Prospects of Colloidal Copper Chalcogenide Nanocrystals

摘要: Over the past few years, colloidal copper chalcogenide nanocrystals (NCs) have emerged as promising alternatives to conventional Cd and Pb NCs. Owing their wide size, shape, composition tunability, Cu NCs hold great promise for several applications, such photovoltaics, lighting displays, biomedical imaging. They also offer characteristics that are unparalleled by NCs, plasmonic properties. Moreover, low toxicity, potentially lower costs, excellent stability. This makes them attractive materials large-scale deployment of inexpensive, sustainable, environmentally benign solution-processed devices. Nevertheless, synthesis especially ternary quaternary compositions, has yet reach same level mastery available prototypical based review provides a concise overview this rapidly advancing field, sketching state art highlighting key challenges. We discuss recent developments in size-, shape-, composition-controlled chalcogenides, with emphasis strategies circumvent limitations arising from need precisely balance reactivities multiple precursors synthesizing compositions. In respect, we show topotactic cation-exchange reactions alternative route complex multinary hetero-NCs, which not attainable routes. The properties potential applications hetero-NCs addressed.