Optimizing the Synthetic Conditions of “Green” Colloidal AgBiS2 Nanocrystals Using a Low-Cost Sulfur Source

Abstract

Colloidal AgBiS2 nanocrystals (NCs) have attracted increasing attention as a near–infrared absorbent materials with non–toxic elements and a high absorption coefficient. In recent years, colloidal AgBiS2 NCs have typically been synthesized via the hot injection method using hexamethyldisilathiane (TMS) as the sulfur source. However, the cost of TMS is one of the biggest obstacles to large–scale synthesis of colloidal AgBiS2 NCs. Herein, we synthesized colloidal AgBiS2 NCs using oleylamine@sulfur (OLA–S) solution as the sulfur source instead of TMS and optimized the synthesis conditions of colloidal AgBiS2 NCs. By controlling the reaction injection temperature and the dosage of OLA–S, colloidal AgBiS2 NCs with adjustable size can be synthesized. Compared with TMS–based colloidal AgBiS2 NCs, the colloidal AgBiS2 NCs based on OLA–S has good crystallinity and fewer defects.

Eco-friendly and ultrathin solar cells featuring nanocrystals: advances and perspectives

“…Nevertheless, the size distribution was substantially increased (7.8 AE 1.9 nm), which may compromise the corresponding photovoltaic performance. 44 From the above discussions, we can determine that stoichiometric ratio has a great impact on size distribution and Ag-rich AgBiS 2 nanocrystals will generally achieve smaller particle sizes. Additionally, synthesis cost is still the main factor limiting the commercial application of AgBiS 2 nanocrystals, indicating that more attention should be paid to developing low-cost and highquality AgBiS 2 nanocrystals.…”

“…Nevertheless, the size distribution was substantially increased (7.8 ± 1.9 nm), which may compromise the corresponding photovoltaic performance. 44…”

An NIR light-driven AgBiS2@ZIF-8 hybrid photocatalyst for rapid bacteria-killing

“…AgBiS 2 /Ti displayed diffraction peaks at 27.061, 31.451, 45.131, 53.621 and 56.211, corresponding to the (1 1 1), (2 0 0), (2 2 0), (3 1 1) and (2 2 2) crystal planes of AgBiS 2 . 37 The diffraction peak of ZIF-8/Ti appearing at 7.31 correspond to the (1 1 0) crystal plane of ZIF-8. 38 It should be noted that no typical diffraction peaks of ZIF-8 were detected in the patterns of AgBiS 2 @ZIF-8/Ti.…”

I–III–VI Quantum Dots and Derivatives: Design, Synthesis, and Properties for Light-Emitting Diodes

“…Because of the high formation energy of I–III–VI QDs and derivatives, the mainstream strategies of synthesizing QDs are still based on high temperature and organic phase medium, which produce QDs with good dispersion, excellent optical properties, high crystallinity, and high PLQY (∼90%). The methods reported currently can be divided into hot-injection (HI), one-pot heating-up (HU), and single-source precursor thermal pyrolysis. − The HI method is the most adopted method for synthesizing quaternary/quinary QDs and especially shows great advantages in precisely constructing core/shell structure. The HU method may show superiority in the uniform nucleation and growth of QDs, and the reaction results can be controlled just by adjusting reaction temperature and precursor ratio.…”