Unknown

Dataset Information

0

The correlation between phase transition and photoluminescence properties of CsPbX3 (X= Cl, Br, I) perovskite nanocrystals.


ABSTRACT: We report a correlation between the structural phase transition of CsPbX3 (X=Cl, Br, I) nanocrystals (NCs) and their temperature dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL). In constrast to CsPbBr3 and CsPbI3 NCs which exhibited a continuous blue shift in their bandgap with increasing temperature, the CsPbCl3 exhibited a blue shift until ~193 K, followed by a red shift until room temperature. We attribute this change from a blue to a red shift to a structural phase transtion in CsPbCl3, which also manifested in the temperature dependent TRPL. Notably, the exciton recombination lifetimes showed a similar reverse trend due to the phase transition in CsPbCl3, which has not been reported previously.

SUBMITTER: Yi J 

PROVIDER: S-EPMC8290899 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications

The correlation between phase transition and photoluminescence properties of CsPbX<sub>3</sub> (X= Cl, Br, I) perovskite nanocrystals.

Yi Jun J   Ge Xueying X   Liu Exian E   Cai Tong T   Zhao Chujun C   Wen Shuangchun S   Sanabria Hugo H   Chen Ou O   Rao Apparao M AM   Gao Jianbo J  

Nanoscale advances 20200706 10


We report a correlation between the structural phase transition of CsPbX<sub>3</sub> (X=Cl, Br, I) nanocrystals (NCs) and their temperature dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL). In constrast to CsPbBr<sub>3</sub> and CsPbI<sub>3</sub> NCs which exhibited a continuous blue shift in their bandgap with increasing temperature, the CsPbCl<sub>3</sub> exhibited a blue shift until ~193 K, followed by a red shift until room temperature. We attribute this change from  ...[more]

Similar Datasets

| S-EPMC9088719 | biostudies-literature
| S-EPMC10673478 | biostudies-literature
| S-EPMC9908866 | biostudies-literature
| S-EPMC6923794 | biostudies-literature
| S-EPMC5345893 | biostudies-literature
| S-EPMC7116093 | biostudies-literature
| S-EPMC7497717 | biostudies-literature
| S-EPMC9231175 | biostudies-literature
| S-EPMC6751700 | biostudies-literature