大规模高质量超长 Sb2S3 纳米带。

High-quality ultralong Sb2S3 nanoribbons on large scale.

作者信息

Yu Y, Wang R H, Chen Q, Peng L-M

机构信息

Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Science, Beijing 100080, China.

出版信息

J Phys Chem B. 2005 Dec 15;109(49):23312-5. doi: 10.1021/jp055132z.

DOI:10.1021/jp055132z

PMID:16375299

Abstract

Large-scale, ultralong, single-crystalline Sb2S3 nanoribbons were prepared by directly reacting SbCl3 and Na2S2O3 solutions, without any organics used in the experiment. The nanoribbons were analyzed by a range of methods. The nanoribbons are usually several millimeters in length, typically 200-500 nm in width and 30-80 nm in thickness. The structure of the nanoribbons is determined to be of the orthorhombic phase. The growth mechanism of the nanoribbons was investigated based on high-resolution transmission electron microscopy observations. Optical absorption experiment shows that the nanoribbon is a semiconductor with a bandwidth Eg approximately 1.5 eV, near to the optimum for photovoltaic conversion, suggesting that Sb2S3 nanoribbons could be used in solar energy and photoelectronic applications.

摘要

通过直接使三氯化锑（SbCl3）溶液和硫代硫酸钠（Na2S2O3）溶液反应制备了大规模、超长的单晶 Sb2S3 纳米带，实验中未使用任何有机物。通过一系列方法对纳米带进行了分析。纳米带通常长度为几毫米，宽度典型为 200 - 500 纳米，厚度为 30 - 80 纳米。确定纳米带的结构为正交相。基于高分辨率透射电子显微镜观察研究了纳米带的生长机制。光吸收实验表明，纳米带是一种带宽 Eg 约为 1.5 电子伏特的半导体，接近光伏转换的最佳值，这表明 Sb2S3 纳米带可用于太阳能和光电子应用。