Fe2+ doped in CsPbCl3 perovskite nanocrystals: impact on the luminescence and magnetic properties. Issue 57 (16th October 2019)

• Record Type: Journal Article
• Authors: Hu, Yue; Zhang, Xinyue; Yang, Chaoqun; Li, Ji; Wang, Li
• Is Part Of: RSC advances. Volume 9:Issue 57(2019)
• Page Start: 33017
• Page End: 33022
• Publication Date: 2019-10-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra07069a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The CsPb1− x Fe x Cl3 NCs were synthesized and an appropriate amount of Fe 2+ doping can enhance PLQY and average PL lifetimes. Meanwhile, an obvious hysteresis behavior has been observed for the NCs. Abstract : All inorganic halide perovskite nanocrystals (NCs) have wider practical applications owing to their good properties, whereas the photoluminescence quantum yield (PLQY) of the purple emissive CsPbCl3 NCs is too low to apply in multi-color displays. In this study, earth-abundant Fe 2+ metal ions were successfully incorporated into the lattice of CsPbCl3 NCs with the partial replacement of the sites of Pb 2+ ions. The impacts of Fe 2+ ions on the luminescence and magnetic properties of CsPbCl3 NCs were studied using photoluminescence spectroscopy (PL), X-ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), and a vibrating sample magnetometer (VSM). CsPb1− x Fe x Cl3 NCs, with x = 0, 0.1, 0.2, and 0.3, were synthesized at 170 °C. It was found that an appropriate amount of Fe 2+ doping not only improved the homogeneity of the size of NCs, but also enhanced the PLQY and average PL lifetimes. An obvious hysteresis behavior was observed for the NCs, and there was a significant change in the saturation magnetization value with the increase in the Fe 2+ concentration.