A General Synthesis of Cu−In−S Based Multicomponent Solid-Solution Nanocrystals with Tunable Band Gap, Size, and Structure

Abstract

A general approach has been developed to synthesize high-quality Cu−In−S based multicomponent solid-solution nanocrystals (NCs) of Zn2x (CuIn)1−x S2, (CuIn)1−x Cd2x S2, and (ZnS) x (CuInS2) y (CdS) z at relatively low temperature. This was achieved in a noncoordinating solvent system (toluene) by a simple solvothermal process using metal diethyldithiocarbamate complexes as the precursors. The composition, crystalline structure, size, and bang gap of the NCs could be readily tuned by the precursors used and synthesis conditions. This work provides useful understanding for the synthesis of solid-solution NCs that are of interest for photocatalyst, solar cell, and other applications.

Synthesis of bullet-like wurtzite CuInS2 nanocrystals under atmospheric conditions

“…Due to CuInS 2 NCs inks can be sprayed, spin or dip coated onto substrates directly and easily, solution routes to synthesize CuInS 2 NCs have attracted extensive attention. Several solution routes for the synthesis of CuInS 2 NCs have been explored, including hotinjection method [5][6][7], solvothermal method [8][9][10][11], and chemical transformation method [12]. However, some new problems also emerged, for example, high pressure, anhydrous non-oxygen or complex operating processes are still necessary in experiments.…”

Near‐Infrared Luminescent Ternary Ag3SbS3 Quantum Dots by in situ Conversion of Ag Nanocrystals with Sb(C9H19COOS)3

“…In this work, we report a facile in situ conversion method to obtain hexagonal‐phase Ag 3 SbS 3 QDs by reaction between a metal complex of binary Sb/S organic precursor, antimony tri(isooctyl thioglycollate), and Ag nanocrystals under low temperature. Metal complex precursors working as a metal/sulfide organic precursor have been widely utilized for synthesis of multinary metal chalcogenides . Lu and his co‐workers reported the synthesis of Cu‐In‐S based NCs at relatively low temperature.…”

Recent Developments in Colloidal Synthesis of CuInSe2 Nanoparticles

“…For optimum device performance it is often important to apply single phase NPs. [28] Thus, a careful choice of the precursors, ligands, and reaction conditions is necessary to avoid the formation of secondary phases. [28] Thus, a careful choice of the precursors, ligands, and reaction conditions is necessary to avoid the formation of secondary phases.…”