High binding ability ligand controlled formation of CsPbX3 (X = Cl/Br, Br, I) perovskite nanocrystals with high quantum yields and enhanced stability

Xia Hongbo; Wu Suli; Li Lu; Zhang Shufen

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High binding ability ligand controlled formation of CsPbX3 (X = Cl/Br, Br, I) perovskite nanocrystals with high quantum yields and enhanced stability

机译：高结合能力配体的CSPBX3（X = Cl / Br，Br，I）具有高量子产率的钙钛矿纳米晶体，增强稳定性

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CsPbX3 NCs with both high photoluminescence quantum yields (PLQYs) and enhanced stability have been obtained by using high binding ability ligands. As a result, the CsPbI3 NCs prepared using palmitic acid and oleylamine as ligands have high PLQY (up to 92%), and the PLQYs of CsPbX3 perovskite NCs can be sustained for one month with a slight decrease. Impressively, the presence of palmitic acid and stearic acid can dramatically improve the chemical stability of CsPbX3 NCs. Importantly, H-1 NMR measurements indicate that much more palmitic acid remained on the surface of CsPbX3 NCs than oleic acid after purification using solvent, suggesting the higher binding ability of palmitic acid than oleic acid. Finally, the fabricated perovskite NCs were used as luminescent inks and phosphors of white light emitting diodes.

机译：通过使用高结合能力配体获得了具有高光致发光量子产率（PLQYS）和增强的稳定性的CSPBX3 NC。结果，使用棕榈酸和油胺作为配体制备的CSPBI3 NC具有高plqy（高达92％），并且CSPBX3钙钛矿NCS的PLQYS可以略有下降一个月。令人印象深刻地，棕榈酸和硬脂酸的存在可以显着提高CSPBX3 NC的化学稳定性。重要的是，H-1 NMR测量表明，使用溶剂纯化后，H-1 NMR测量表明在CSPBX3 NCS的表面上保持更多的棕榈酸，这表明棕榈酸的结合能力高于油酸。最后，制造的钙钛矿NCS用作白光发光二极管的发光油墨和磷光体。

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《RSC Advances》 |2018年第63期|共8页
作者
Xia Hongbo; Wu Suli; Li Lu; Zhang Shufen;
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Dalian Univ Technol State Key Lab Fine Chem Dalian Peoples R China;

Dalian Univ Technol State Key Lab Fine Chem Dalian Peoples R China;

Qingdao Univ Sci &

Technol Qingdao Peoples R China;

Dalian Univ Technol State Key Lab Fine Chem Dalian Peoples R China;

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正文语种 eng
中图分类化学;
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1. High binding ability ligand controlled formation of CsPbX3 (X = Cl/Br, Br, I) perovskite nanocrystals with high quantum yields and enhanced stability [J] . Xia Hongbo, Wu Suli, Li Lu, RSC Advances . 2018,第63期

机译：高结合能力配体的CSPBX3（X = Cl / Br，Br，I）具有高量子产率的钙钛矿纳米晶体，增强稳定性
2. Synergetic Effect of Postsynthetic Water Treatment on the Enhanced Photoluminescence and Stability of CsPbX3 (X = Cl, Br, I) Perovskite Nanocrystals [J] . Liu Ying, Li Fei, Liu Quanlin, Chemistry of Materials: A Publication of the American Chemistry Society . 2018,第19期

机译：后金属水平对CSPBX3（X = Cl，Br，I）钙钛矿纳米晶体增强光致发光和稳定性的协同作用
3. CsPbX3 (X = Br, I) perovskite quantum dot embedded low-melting phosphosilicate glasses: controllable crystallization, thermal stability and tunable emissions [J] . Chen Daqin, Yuan Shuo, Chen Xiao, Journal of Materials Chemistry, C. materials for optical and electronic devices . 2018,第25期

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4. Inverted CsPbI_2Br Perovskite Solar Cells with Enhanced Efficiency and Stability in Ambient Atmosphere via Formamidinium Incorporation [C] . Mengmeng Chen, Razey S. Shahrir, Gaurav Kapil, 応用物理学会春季学術講演会;応用物理学会 . -1

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5. Systematic Studies on the Mixed-Valence States of Perovskite-Type Transition-Metal ComplexesCs[2]Au[2]X[6](X=Cl,Br,I) [D] . Kitagawa, Hiroshi 1992

机译：钙钛矿型过渡金属配合物Cs [2] Au [2] X [6]（X = Cl，Br，I）混合价态的系统研究
6. Highly Controllable Synthesis and DFT Calculations of Double/Triple-Halide CsPbX3 (X = Cl Br I) Perovskite Quantum Dots: Application to Light-Emitting Diodes [O] . Xinyue Lao, Xiyu Li, Hans Ågren, 2019

机译：双/三卤化物CsPbX3（X = ClBrI）钙钛矿量子点的高度可控制的合成和DFT计算：在发光二极管中的应用
7. High binding ability ligand controlled formation of CsPbX3 (X = Cl/Br, Br, I) perovskite nanocrystals with high quantum yields and enhanced stability [O] . Hongbo Xia, Suli Wu, Lu Li, 2018

机译：高结合能力配体的CSPBX3（X = Cl / Br，Br，I）具有高量子产率的钙钛矿纳米晶体，增强稳定性
8. Threshold Energies for the Reactions OH- + CH3X yields CH30H + X- (X = Cl, Br)Measured By Tandem Mass Spectrometry: Deprotonation Energies (acidities) of CH3Cl and CH3Br [R] . Hierl, P. M., Henchman, M. J., Paulson, J. F. 1992

机译：反应的阈值能量OH- + CH3X产生CH30H + X-（X = Cl，Br）通过串联质谱测量：CH3Cl和CH3Br的去质子化能量（酸度）

High binding ability ligand controlled formation of CsPbX3 (X = Cl/Br, Br, I) perovskite nanocrystals with high quantum yields and enhanced stability

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