硒化铅核壳量子点的合成与应用研究进展

硒化铅(PbSe)量子点具有宽红外光谱调控范围、高荧光量子产率和可溶液加工等特点,成为一类重要的红外材料体系。与广泛研究的PbS量子点相比,PbSe量子点在空气中容易氧化,从而严重破坏其光电特性,制约了其应用的发展。壳层的包覆是有效提升PbSe量子点光学特性和化学稳定性的策略之一,是推动PbSe量子点应用发展的材料研究方向。本文综述了PbSe核壳量子点的合成及其在光电探测、太阳能电池、激光器和光催化等领域的应用研究进展,希望能够为国内研究者开展相关研究提供参考。

PbSe Based Core/Shell Quantum Dots:from Colloidal Synthesis to Optoelectronic Application

PbSe quantum dots have attracted a great number of attentions due to their tunable bandgap in a wide range,high photoluminescence quantum yields and low-cost solution process,thus enabling them the potential as key functional materials in infrared region.However,PbSe quantum dots are sensitive to air,resulting in the decrease or even destroy of their optical properties.Overcoating of PbSe quantum dots by a suitable shell,yielding PbSe-based core/shell quantum dots,have been successfully demonstrated to be an effective strategy to improve the chemical stability and optical properties.In this mini-review paper,we summarized the progress of colloidal synthesis methods of PbSe-based core/shell quantum dots and their optoelectronic applications in photodetectors,solar cells,lasers and photocatalysis.We hope the review can attract the attention from both of the industrial and academic researchers.