Fig. 1. The morphology and structure characterization of the CsPbBr₃ nanocrystals

Fig. 2. The fluorescence (solid lines) and absorption (dashed lines) spectra of the CsPbBr₃ nanocrystals

Fig. 3. The absorption and fluorescence (inset) spectra of CsPbBr₃ (black solid lines) and CsPbBr₃−NCA complexes (colored dashed lines)

Fig. 4. The TRPL spectra of CsPbBr₃ (black solid lines) and CsPbBr₃−NCA complexes (colored solid lines) using CW laser (the spot diameter: 200 μm; repetition frequency: 1 MHz). The gray solid line is the fitted curve