Data and code availability
All data in the manuscript and supplemental information are available from the lead contact on request.
Metal halide perovskite nanocrystals (NCs) have attracted tremendous attention due to their unique crystal structure and promising optoelectronic properties. Particularly, layered double perovskite (LDP) NCs with enriched compositional space and highly tunable properties are important for both fundamental studies and technological applications. Here, we report the colloidal synthesis of a series of Cs4Cd1−xCuxSb2Cl12 (0 ≤ x ≤ 1) LDP NCs with controlled metal compositions. Insights on the composition-structure-property relationships of the LDP NCs are explored through both material characterizations and theoretical calculations. Photogenerated charge carrier dynamics of the LDP NCs are investigated using ultrafast spectroscopic techniques. We show that such colloidal LDP NCs can be solution processed into a high-speed photodetector, demonstrating their potential in applications such as optical, photonic, and optoelectronic devices.
All data in the manuscript and supplemental information are available from the lead contact on request.
Lead contact