Preparing method of high active selenium source for selenylation, apparatus and applications

A high-activity, selenium source technology, applied in binary selenium/tellurium compounds, chemical industry, elemental selenium/tellurium, etc., can solve the problems of selenium material waste, inhomogeneity, and difficult reaction, etc., and achieve the improvement of photoelectric conversion efficiency, Ease of transportation and storage, and the effect of saving selenium raw materials

Active Publication Date: 2010-01-20
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In use, selenium vapor contains a large amount of selenium atomic chain Se n (2≤n≤8), poor activity, not easy to participate in the reaction, easy to form a desorption process on the surface of the film, resulting in many defects, unevenness and poor repeatability of the film
Since the selenium vapor contains a large number of selenium atoms that do not participate in the reaction, the waste of selenium materials is relatively large during use
Therefore, solid-state selenium sources have not been used as selenium sources for selenization in the production of CIGS solar cells.

Method used

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  • Preparing method of high active selenium source for selenylation, apparatus and applications
  • Preparing method of high active selenium source for selenylation, apparatus and applications

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1, the selenium source generating device used in the method for producing highly active selenium source

[0027] Such as figure 1 As shown, the device includes a closed reaction tank, a solid selenium source 1 is placed in the lower part of the reaction tank, and a heating device 2 is located on the periphery of the reaction tank corresponding to the solid selenium source, which can be heated by resistance wire or any other available heating device. The device is provided with a gas input port 3 for introducing hydrogen or a mixed gas of hydrogen and argon on the side wall of the reaction tank above the solid selenium source, and an excitation power supply 4 is arranged in the reaction tank above the gas input port. Connected anode glow electrode 6 and cathode glow electrode 5, in the reaction tank, the part above the glow electrode constitutes the hydrogen selenide reaction chamber 8, and the top of the reaction tank is provided with a device for outputting ...

Embodiment 2

[0029] Embodiment 2, the production method of the highly active selenium source that is used for selenization treatment

[0030] The method includes:

[0031] First, solid selenium is heated and evaporated to generate selenium vapor; the heating and evaporation temperature is 220°C.

[0032] Second, hydrogen is incorporated into the selenium vapor produced by the upward step.

[0033] Third, the gas mixture in the previous step is decomposed and synthesized by plasma glow to obtain hydrogen selenide and a highly active solid selenium selenium atmosphere.

[0034] Using an AC power supply with a frequency of 13.56MHz to generate plasma to ionize the gas, thereby decomposing the selenium atom chain in the selenium vapor, making the selenium atom react with hydrogen gas to produce hydrogen selenide, and single-atom selenium in a highly active selenium atmosphere.

Embodiment 3

[0035] Embodiment 3, the production method of the highly active selenium source that is used for selenization treatment

[0036] The method includes:

[0037] First, solid selenium is heated and evaporated to generate selenium vapor; the heating and evaporation temperature is 550°C.

[0038] Second, hydrogen gas or a mixed gas of hydrogen gas and argon gas is incorporated into the selenium vapor generated in the upward step; the gas flow ratio of the incorporated hydrogen gas and ammonia gas is 1:10.

[0039] Third, the gas mixture in the previous step is decomposed and synthesized by plasma glow to obtain hydrogen selenide and a highly active solid selenium selenium atmosphere.

[0040] The AC power supply with a frequency of 50KHz is used to generate plasma to ionize the gas, thereby decomposing the selenium atom chain in the selenium vapor, making the selenium atom react with hydrogen gas to produce hydrogen selenide, and single-atom selenium in a highly active selenium at...

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PUM

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Abstract

The invention discloses a method for generating a highly active selenium source used for selenizing treatment, as well as a device and the application thereof. The method comprises the steps as follows: heating and vaporizing solid selenium to generate selenium gas; adding hydrogen or a mixture of hydrogen and argon to the selenium gas generated by the last step; and subjecting the mixture of gases in the last step to glow discharge decomposition and synthesis to obtain hydrogen selenide and highly active selenium gas. The device for generating the selenium source comprises an airtight reaction tank, a solid selenium source in the reaction tank, positive and negative glow discharge electrodes, a hydrogen selenide reaction cavity, as well as a heating device and an excitation power supply outside the reaction tank. A gas inlet is further arranged on the lateral wall of the reaction tank; and a gas outlet is arranged on the top of the reaction tank. The method not only retains the advantages of the solid selenium, namely low cost, non-toxicity and easiness in transport and store, and prepares the hydrogen selenide and the highly active selenium ambience with the characteristics of the hydrogen selenide and the highly active selenium, but also saves a large amount of selenide materials, reduces the cost and has important practical value.

Description

【Technical field】 [0001] The invention belongs to the technical field of photovoltaic power generation and thin-film solar cells, and specifically relates to a production method, device and application of a highly active selenium source in the preparation of multi-component compound semiconductor materials, especially copper indium gallium selenide thin film materials. 【Background technique】 [0002] Photovoltaic power generation has the characteristics of no noise, no pollution, simple maintenance, wide distribution of resources, and inexhaustibility. Its working life can reach 20 to 30 years, and it is an ideal clean and renewable energy source. In today's situation where mineral resources are increasingly scarce and environmental pollution is putting enormous pressure on the sustainable development of human society, solar power is considered to be the most important new energy source in the 21st century, and its development potential is huge. [0003] Among all kinds of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04C01B19/02C23C14/35H01L31/18
CPCY02P20/10Y02P70/50
Inventor 孙云于涛李凤岩李宝璋李长健何青
Owner NANKAI UNIV
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