| 초록 |
All-inorganic perovskite cesium lead halide CsPbX3 (X = Cl, Br, or I) have attracted considerable attention for excellent optoelectronic applications including light-emitting devices, solar cells, lasers owing to remarkable performance, such as a high photoluminescence quantum yield, narrow emission line-widths (12 - 42nm), and wide color gamut. However, the toxicity of lead hinders their commercial applications in daily life. The strategy of doping holds great promise in modulating the materials properties of semiconductors. The partial substitution of lead ions with nonactivator metal ions has been extensively studied. So, instead of reducing the use of toxic metal Pb2+, we utilized doping with nontoxic Ni2+ substitutes. We report a strategy to address this issue by using divalent nickel instead of divalent lead to achieve efficient and stable perovskite light-emitting devices. We have synthesized fully inorganic cesium nickel lead halide perovskites via Hot-injection method. We expect that this work enables less Pb-containing Perovskite quantum dots to advance in perovskite light-emitting devices. |
