Micron-sized spherical copper-zinc-tin-sulfur monocrystal particle preparation method

A technology of copper-zinc-tin-sulfur and single-crystal particles, which is applied in the manufacture of final products, sustainable manufacturing/processing, electrical components, etc., can solve the problems of difficult growth of large-size single crystals, large phase differences, and gaps, and achieve easy industrialization The effect of simple production and preparation equipment and low price
CN104952979AActive Publication Date: 2015-09-30LINGNAN NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
LINGNAN NORMAL UNIV
Publication Date
2015-09-30

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Abstract

The invention relates to the technical field of semiconductor photoelectric materials and devices and discloses a micron-sized spherical copper-zinc-tin-sulfur monocrystal particle preparation method. The method includes: grinding and mixing different combinations of metal powder, sulfides, elemental sulfur powder, fluxing agents, copper-zinc-tin-sulfur nano particles and the like according to designed proportions, packaging mixed powder in a quartz reaction vessel in a vacuum manner, keeping the quartz reaction vessel at the temperature of 750-1000 DEG C for 48-120h, and quickly cooling the quartz reaction vessel to the room temperature; taking out a sample, and washing and drying to obtain copper-zinc-tin-sulfur monocrystal particles; the prepared monocrystal particles are adjustable in size by means of recrystallization temperature and time, and ingredients of the particles can be effectively regulated within a certain range through a molar ratio of elements in a precursor. The prepared monocrystal particles are uniform in ingredient and controllable in size so as to be superior to those prepared according to traditional methods.
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Description

technical field

[0001] The invention relates to the technical field of semiconductor optoelectronic materials and devices, more specifically, to a method for preparing micron-sized spherical copper-zinc-tin-sulfur single crystal particles. Background technique

[0002] Multi-component CuInGaSe 2 (CIGS) thin-film solar cell has high conversion efficiency and is easy to mass-produce. It has become the most promising solar cell material at present. At present, CIGS cell is the thin-film solar cell with the highest photoelectric conversion efficiency in the world, and its highest conversion efficiency has been up to 21.7%. However, its constituent elements In and Ga are scarce on the earth, making it difficult for CIGS thin-film batteries to achieve TW (10 9 kW) level of large-scale applications.

[0003] Copper-zinc-tin-sulfur (CZTS) quaternary compound semiconductors are considered to be the most promising alternatives to Cu(In,Ga)Se 2 Novel compound semiconductors for the...

Claims

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