Articles and Reviews
Here is a collection of OLED/QLED/PeLED optical simulation and design. Hopefully, they can inspire your optical simulation.
Reviews
Recent advances in light outcoupling from QLEDs
Research to enhance the optical outcoupling of QLEDs is of profound importance for achieving high efficiency and brightness. This Perspective discusses recent cornerstones and major challenges in outcoupling technologies for QLEDs, particularly those based on microcavity structures.
Articles
Highly Efficient Top-Emitting QLEDs
Top-emitting (TE) quantum-dot light-emitting diodes (QLEDs) can exhibit higher light outcoupling efficiency (OCE) compared to bottom-emitting (BE) QLEDs due to the eliminated substrate mode and enhanced microcavity effect. In this study, TE QLEDs with an OCE of over 45% are realized by simultaneously optimizing the thicknesses of both indium-zinc-oxide (IZO) phase tuning layers and IZO top transparent electrodes.
Full-color QLEDs based on microcavities
In this study, we utilize the spectral narrowing phenomenon of microcavities to fabricate the red, green and blue quantum dot light-emitting diodes (QLEDs) with a single QD layer. This work theoretically analyses the role of microcavities in adjusting the emitting color of QLEDs. By enhanced microcavity and properly chosen spacer thickness, the spectral selectivity shifts, realizing the full-color-tunability of QLEDs.
Top-emitting QLEDs with negligible angular color shift
Top-emitting quantum-dot light-emitting diodes (QLEDs) suffer from poor stability, low light outcoupling, and non-negligible viewing-angle dependence because, for QLEDs with non-red emission, the electrically optimum device structure is incompatible with single-mode optical microcavity.
Stable and efficient tandem QLEDs
In this study, we developed a new tandem structure with optimal electrical and optical performance to simultaneously improve the efficiency and stability of tandem QLEDs… Optically, upon development of a top-emitting structure and optimization of the cavity length guided by a theoretical simulation, a maximum light extraction efficiency is achieved.
Microcavity top-emission PeLEDs
The efficiencies of perovskite LEDs are largely limited by the low light out-coupling efficiency. Here, we show that high-efficiency perovskite LEDs with a high external quantum efficiency of 20.2% and an ultrahigh radiant exitance up to 114.9 mW cm−2 can be achieved by employing the microcavity effect to enhance light extraction. The enhanced microcavity effect and light out-coupling efficiency are confirmed by the study of angle-dependent emission profiles.