Efficient Tandem White OLED/LEC Hybrid Devices.

Luo, D., Hou, M.-C., Wang, K.-Y., Chang, C.-H., Liu, S.-W., Lu, C.-W. and Su, H.-C. (2023),

Adv. Mater. Technol., 8: 2300563. https://doi.org/10.1002/admt.202300563

The research presents a tandem white OLED/LEC hybrid device, combining a red OLED and a blue LEC, which simplifies fabrication compared to multi-layered OLEDs. The device includes a charge-generating layer (CGL) that not only links the two, but also improves carrier balance, leading to an external quantum efficiency (EQE) of 21.53%. Efficiency jumps to 37.88% when using a diffusive substrate. This demonstrates a simpler yet highly efficient structure, offering promising potential for cost-effective lighting solutions.

How Setfos was used

To clarify the relationship between the recombination zone position and the optical mode distribution for Device B, Device R, and Device T. The optical simulation software Setfos was employed as the analysis tool as was the optical mode distribution of the devices.