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Bright red YCl3-promoted CsPbI3 perovskite nanorods towards efficient light-emitting diode by Pan, Gencai; Bai, Xue; Shen, Xinyu; Wang, Lei; Mao, Yanli; Chen, Xu; Xu, Wen; Shao, He; Zhou, Donglei; Dong, Biao; Xu, Lin; Hu, Junhua; Song, Hongwei is a Engineering article available to read on EtoBox.
What is Bright red YCl3-promoted CsPbI3 perovskite nanorods towards efficient light-emitting diode about?
One-dimensional (1D) CsPbI 3 nanorods (NRs) possess the suitable bandgap, extinction coefficient, long exciton diffusion radius and directed conductive channel, which make them advantageous for numerous optoelectronic devices. However, the direct synthesis of high-quality CsPbI 3 NRs remains a challenge. Here, we develop a direct and facile synthetic approach to prepare the CsPbI 3 NRs by YCl 3 promotion. The YCl 3 is not only the inducement of anisotropic growth of NCs, but also the source of passivator for improving the stability of NCs. Because of an effective YCl 3 passivation, the efficient red emitting CsPbI 3 NCs with photoluminescence quantum yield (PLQY) of 97% was achieved. More importantly, the YCl 3 promoted CsPbI 3 NRs with small aspect ratio of ~3.2 exhibit the PLQY of 84%, the highest value obtained from the red perovskite NRs. The fluorescence anisotropy of 0.184 mmol-YCl 3 promoted CsPbI 3 NRs is 0.38, and the rotational diffusion time τ rot = 1000 ns. The analysis on fluorescence anisotropy of the CsPbI 3 perovskite NRs proves that the size in length and width is consistent with the result measured by TEM images of as-prepared perovskite NRs. Meanwhile, conductivi
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It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Pan, Gencai; Bai, Xue; Shen, Xinyu; Wang, Lei; Mao, Yanli; Chen, Xu; Xu, Wen; Shao, He; Zhou, Donglei; Dong, Biao; Xu, Lin; Hu, Junhua; Song, Hongwei
- Publisher
- Elsevier ; Elsevier BV (ISSN 2211-2855)
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)