The stability of lead halide perovskite quantum dots （PQDs） was improved by embedding them in carboxybenzene microcrystals. The resulting needle-shaped mixed microcrystals preserved the strong photoluminescence of t...The stability of lead halide perovskite quantum dots （PQDs） was improved by embedding them in carboxybenzene microcrystals. The resulting needle-shaped mixed microcrystals preserved the strong photoluminescence of the PQDs. Compared with previously reported polystyrene-encapsulated PQDs, the carboxybenzene crystals were robust and protected the dots from moisture and photodegradation. The enhanced stability was attributed to the tight matrix of carboxybenzene microcrystals, which protected the PQDs from moisture. This versatile strategy protected various QDs, including all-inorganic PQDs and chalcogenide QDs （e.g., CdSe/ZnS QDs and CuInS/ZnS QDs）. It provides a facile and versatile method of protecting PQDs and may enable applications in solid-state systems with high color quality requirements such as displays, lasers, and light emitting diodes.展开更多
文摘The stability of lead halide perovskite quantum dots （PQDs） was improved by embedding them in carboxybenzene microcrystals. The resulting needle-shaped mixed microcrystals preserved the strong photoluminescence of the PQDs. Compared with previously reported polystyrene-encapsulated PQDs, the carboxybenzene crystals were robust and protected the dots from moisture and photodegradation. The enhanced stability was attributed to the tight matrix of carboxybenzene microcrystals, which protected the PQDs from moisture. This versatile strategy protected various QDs, including all-inorganic PQDs and chalcogenide QDs （e.g., CdSe/ZnS QDs and CuInS/ZnS QDs）. It provides a facile and versatile method of protecting PQDs and may enable applications in solid-state systems with high color quality requirements such as displays, lasers, and light emitting diodes.
基金supported by the Science and Technology Foundation of Shanghai(19JC1412402 and 20JC1415600)the National Natural Science Foundation of China(62074111)+2 种基金Shanghai Municipal Science and Technology Major Project(2021SHZDZX0100)Shanghai Municipal Commission of Science and Technology Project(19511132101)the support of the Fundamental Research Funds for the Central Universities。
