Method for preparing germanium selenide powder

A technology of germanium selenide and powder, which is applied in the direction of chemical instruments and methods, binary selenium/tellurium compounds, metal selenide/telluride, etc., which can solve the problems of difficult control of germanium selenide, less research, and difficult preparation of solid-phase reaction, etc. problems, to achieve the effect of being convenient for mass production, simple process method, and easy to obtain raw materials

Inactive Publication Date: 2017-02-22
LUOYANG NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the melting point of germanium is about 938.5°C and the boiling point is about 2830°C, while the melting point of selenium is 221°C and the boiling point is 684.9°C. Due to the large gap between the melting point and boiling point of germanium and selenium, and because the reaction process of selenium and germanium is very It is easy to generate germanium diselenide and other germanium compounds. Therefore, the reaction of germanium and selenium to prepare germanium selenide is difficult to control, and its solid state reaction is more difficult to prepare, so its research at home and abroad is less
At present, there are very few preparation methods for germanium selenide, which greatly limits the application and development of germanium selenide

Method used

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Examples

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Embodiment 1

[0025] A preparation method of germanium selenide powder is prepared by mixing germanium powder and selenium powder evenly, first heating and heat-preserving under vacuum condition, and then pulverizing under the protection of argon gas.

[0026] The method specifically includes the following steps:

[0027] (1) Mix germanium powder and selenium powder with a molar ratio of 1:1 with an agate mortar, then put them into a quartz crucible or corundum crucible, and finally put the quartz crucible or corundum crucible into a vacuum furnace; germanium powder The particle diameters of the germanium powder and the selenium powder are all less than or equal to 500 nanometers; after mixing the germanium powder and the selenium powder evenly according to the proportion, first briquetting;

[0028] (2) Vacuumize the vacuum furnace, replace the gas with argon for more than 10 times, and finally raise the temperature of the Zhenke furnace to 660°C at a rate of 3°C / min under vacuum, keep it ...

Embodiment 2

[0032] A preparation method of germanium selenide powder is prepared by mixing germanium powder and selenium powder evenly, first heating and heat-preserving under vacuum condition, and then pulverizing under the protection of argon gas.

[0033] The method specifically includes the following steps:

[0034] (1) Mix germanium powder and selenium powder with a molar ratio of 1:1.2 with an agate mortar, then put them into a quartz crucible or corundum crucible, and finally put the quartz crucible or corundum crucible into a vacuum furnace; germanium powder The particle diameters of the germanium powder and the selenium powder are all less than or equal to 500 nanometers; after mixing the germanium powder and the selenium powder evenly according to the proportion, first briquetting;

[0035] (2) Vacuumize the vacuum furnace, and replace the gas with argon for more than 10 times, and finally raise the temperature of the Zhenke furnace to 680°C at a rate of 5°C / min under vacuum, ke...

Embodiment 3

[0039] A preparation method of germanium selenide powder is prepared by mixing germanium powder and selenium powder evenly, first heating and heat-preserving under vacuum condition, and then pulverizing under the protection of argon gas.

[0040] The method specifically includes the following steps:

[0041] (1) Mix germanium powder and selenium powder with a molar ratio of 1:1.1 with an agate mortar, then put them into a quartz crucible or corundum crucible, and finally put the quartz crucible or corundum crucible into a vacuum furnace; germanium powder The particle diameters of the germanium powder and the selenium powder are all less than or equal to 500 nanometers; after mixing the germanium powder and the selenium powder evenly according to the proportion, first briquetting;

[0042] (2) Vacuumize the vacuum furnace, replace the gas with argon for more than 10 times, and finally raise the temperature of the Zhenke furnace to 670°C at a rate of 10°C / min under vacuum, keep ...

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Abstract

The invention relates to the technical field of photoelectric materials, and relates to a powder material, in particular to a method for preparing selenium germanium powder. The selenium germanium powder is prepared by mixing germanium powder and selenium powder evenly, then conducting heating and maintaining the temperature under vacuum conditions, and crushing under the protection of argon. The selenium germanium powder is prepared by a diffusion reaction between germanium and selenium at high temperature under vacuum. The problem that the reaction of the germanium and the selenium for preparation of germanium selenide is difficult to control is solved, and the high-purity selenium germanium powder is obtained by the preparation. The technological method is simple, raw materials are easy to obtain, energy consumption is low and mass production is facilitated.

Description

technical field [0001] The invention relates to the technical field of photoelectric materials, in particular to a powder material, in particular to a preparation method of germanium selenide powder. Background technique [0002] As a semiconductor material, germanium selenide has a small band gap and responds to both visible light and near-infrared light. Most of it has a layered structure and is widely used in photoelectric detection and catalysis. However, the melting point of germanium is about 938.5°C and the boiling point is about 2830°C, while the melting point of selenium is 221°C and the boiling point is 684.9°C. Due to the large gap between the melting point and boiling point of germanium and selenium, and because the reaction process of selenium and germanium is very It is easy to generate germanium diselenide and other germanium compounds. Therefore, the reaction of germanium and selenium to prepare germanium selenide is difficult to control, and its solid state ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04C30B29/46C30B28/02
CPCC01B19/007C01P2002/72C30B28/02C30B29/46
Inventor 贾红赵志国赵纯华赵建果靳瑞敏
Owner LUOYANG NORMAL UNIV
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