Fig. 5: Characteristics of blue PeLEDs. | Nature Communications

Fig. 5: Characteristics of blue PeLEDs.

From: Dimension control of in situ fabricated CsPbClBr2 nanocrystal films toward efficient blue light-emitting diodes

Fig. 5

a Energy level diagram of the EL devices. b Cross-sectional TEM image of the multi-layered EL device. c EL spectra under forward biases of 3.6, 4.4, and 5.2 V. d Current density–luminance–voltage characteristic of the best-performance device. e EQE–voltage characteristic of the best-performance device. f Histogram of maximum EQEs from 28 devices.

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