fig4
Figure 4. Optical properties of CsPbBr3 (pristine) and Sn:DH. (A) UV-vis absorption spectra and (B) PL spectra of Sn:DH as-prepared and after 24 h. (C) TRPL curves of pristine and Sn:DH. (D) Time-dependent PLQY of pristine and Sn:DH over 144 h. DH: Dopamine hydrochloride; PL: photoluminescence; TRPL: time-resolved PL; PLQY: photoluminescence quantum yield; UV-vis: ultraviolet-visible.
