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Synthesis Method for Controlling Antimony Selenide Nanostructure Shapes

a technology of antimony selenide and nanostructure, which is applied in the field of chemical synthesis, can solve the problems of poor material quality, and achieve the effect of poor material quality and high quality

Inactive Publication Date: 2017-03-30
SHARP KK
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  • Abstract
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AI Technical Summary

Benefits of technology

The method achieves high-quality antimony selenide nanostructures with precise control over shape and size, enhancing their potential for photovoltaic and lighting applications by improving crystallinity and reducing defects.

Problems solved by technology

However, the conventional methodologies for their preparation have resulted in a poor quality of the materials, often due lack of control.

Method used

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  • Synthesis Method for Controlling Antimony Selenide Nanostructure Shapes
  • Synthesis Method for Controlling Antimony Selenide Nanostructure Shapes
  • Synthesis Method for Controlling Antimony Selenide Nanostructure Shapes

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Embodiment Construction

[0025]Different approaches can be applied for the selective synthesis of antimony selenide nanostructures. Although not explicitly described, similar principles can be applied towards the preparation of antimony sulfide or antimony telluride. It should be noted that the methods disclosed herein are the first known example of the direct colloidal chemical synthesis of antimony chalcogenides. The selective preparation is based upon the proper choice of the starting material as well as reaction media. Different surfactants, present in the reaction solution, which can be specifically introduced or obtained through the decomposition of the precursors, dictate the growth of the nanostructures in particular directions. Herein is presented the preparation of the nanorods, nanocrystals, and nano-hollow spheres.

[0026]One procedure for antimony selenide nanorod preparation can be described as follows: a 200 mg of antimony (III) chloride is dissolved in 3 milliliters (mL) of oleic acid at 150° ...

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Abstract

Methods are provided for controlling the shape of antimony selenide (Sb2Se3) synthesized nanostructures. The method dissolves an antimony (III) salt in a first amount of carboxylic acid, forming an antimony precursor. In one aspect, antimony (III) chloride is dissolved in oleic acid. Separately, selenourea is dissolved in oleylamine, forming a selenium precursor. The antimony precursor is combined with the selenium precursor to form a first solution and cause a reaction. The reaction is quenched with a solvent having a low boiling point. In response to quenching the reaction in the first solution, antimony selenide nanorods are formed, having a length in the range of 150-200 nanometers (nm) and a diameter in the range of 20 to 30 nm. Related methods can be used to create, shorter nanorods, nanocrystals, and hollow nanospheres.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention generally relates to methods of chemical synthesis and, more particularly, to methods for synthesizing antimony selenide nanostructures in a variety of shapes.[0003]2. Description of the Related Art[0004]In the current development of modern photovoltaics there is a significant demand for new materials that can potentially act as a substitute for conventional silicon. Such research and development has given rise to the cadmium telluride (CdTe) and copper indium gallium selenide (CIGS) solar cells, based on thin films technology. Moreover, hybrid organic / inorganic perovskite materials have recently emerged as sensitized architectures as a result of the constant search and evaluation of new materials as absorbers in solar cells.[0005]Among the materials offering promise in the fabrication of solar cells, antimony—based chalcogenides represent a special subgroup. In comparison to many other materials, antimon...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C01B19/00H01L31/0352H01L31/0272
CPCC01B19/007H01L31/0272H01L31/035209C01P2006/40C01P2004/34C01P2004/64C01P2004/16H01L31/032H01L31/035227
Inventor KOPOSOV, ALEXEY
Owner SHARP KK
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