Extended Data Fig. 2: Nanosurface reconstruction of the blue-emitting CsPbBr3 QDs. | Nature Nanotechnology

Extended Data Fig. 2: Nanosurface reconstruction of the blue-emitting CsPbBr3 QDs.

From: Nanosurface-reconstructed perovskite for highly efficient and stable active-matrix light-emitting diode display

Extended Data Fig. 2: Nanosurface reconstruction of the blue-emitting CsPbBr3 QDs.The alternative text for this image may have been generated using AI.

a–c, Absorption spectra (a), PL spectra (b), and time-resolved PL decay curves (c) of the purified CsPbBr3 QDs in solution. d–f, TEM images of the OA-BQDs (d), DSPA-BQDs (e), and NR-BQDs (f), respectively. The scale bar is 50 nm. Insets show the corresponding size distribution histograms of the QDs. g, The time-dependent PL intensity trajectory of the QD films at 100 oC. h, Typical current density–voltage–luminance (J-V-L) and i, EQE–luminance (EQE-L) characteristics of the PeLEDs based on OA-BQDs, DSPA-BQDs, and NR-BQDs, respectively. The results show successful nanosurface reconstruction of the ultrasmall CsPbBr3 QDs with the improved optoelectronic properties utilizing the diisooctylphosphinic acid-mediated synthesis combined with hydrobromic acid etching.

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