Protection film for high-power concentrating photovoltaic system receiver and production method thereof

A photovoltaic system and high-power concentrating technology, applied in photovoltaic power generation, semiconductor devices, and final product manufacturing, etc., can solve the problems of receiver damage, bubbles susceptible to thermal expansion, control film uniformity and thickness, etc. The effect of accelerating heat transfer and preventing short circuit

Active Publication Date: 2014-01-29
DONGFANG ELECTRIC CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Silicone protective film is usually processed by manual coating. This method has the advantage of low cost, but it is difficult to avoid residual air on the edge of the receiver surface and the formation of air bubbles.
During the working process of the receiver, these air bubbles are easy to heat and expand, which will cause mechanical stress and cause damage to the receiver
In addition, there are problems in the thickness uniformity and process repeatability of manual coating of silica gel, and it will also increase the difficulty of repairing receiver failures
[0005] The oxide film is prepared by physical sputtering as the receiver protective film. Due to the limitation of the physical sputtering process principle, it is difficult to form an oxide fil

Method used

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  • Protection film for high-power concentrating photovoltaic system receiver and production method thereof
  • Protection film for high-power concentrating photovoltaic system receiver and production method thereof
  • Protection film for high-power concentrating photovoltaic system receiver and production method thereof

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Embodiment Construction

[0026] Such as figure 1 As shown, the receiver of the conventional structure includes a GaAs stacked solar cell 1, a gold wire 2 for bonding, a Schottky diode 3, a cable interface 4, and a copper-clad ceramic plate 5. Taking this receiver as an example, the following methods are combined: Implement the present invention:

[0027] Step 1: Place the receiver on the sample holder in the vacuum chamber of the atomic layer deposition (ALD) equipment. The vacuum degree of the vacuum chamber is kept at 600-800pa, and the chamber temperature is room temperature;

[0028] Step 2: Pass the metal organic precursor trimethylaluminum (TMAl) into the vacuum chamber, the metal organic matter forms adsorption on the surface of the receiver, control the adsorption reaction time for 0.1~0.3 seconds, and then pass nitrogen gas into the vacuum chamber for blowing Sweeping, the sweeping time is 1~2 seconds;

[0029] Step 3: Pass the second precursor water vapor, and the water vapor will further...

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Abstract

The invention discloses a protection film for a high-power concentrating photovoltaic system receiver. The protection film is an Al2O3 film and is arranged on the outer layer of the receiver by the atomic layer deposition technology. The receiver comprises a copper-coated ceramic panel, a solar cell, a Shaw Schottky diode, gold threads and the like. The protection film coats on the outer surface of all components contacting with the air. The Al2O3 film is produced by the ALD (atomic layer deposition) technology is arranged on the upper surface of the receiver and coats on components and circuits on the surface of the receiver. According to the protection film, effects of insulation, water proofing, oxidation resistance and thermal conductivity can be achieved by adjusting parameters of different precursor acting time, air pressure, thickness and the like during Al2O3 film production, and the protection film of the receiver is an ideal one.

Description

technical field [0001] The invention belongs to the technical field of solar energy manufacturing, and in particular relates to a protective film for a receiver in a high-power concentrating photovoltaic system and a preparation method thereof. Background technique [0002] With the rapid improvement of the efficiency of GaAs tandem solar cells, its ground application prospects have attracted much attention. The high-power concentrated photovoltaic system is the basis for the large-scale ground application of GaAs tandem solar cells. Converging sunlight to the surface of GaAs tandem solar cells through lenses can effectively reduce the consumption of GaAs tandem solar cell materials per unit installed capacity of the system, and at the same time improve the photoelectric conversion efficiency of this type of solar cell to a certain extent. At present, the photoelectric conversion efficiency of GaAs tandem solar cells under high concentration conditions can reach 44%, the ef...

Claims

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Application Information

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IPC IPC(8): H01L31/0216H01L31/18C23C16/455
CPCC23C16/403C23C16/45525H01L31/049Y02E10/50Y02P70/50
Inventor 李愿杰黄添懋
Owner DONGFANG ELECTRIC CORP LTD
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