Efficient blue light-emitting diodes based on quantum-confined bromide perovskite nanostructures


The emergence of inorganic–organic hybrid perovskites, a unique class of solution-processable crystalline semiconductors, provides new opportunities for large-area, low-cost and colour-saturated light-emitting diodes (LEDs) ideal for display and solid-state lighting applications1. However, the performance of blue perovskite LEDs (PeLEDs)2,3,4,5,6,7,8,9,10,11 is far inferior to that of their near-infrared, red and green counterparts12,13,14,15,16,17,18,19, strongly limiting the practicality of the PeLED technology. Here, we demonstrate blue PeLEDs emitting at 483 nm with colour coordinates of (0.094, 0.184) and operating with a peak external quantum efficiency of up to 9.5% at a luminance of 54 cd m–2. The devices have a T50 lifetime of 250 s for an initial brightness of 100 cd m–2. The efficient blue electroluminescence originates from a structure of quantum-confined perovskite nanoparticles embedded within quasi-two-dimensional phases with higher bandgaps, prepared by an antisolvent processing scheme. Our work paves the way towards high-performance PeLEDs in the blue region.

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Fig. 1: Characteristics of blue PeLEDs.
Fig. 2: Structural characterizations of the perovskite films.
Fig. 3: Optical properties of the blue-emitting perovskite film.
Fig. 4: Impacts of the antisolvent treatment.
Fig. 5: Colour-tunable blue PeLEDs.

Data availability

The data that support the plots within this paper and other findings of this study are available from the corresponding author upon reasonable request.


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This work was financially supported by the National Key R&D Program of China (2016YFB0401600), the National Natural Science Foundation of China (51522209, 91833303, 51911530155, 91733302), the Fundamental Research Funds for the Central Universities (2017XZZX001-03A). D.D. and R.H.F acknowledge the Engineering and Physical Sciences Research Council (EPSRC) and Zhejiang University Education Foundation Global Partnership Fund for support. This research used resources of the Advanced Photon Source, a US Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under contract no. DE-AC02-06CH11357.

Author information

Y.J. and Y.L. conceived the idea and designed the experiments. Y.J. supervised the work. Y.L. and J.C. carried out the device fabrication and characterizations. Y.L., Q.Z., D.C., Z.Y. and H.Z. conducted the optical measurements. Z.H. synthesized the PBABr. K.D. and H.T. carried out the STEM and HRTEM characterizations. X.Z., L.W. and Y.R. conducted the GISAXS and GIWAXS measurements. Y.D. carried out the conductive AFM experiments. B.Z. and D.D. cross-checked the LED measurements. Y.J. and Y.L. wrote the first draft of the manuscript. J.W., D.D. and R.H.F. participated in data analysis and provided major revisions. All authors discussed the results and commented on the manuscript.

Correspondence to Yizheng Jin.

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Colour coordinates, lifetime data and structural information and images.

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Liu, Y., Cui, J., Du, K. et al. Efficient blue light-emitting diodes based on quantum-confined bromide perovskite nanostructures. Nat. Photonics 13, 760–764 (2019). https://doi.org/10.1038/s41566-019-0505-4

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