Figure 15.

(a) Schematic architecture of vertical electroluminescent device. (b) PL spectrum of colloidal 2D FAPbBr₃perovskite [284]. Copyright 2017 American Chemical Society. (c) SEM images of EL device showed that CsPbBr₃ nanometer plates grown in gas phase were bribed on two ITO electrodes. Azo tilt image of nanometer plate (upper left image). (d) Under the condition of positive bias voltage V = +8 V, EL spectrogram of CsPbBr₃ nanometer plate EL device of the upper electrode was obtained [285]. Copyright 2017 World Scientific Publishing Co. Pte Ltd. (e) The 3D diagram of KBOC with KO bonds. (f) KBOC crystal spectrum achieved from UV–vis–IR transmittance. The inset exhibits the transmittance versus λ curve between 165 and 300 nm [286]. Copyright 2011 American Chemical Society.