Complete study of the composition and shape evolution in the synthesis of Cu2ZnSnS4 (CZTS) semiconductor nanocrystals

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

This article describes a complete study of the evolution of composition (from binary to quaternary) and shape (0D–1D) during the synthesis of CZTS nanocrystals.

Abstract

This article describes a complete study of the evolution of composition (from binary to quaternary) and shape (0D–1D) during the synthesis of CZTS nanocrystals. Aliquot studies were used to track the nucleation and growth in the early stages. Distinctive stages are evident in the reaction due to the progressive incorporation of tin and zinc into the primary copper sulfide particles as a result of their differing precursor reactivity. In addition, reaction windows for shape control were devised by tuning the amine concentration, thereby allowing the formation of a diverse range of shape morphologies including nanorods and ellipsoids, as well as atypical tadpole-shaped and P-shaped nanocrystals. Polytypic nanocrystals with wurtzite and zinc blende domains were also achieved by changing the type of metal precursors used initially in the reaction.

Related collections

Most cited references 55

Record: found
Abstract: found
Article: not found

Colloidal nanocrystal synthesis and the organic-inorganic interface.

Yadong Yin, A Alivisatos (2005)

Colloidal nanocrystals are solution-grown, nanometre-sized, inorganic particles that are stabilized by a layer of surfactants attached to their surface. The inorganic cores possess useful properties that are controlled by their composition, size and shape, and the surfactant coating ensures that these structures are easy to fabricate and process further into more complex structures. This combination of features makes colloidal nanocrystals attractive and promising building blocks for advanced materials and devices. Chemists are achieving ever more exquisite control over the composition, size, shape, crystal structure and surface properties of nanocrystals, thus setting the stage for fully exploiting the potential of these remarkable materials.

0 comments Cited 495 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Shape control of CdSe nanocrystals

Peng, Manna, Yang … (2000)

Nanometre-size inorganic dots, tubes and wires exhibit a wide range of electrical and optical properties that depend sensitively on both size and shape, and are of both fundamental and technological interest. In contrast to the syntheses of zero-dimensional systems, existing preparations of one-dimensional systems often yield networks of tubes or rods which are difficult to separate. And, in the case of optically active II-VI and III-V semiconductors, the resulting rod diameters are too large to exhibit quantum confinement effects. Thus, except for some metal nanocrystals, there are no methods of preparation that yield soluble and monodisperse particles that are quantum-confined in two of their dimensions. For semiconductors, a benchmark preparation is the growth of nearly spherical II-VI and III-V nanocrystals by injection of precursor molecules into a hot surfactant. Here we demonstrate that control of the growth kinetics of the II-VI semiconductor cadmium selenide can be used to vary the shapes of the resulting particles from a nearly spherical morphology to a rod-like one, with aspect ratios as large as ten to one. This method should be useful, not only for testing theories of quantum confinement, but also for obtaining particles with spectroscopic properties that could prove advantageous in biological labelling experiments and as chromophores in light-emitting diodes.