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Fully Printed Halide Perovskite Light-Emitting Diodes with Silver Nanowire Electrodes
Sri Ganesh R Bade1,2, Junqiang Li1,2, Xin Shan1,2
1Department of Industrial and Manufacturing Engineering, High Performance Materials Institute, §Department of Chemical and Biomedical Engineering, #National High Magnetic Field Laboratory, and ⊗Department of Mechanical Engineering, Florida State University , Tallahassee Florida 32310, United States.
Abstract:
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.
