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A semiconductor metal oxide nano-whisker/crystalline silicon cell and its preparation method

A technology of crystalline silicon cells and nano whiskers, which is applied in semiconductor devices, nanotechnology, nanotechnology, etc., can solve the problems that the light energy utilization efficiency and photoelectric conversion efficiency of crystalline silicon solar cells have not been significantly improved, and achieve industrial scale Application prospects, reduce light reflectivity, and good stability

Inactive Publication Date: 2016-09-07
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the light energy utilization efficiency and photoelectric conversion efficiency of crystalline silicon solar cells have not been significantly improved.

Method used

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  • A semiconductor metal oxide nano-whisker/crystalline silicon cell and its preparation method
  • A semiconductor metal oxide nano-whisker/crystalline silicon cell and its preparation method
  • A semiconductor metal oxide nano-whisker/crystalline silicon cell and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The preparation method of the semiconductor metal oxide nano-whisker / crystalline silicon cell provided in this embodiment, the specific steps are as follows:

[0029] (a) Prepare a 0.001mol / L metal source solution; weigh copper acetate, add a certain amount of distilled water and 40% hydrofluoric acid; make the concentration of copper acetate 0.001mol / L, and the concentration of hydrofluoric acid 5.0mol / L.

[0030] (b) Prepare corrosion solution; weigh a certain amount of hydrofluoric acid and hydrogen peroxide and add distilled water; the concentration of hydrofluoric acid is 5.0mol / L, and the concentration of hydrogen peroxide is 0.7mol / L.

[0031] (c) Immerse the cell in the metal source solution for 15s, take it out, and drain it; then immerse it in the corrosion solution for 15s, take it out, wash it with deionized water for 1min; dry the surface with a hair dryer.

[0032] (d) Heat treatment at 180°C for 5 minutes in a vacuum drying oven.

Embodiment 2

[0034] The preparation method of this example is the same as that of Example 1, except that in step (a), the metal source solution is a silver ion solution with a concentration of 0.001 mol / L.

Embodiment 3

[0036] The preparation method of this example is the same as that of Example 1, except that in step (a), the metal source solution is a platinum solution with a concentration of 0.001 mol / L.

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Abstract

The invention discloses semiconductor metallic oxide nanocrystalline whiskers / a crystalline silicon cell piece and a preparing method of the semiconductor metallic oxide nanocrystalline whiskers / the crystalline silicon cell piece. The method has the advantages that the manufacturing technology is simple and is conducted fast, the surface appearance of the obtained crystalline silicon cell piece is stable and controllable; the luminous reflectance can be greatly reduced, and the photoelectric converting efficiency of the crystalline silicon solar cell is improved; the raw materials are easy to obtain, no pollution is produced in the manufacturing process, the efficiency is high, and the method is suitable for large-scale industrial production. According to the method, catalytic redox reaction is generated between metal ions and the coarse crystalline silicon cell piece surface in a high-corrosive medium, the even and controllable nanocrystalline whiskers are formed, and accordingly the absorption efficiency of the crystalline silicon cell piece, the open-circuit voltage, the short-circuit current and the fill factors are improved, and the photoelectric converting efficiency of the crystalline silicon cell piece is greatly improved.

Description

technical field [0001] The invention relates to the field of solar cells and optoelectronic nanomaterials, in particular to a semiconducting metal oxide nano whisker / crystalline silicon battery sheet and a preparation method thereof. Background technique [0002] Photovoltaic technology is the most promising new energy power generation technology. In the past ten years, the average annual growth rate of global photovoltaic power generation has reached 50%. In the next few decades, it will continue to grow and develop, and eventually become the main body of human energy. It can be said that whoever really masters photovoltaic technology will have the initiative in future energy. China is the world's largest producer of photovoltaics. In 2012, China's output reached 21GW, accounting for 63% of the global photovoltaic industry; its installed capacity exceeded 3.5GW, second only to Germany, and it is expected to surpass Germany this year to become the world's number one. From...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0264H01L31/036
CPCB82Y30/00B82Y40/00H01L31/02168H01L31/1804Y02E10/547Y02P70/50
Inventor 余锡宾杨海吴圣垚吴刚
Owner SHANGHAI NORMAL UNIVERSITY