Single-Crystalline Colloidal Quasi-2D Tin Telluride

被引：11

作者：

Li, Fu ^{[1
]}

Fu, Jiecai ^{[2
]}

Torche, Abderrezak ^{[1
]}

Kull, Sascha ^{[1
]}

Kornowski, Andreas ^{[1
]}

Lesyuk, Rostyslav ^{[1
,3
,4
,5
]}

Bester, Gabriel ^{[1
]}

Klinke, Christian ^{[1
,3
,6
]}

机构：

[1] Univ Hamburg, Inst Phys Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany

[2] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

[3] Univ Rostock, Inst Phys, Albert Einstein Str 23, D-18059 Rostock, Germany

[4] NAS Ukraine, Pidstryhach Inst Appl Problems Mech & Math, Naukowa Str 3b, UA-79060 Lvov, Ukraine

[5] Lviv Polytech Natl Univ, Dept Photon, Bandery Str 12, UA-79000 Lvov, Ukraine

[6] Swansea Univ, Dept Chem, Singleton Pk, Swansea SA2 8PP, W Glam, Wales

来源：

ADVANCED MATERIALS INTERFACES | 2020年 / 7卷 / 12期

基金：

欧洲研究理事会;

关键词：

2D nanocrystals; colloidal synthesis; narrow-gap semiconductors; SnTe; tin telluride; SNTE; NANOSTRUCTURES; NANOCRYSTALS; NANOSHEETS; INSULATOR;

D O I：

10.1002/admi.202000410

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tin telluride is a narrow-gap semiconductor with promising properties for infrared (IR) optical applications and topological insulators. A convenient colloidal synthesis of quasi-2D SnTe nanocrystals through the hot-injection method in a nonpolar solvent is reported. By introducing the halide alkane 1-bromotetradecane as well as oleic acid and trioctylphosphine, the thickness of 2D SnTe nanostripes can be tuned down to 30 nm, while the lateral dimensional can reach 6 mu m. The obtained SnTe nanostripes are single crystalline with a rock-salt crystal structure. The absorption spectra demonstrate pronounced absorption features in the IR range revealing the effect of quantum confinement in such structures.

引用

页数：7

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