep contrast, and energy efficiency. As demand grows for lighter, thinner, and more energy-saving devices—especially in wearables, foldables, and portable electronics—there’s increasing interest in OLEDs that can operate at lower voltages without compromising performance. A new type of OLEDs, known as exciplex upconversion OLEDs (ExUC…