Nonlinear Optical Properties of Colloidal CH₃NH₃PbBr₃ and CsPbBr₃ Quantum Dots: A Comparison Study Using Z‐Scan Technique

The comparison between organic–inorganic CH3NH3PbBr3 quantum dots and all inorganic halide perovskite CsPbBr3 quantum dots allows to understand the structural difference and corresponding optical properties. Using Z-scan measurements, it is revealed that colloidal CH3NH3PbBr3 exhibits enhanced two-photon absorption properties compared to those of CsPbBr3 quantum dots due to their structural difference. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.