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Synthesis and characterization of semiconductor metal sulfide nanocrystals using microemulsion technique

Jyoti Tolia, Mousumi Chakraborty, Z. V. P. Murthy

Open publisher page 14 citations

Abstract

Abstract The semiconductor nanocrystals ZnS, PbS, CdS and CuS were synthesized via microemulsion technique involving metal acetate, reducing agent (Na2S) and Triton X‐100 as surfactant. Nanocrystals were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The average size of ZnS, PbS, CdS and CuS nanocrystals were found to be 5.6 nm, 13.3 nm, 11.4 nm and 6.2 nm, respectively. Different parameters like surfactant (Triton X‐100) concentration, water‐to‐surfactant ratio (ω), precursor concentration [zinc acetate, (Zn(AC)2], reducing agent concentration [sodium sulphide, (Na2S)] were optimized to synthesize ZnS quantum dots.

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What this paper is about

Abstract The semiconductor nanocrystals ZnS, PbS, CdS and CuS were synthesized via microemulsion technique involving metal acetate, reducing agent (Na2S) and Triton X‐100 as surfactant. Nanocrystals were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The average size of ZnS, PbS, CdS and CuS nanocrystals were found to be 5.6 nm, 13.3 nm, 11.4 nm and 6.2 nm, respectively. Different parameters like surfactant (Triton X‐100) concentration, water‐to‐surfactant ratio (ω), precursor concentration [zinc acetate, (Zn(AC)2], reducing agent concentration [sodium sulphide, (Na2S)] were optimized to synthesize ZnS quantum dots.

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Available abstract

Abstract The semiconductor nanocrystals ZnS, PbS, CdS and CuS were synthesized via microemulsion technique involving metal acetate, reducing agent (Na2S) and Triton X‐100 as surfactant. Nanocrystals were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The average size of ZnS, PbS, CdS and CuS nanocrystals were found to be 5.6 nm, 13.3 nm, 11.4 nm and 6.2 nm, respectively. Different parameters like surfactant (Triton X‐100) concentration, water‐to‐surfactant ratio (ω), precursor concentration [zinc acetate, (Zn(AC)2], reducing agent concentration [sodium sulphide, (Na2S)] were optimized to synthesize ZnS quantum dots.

Key concepts: Microemulsion, Dynamic light scattering, Zinc sulfide, Pulmonary surfactant, Transmission electron microscopy, Nanocrystal, Materials science, Cadmium acetate

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