Abstract

We report an improved light extraction in all-inorganic perovskite light-emitting devices (PeLEDs) by integrating a periodic corrugated nanostructure at the metallic cathode/organic interface. Nanoimprinting lithography was used to introduce the nanostructures onto the surface of the electron transport layer directly to avoid influencing the morphology and crystallinity of the perovskite film underneath. The trapped energy at the metallic electrode has been successfully outcoupled by the excitation of the surface plasma polariton (SPP) modes induced by the periodic corrugations. The luminance and current efficiency of the periodically corrugated PeLED exhibit enhancements of 42% and 28%, respectively, compared to those of the planar PeLED. The finite-difference time-domain simulation was used to confirm the efficient outcoupling of the SPP modes.

© 2020 Optical Society of America

Improved performance of pure red perovskite light-emitting devices based on CsPb(Br_1-xI_x)₃ with variable content of iodine and bromine

Shuang Guo, Yue-Feng Liu, Yu-Shan Liu, Jing Feng, and Hong-Bo Sun
Opt. Lett. 45(10) 2724-2727 (2020)

Microscale gratings patterned in perovskite films to promote the electron-optical conversion efficiency of perovskite light-emitting diodes

Guolong Li, Jing Qin, Yunzheng Wang, Yinggang Wu, Mengyao Li, and Jiamei Chen
Appl. Opt. 61(1) 35-40 (2022)

Efficient all-inorganic red perovskite light-emitting diodes with dual-interface-modified perovskites by vapor deposition

Shuang Guo, He-Fu Liu, and Yue-Feng Liu
Opt. Lett. 47(11) 2694-2697 (2022)

Enhanced efficiency of all-inorganic perovskite light-emitting diodes by using F4-TCNQ-doped PTAA as a hole-transport layer

Yu-Shan Liu, Shuang Guo, Jing Feng, Yue-Feng Liu, Yan-Gang Bi, Da Yin, Xu-Lin Zhang, and Hong-Bo Sun
Opt. Lett. 44(19) 4817-4820 (2019)

Highly flexible organic–inorganic hybrid perovskite light-emitting devices based on an ultrathin Au electrode

Yu-Shan Liu, Shuang Guo, Fang-Shun Yi, Jing Feng, and Hong-Bo Sun
Opt. Lett. 43(22) 5524-5527 (2018)