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(A) PL emission of CsPbBr3 QDs (synthesized at 150°C) in the forms of solution vs. solid thin film. Inset: Comparison of PL QYs of CsPbBr3 QDs in the forms of solution vs. solid film. (B) PL decay curves obtained from perovskite CsPbBr3 QDs at different emission wavelengths indicated by the color coded arrows in the insets. (C) PL decay curves of diluted hexane solution of perovskite CsPbBr3 QDs (black line) vs. films of the QDs layer (red line).
