Benefiting from the excellent properties such as high photoluminescence quantum yield(PLQY), wide gamut range,and narrow emission linewidth, as well as low-temperature processability, metal halide perovskite quantum d...Benefiting from the excellent properties such as high photoluminescence quantum yield(PLQY), wide gamut range,and narrow emission linewidth, as well as low-temperature processability, metal halide perovskite quantum dots(QDs)have attracted wide attention from researchers. Despite tremendous progress has been made during the past several years,the commercialization of perovskite QDs-based LEDs(PeQLEDs) is still plagued by the instability. The ion migration in halide perovskites is recognized as the key factor causing the performance degradation of PeQLEDs. In this review, the elements species of ion migration, the effects of ion migration on device performance and stability, and effective strategies to hinder/mitigate ion migration in PeQLEDs are successively discussed. Finally, the forward insights on the future research are highlighted.展开更多
对于 Pr1- SrxMnO3 体系 x = 0 和 0.3 以及 MnO2 在 O K 边进行了 X 射线吸收谱实验研究。在 x = 0 的 xPrMnO3 端点化合物进行空穴掺杂使 x = 0.3,当体系成为 Pr0.7Sr0.3MnO3 时,实验结果显示其在 Mn 3d 轨道上的电子数目...对于 Pr1- SrxMnO3 体系 x = 0 和 0.3 以及 MnO2 在 O K 边进行了 X 射线吸收谱实验研究。在 x = 0 的 xPrMnO3 端点化合物进行空穴掺杂使 x = 0.3,当体系成为 Pr0.7Sr0.3MnO3 时,实验结果显示其在 Mn 3d 轨道上的电子数目并不随空穴掺杂减少,反而有增加的趋势。对该结果基于 O 2p 与 Mn 3d 轨道的杂化和共价键特性进行了探讨。展开更多
基金supported by the Natural Natural Science Foundation of China (Grant Nos.61904081 and 51672132)the Natural Science Foundation of Jiangsu Province,China (Grant No.BK20190449)the Postdoctoral Research Funding Program of Jiangsu Province,China (Grant No.2020Z144)。
文摘Benefiting from the excellent properties such as high photoluminescence quantum yield(PLQY), wide gamut range,and narrow emission linewidth, as well as low-temperature processability, metal halide perovskite quantum dots(QDs)have attracted wide attention from researchers. Despite tremendous progress has been made during the past several years,the commercialization of perovskite QDs-based LEDs(PeQLEDs) is still plagued by the instability. The ion migration in halide perovskites is recognized as the key factor causing the performance degradation of PeQLEDs. In this review, the elements species of ion migration, the effects of ion migration on device performance and stability, and effective strategies to hinder/mitigate ion migration in PeQLEDs are successively discussed. Finally, the forward insights on the future research are highlighted.
文摘对于 Pr1- SrxMnO3 体系 x = 0 和 0.3 以及 MnO2 在 O K 边进行了 X 射线吸收谱实验研究。在 x = 0 的 xPrMnO3 端点化合物进行空穴掺杂使 x = 0.3,当体系成为 Pr0.7Sr0.3MnO3 时,实验结果显示其在 Mn 3d 轨道上的电子数目并不随空穴掺杂减少,反而有增加的趋势。对该结果基于 O 2p 与 Mn 3d 轨道的杂化和共价键特性进行了探讨。
