硒化锡纳米晶：合成、结构、光学性质和表面化学。

SnSe nanocrystals: synthesis, structure, optical properties, and surface chemistry.

机构信息

Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA.

出版信息

J Am Chem Soc. 2010 Jul 21;132(28):9519-21. doi: 10.1021/ja1013745.

PMID:20578741

Abstract

The colloidal synthesis of SnSe nanoparticles is accomplished through the injection of bis[bis(trimethylsilyl)amino]tin(II) into hot trioctylphosphine:selenium in the presence of oleylamine. Through the manipulation of reaction temperature particles are grown with the average diameter reliably tuned to 4-10 nm. Quantum confinement is examined by establishing a relationship between particle size and band gap while the in depth growth dynamics are illuminated through UV-vis-NIR spectroscopy. Surface chemistry effects are explored, including the demonstration of useful ligand exchanges and the development of routes toward anisotropic particle growth. Finally, transient current-voltage properties of SnSe nanocrystal films in the dark and light are examined.

摘要

通过将双[双（三甲基甲硅烷基）氨基]锡（II）注入热三辛基膦：硒中，并在油胺存在的情况下，实现了 SnSe 纳米粒子的胶体合成。通过控制反应温度，可以生长出平均直径可靠地调节至 4-10nm 的颗粒。通过建立粒径与能带隙之间的关系来研究量子限制，同时通过紫外-可见-近红外光谱研究深入的生长动力学。还探索了表面化学效应，包括证明有用的配体交换和开发各向异性颗粒生长的途径。最后，研究了黑暗和光照下 SnSe 纳米晶薄膜的瞬态电流-电压特性。