Effect of morphology of CsPbBr3 nanocrystals on their optical properties

被引：1

作者：

Wu, Haizhen ^{[1
]}

Mo, Zhaojun ^{[1
]}

Lu, Qiujie ^{[1
]}

Li, Hailin ^{[1
]}

Zheng, Zhexuan ^{[1
]}

Li, Lan ^{[1
]}

机构：

[1] Tianjin Univ Technol, Key Lab Optoelect Mat & Devices Tianjin, Minist Educ, Sch Mat Sci & Engn,Inst Mat Phys,Key Lab Display, Tianjin 300384, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CsPbBr3; nanocrystals; morphological transformation; crystal phase conversion; optical properties; LIGAND-MEDIATED SYNTHESIS; PEROVSKITE NANOCRYSTALS; TRANSFORMATION; EVOLUTION;

D O I：

10.1088/2053-1591/ab49ef

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the morphology of CsPbBr3 nanocrystals (NCs) is controlled by changing the molar ratios of oleylamine (OAm) and propionic acid (PA). The relative ratio plays an important role in the evolution of morphology. The CsPbBr3 NCs exhibit monoclinic morphology when the molar ratio of OAm/PA is equivalent. When the molar ratio of OAm/PA deviates from 1:1, CsPbBr3 NCs tend to grow in a sheet shape. The nanosheets with 200 similar to 500 nm and thickness similar to 15 nm were synthesized as the molar ratio of OAm/PA (1:4). The PL intensity decreases with the increase of size. The fluorescence lifetime shows a trend of gradual shortening.

引用

页数：7

共 26 条

[21] Effect of Ligand Structure on the Optical and Electronic Properties of Nanocrystalline PbSe Films [J].