Synthesis of Water-Soluble Antimony Sulfide Quantum Dots and Their Photoelectric Properties

Nanoscale Research Letters

Jiang Zhu¹  Xuelian Yan¹  Jiang Cheng¹ 

[1] Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, College of Materials and Chemical Engineering, Chongqing University of Arts and Sciences;

关键词: Sb2S3;    Water-soluble quantum dot;    Near-infrared emission;    Photovoltaic material;   

DOI  :  10.1186/s11671-017-2421-1

来源: DOAJ

【 摘 要 】

Abstract Antimony sulfide (Sb2S3) has been applied in photoelectric devices for a long time. However, there was lack of information about Sb2S3 quantum dots (QDs) because of the synthesis difficulties. To fill this vacancy, water-soluble Sb2S3 QDs were prepared by hot injection using hexadecyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) mixture as anionic-cationic surfactant, alkanol amide (DEA) as stabilizer, and ethylenediaminetetraacetic acid (EDTA) as dispersant. Photoelectric properties including absorbing and emission were characterized by UV-Vis-IR spectrophotometer and photoluminescence (PL) spectroscopic technique. An intensive PL emission at 880 nm was found, indicating Sb2S3 QDs have good prospects in near-infrared LED and near-infrared laser application. Sb2S3 QD thin films were prepared by self-assembly growth and then annealed in argon or selenium vapor. Their band gaps (E g s) were calculated according to transmittance spectra. The E g of Sb2S3 QD thin film has been found to be tunable from 1.82 to 1.09 eV via annealing or selenylation, demonstrating the good prospects in photovoltaic application.

【 授权许可】

Unknown