CdZnSe@ZnSe colloidal alloy quantum dots for high-efficiency all-inorganic perovskite solar cells.

We present here the successful fabrication of core–shell constructed CdZnSe@ZnSe colloidal alloy quantum dots with tunable optical properties using a hot-injection method, demonstrating great potential in photovoltaic devices. Upon employment as charge extraction materials in all-inorganic perovskite solar cells, an enhanced power conversion efficiency up to 8.65% has been achieved arising from the boosted charge transfer dynamics. [ABSTRACT FROM AUTHOR]