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

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 (Egs) were calculated according to transmittance spectra. The Eg 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.

Multifunctional Molecule Modification toward Efficient Carbon‐Based All‐Inorganic CsPbIBr2 Perovskite Solar Cells

“…[1,2] Nowadays, the latest certified value reaches 25.5%; [3] extensive researches have been carried out for excellent stability and considerable manufacturing cost of PSCs aiming at practical applications. [4][5][6][7][8] Despite its impressive performance, the stability of organic-inorganic hybrid PSCs remains the main challenge. Because of the hygroscopicity and volatility passivate the surface traps effectively at the perovskite interface.…”

Robust, Transparent Hybrid Thin Films of Phase-Change Material Sb2S3 Prepared by Electrophoretic Deposition

“…It shows lower toxicity compared to its Se and Te equivalents, is composed of inexpensive, non-rare elements, and is rapidly synthesizable as nanoparticles via a number of different methods, including solid-state methods such as mechanical ball-milling, and wet-chemical methods such as hot injection. [34][35][36] It is also worth noting, that ongoing research exists on non-chalcogenide families showing similar phase transitions with significant optical and resistive contrast. Vanadium dioxide is an example of a material which shows a low transition temperature (68 °C) and sub-nanosecond switching speeds.…”

“…37 However, compared to the heretofore defined PCMs, the heating-induced phase transition of VO2 is reversible, rendering it unsuited for non-volatile applications. 8 Thin film PCMs are an interesting target geometry with applications for non-volatile memory storage, 38 photovoltaics, 35 as well as nanoscale displays. 39 Intuitively, the most interesting feature of PCMs is their capacity to switch between phases rapidly and permanently (until switched back).…”

“…However, current studies have revealed the potential it has for nanophotonic devices and in integrated photonic circuits. , Onset of crystallization occurs at a relatively low temperature ∼250 °C, leading to low processing temperatures, commonly between 250 and 300 °C, , and a low melting point of 550 °C, allowing for stability in both phases, important for data retention, while also being accessible by applicable heating methods, such as laser diode heating. It shows lower toxicity compared with its Se and Te equivalents; is composed of inexpensive, nonrare elements; and is rapidly synthesizable as nanoparticles via a number of different methods, including solid-state methods such as mechanical ball-milling and wet-chemical methods such as hot injection. − …”

Tantalum disulfide quantum dots: preparation, structure, and properties

“…Zhang et al [18] prepared monodispersed TaS 2 nanodots by a facile topdown method. QDs [19][20][21][22] has attracted wide interest worldwide in recent years, but TaS 2 QDs are rarely reported. Therefore, facile methods are still in need to prepare industry applicable TaS 2 QDs with narrow size distribution and good dispersion.…”