Abstract：Low-dimensional semiconductors can be used for the fabrication of various optoelectronic devices due to their fascinating structures and physical properties. Herein, one-dimensional single-crystalline antimony sulfide (Sb2S3) rods with tunable lengths/diameters were synthesized via a hydrothermal approach followed by thermal treatment. Comprehensive structural characterizations and theoretical simulations revealed that annealing in H2/Ar can further remove the sulfur residue on the pristine Sb2S3 surface and improve the crystallinity of the rods with a reduced number of structural defects. The resultant high-quality Sb2S3 rods manifested impressive optoelectronic properties. As a proof-of-concept, a single Sb2S3 rod photodetector was fabricated and tested. The device manifested good response rate (5.10 A W−1), high external quantum efficiency (1130.7%), fast rise/decay time during on/off switching (4.03/4.08 ms), and a good detection rate (2.16 × 1010 Jones, herein “Jones” are the unit of detection rate by default). The photodetector also displayed a high switching ratio of 109.8 under 560 nm monochromatic light. The photodetection performance is superior or comparable to recently reported systems. Our results highlight the importance of the fine control of crystallinity, purity and defects (density) of semiconductors through rational post treatment for optoelectronic applications. The Sb2S3 rods may also find potential applications in other optoelectronic devices.

王洪恩履历：

王洪恩，男，1981年5月生，汉族，博士研究生毕业于香港城市大学物理与材料科学专业，现为云南师范大学物理与电子信息学院研究员，博士生导师。入选云南省“兴滇英才”计划、湖北省“楚天学者”计划、云南师范大学高层次人才，主要从事光电/光伏/储能/催化材料及的设计制备和器件研究。主持国家自然科学基金2项、云南省应用基础研究面上项目1项。在国内外学术期刊上发表论文120余篇，其中第一/通讯作者60多篇，被国内外同行专家引用6400余次, h指数54（谷歌学术）。目前担任Chinese Chemical Letters青年编委、Nanomaterials期刊Topical Advisory Board member, Frontier in Chemistry编委，Advanced Materials, Advanced Energy Materials, Advanced Functional Materials等50多个期刊论文评审人。

参考来源：https://wdxy.ynnu.edu.cn/info/1102/2120.htm