Fully Printed Halide Perovskite Light-Emitting Diodes with Silver Nanowire Electrodes
Printed organometal halide perovskite light-emitting diodes (LEDs) are reported that have indium tin oxide (ITO) or carbon nanotubes (CNTs) as the transparent anode, a printed composite film consisting of methylammonium lead tribromide (Br-Pero) and poly(ethylene oxide) (PEO) as the emissive layer, and printed silver nanowires as the cathode. The fabrication can be carried out in ambient air without humidity control. The devices on ITO/glass have a low turn-on voltage of 2.6 V, a maximum luminance intensity of 21014 cd m-2, and a maximum external quantum efficiency (EQE) of 1.1%, surpassing previous reported perovskite LEDs. The devices on CNTs/polymer were able to be strained to 5 mm radius of curvature without affecting device properties.
halide perovskites, printed electronics, light-emitting diodes, composites, flexible electronics, moisture
Bade, Sri Ganesh R., Junqiang Li, Xin Shan, Yichuan Ling, Yu Tian, Tristan Dilbeck, Tiglet Besara et al. "Fully printed halide perovskite light-emitting diodes with silver nanowire electrodes." ACS nano 10, no. 2 (2016): 1795-1801.