Phosphonic Acid Stabilized Colloidal CsPbX3 (X=Br, I) Perovskite Nanocrystals and Their Surface Chemistry

被引：54

作者：

Koh, Weon-kyu ^{[1
]}

Park, Sungjun ^{[2
]}

Ham, Yongnam ^{[2
]}

机构：

[1] Samsung Adv Inst Technol, Device Lab, Suwon 16676, Gyeonggi Do, South Korea

[2] Samsung Adv Inst Technol, Analyt Engn Grp, Suwon 16676, Gyeonggi Do, South Korea

来源：

CHEMISTRYSELECT | 2016年 / 1卷 / 13期

关键词：

colloids; mass spectrometry; perovskite; phosphonic acid ligand; surface chemistry; QUANTUM DOTS; PERFORMANCE; SOLUBILITY; EMISSION;

D O I：

10.1002/slct.201600809

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate the improved stability of colloidal CsPbX3 (X=Br, I) perovskite nanocrystals (NCs) using the phosphonic acid ligand. Photoluminescence spectra indicated that the phosphonic acid-based CsPbX3 perovskite NCs had stable optical properties in solution, and inductively coupled plasma-mass spectrometry provided a deeper insight of their decomposition mechanism and the surface chemistry of CsPbX3 NCs. With the aid of liquid chromatography-mass spectrometry, we show more detail in the ligand binding of NC solutions, suggesting that strong binding of phosphonic acid ligands is the key to stabilize the NC structures, probably with both metal and halide ions on the NC surface.

引用

页码：3479 / 3482

页数：4

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