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Preparation method of up-conversion luminescence EVA photovoltaic film

A light-emitting, adhesive film technology, applied in the direction of photovoltaic power generation, film/sheet adhesives, adhesives, etc., can solve the problems of output power reduction, reduction of power generation power, and increase of battery operating temperature, etc., to achieve output power increase , lower temperature, better compatibility

Active Publication Date: 2017-04-19
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to the fixed band gap (1.12eV) of silicon semiconductors, traditional crystalline silicon solar cells cannot completely absorb and convert natural sunlight energy, and infrared light with a wavelength greater than 1200nm cannot be utilized by silicon solar cells. This part of the energy is greater than that of the sun. 30% of the total energy of light, and infrared radiation causes the operating temperature of the battery to increase significantly, thereby reducing the power generation. Currently, for the battery on the market, the output power drops by 0.3 to 0.5% for every 1°C increase in the operating temperature

Method used

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  • Preparation method of up-conversion luminescence EVA photovoltaic film
  • Preparation method of up-conversion luminescence EVA photovoltaic film
  • Preparation method of up-conversion luminescence EVA photovoltaic film

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Embodiment 3

[0023] Example 3 is a preferred embodiment.

[0024] The antioxidant in Examples 1-5 includes a primary antioxidant and a secondary antioxidant. The mass ratio of the primary antioxidant to the secondary antioxidant is 8:1, and the primary antioxidant is β-(3,5- Di-tert-butyl-4-hydroxyphenyl) stearyl propionate; auxiliary antioxidant is tris(4-nonylphenol) phosphite and / or tris(2,4-di-tert-butyl phosphite) Phenyl) ester, preferably a combination of tris(4-nonylphenol) phosphite and tris(2,4-di-tert-butylphenyl) phosphite, the auxiliary antioxidant in Examples 1-5 The compound used is tris(4-nonylphenol) phosphite and tris(2,4-di-tert-butylphenyl) phosphite.

[0025] The cross-linking agent in the present invention includes a cross-linking curing agent and a co-cross-linking agent, and the mass ratio of the cross-linking curing agent to the co-cross-linking agent is 10:1, wherein the cross-linking curing agent includes organic peroxides and / or couples. Nitrogen compounds, organic ...

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Abstract

The invention relates to the field of photovoltaic film technology, especially to a preparation method of an up-conversion luminescence EVA photovoltaic film. The preparation method comprises the following steps: fully mixing an ethylene-vinyl acetate copolymer with an up-conversion luminescence agent, an anti-oxidant, a cross-linking agent and a silane coupling agent in proportion, adopting a tape-casting process, mixing, extruding, tape-casting, measuring thicknes, knurling, sizing, trimming, rolling, and packaging. The temperature of a first heating zone of an extruder is 260-320 DEG C; the temperature of a second heating zone is 320-400 DEG C; the temperature of a third heating zone is 330-400 DEG C; the temperature of a connecting zone is 330-400 DEG C; and the temperature of a net changing zone is 330-400 DEG C. The selected up-conversion luminescence material contains an ethene-acrylic polymer and has good compatibility with the main-body EVA resin. Light transmittance of the film at 400-1200 nm can reach 90% and above, and the use of ultraviolet-visible light by a solar cell is not obstructed.

Description

Technical field [0001] The invention relates to the technical field of photovoltaic adhesive films, in particular to a method for preparing an up-conversion light-emitting EVA photovoltaic adhesive film. Background technique [0002] EVA (ethylene-vinyl acetate copolymer) is a thermoplastic polymer material. Because of its low cost, convenient molding, outstanding optical properties, excellent mechanical properties and electrical properties, it is widely used as a solar cell packaging material. At the same time, because silicon semiconductors have a fixed band gap (1.12eV), traditional crystalline silicon solar cells cannot fully absorb and convert natural sunlight energy. Infrared light with a wavelength greater than 1200nm cannot be used by silicon solar cells. This part of the energy is greater than the sun. 30% of the total energy of light, and infrared radiation greatly increases the operating temperature of the battery, thereby reducing the power generation. For the current...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J123/28C09J7/00C09J11/04C09J11/06H01L31/048
CPCY02E10/50C09J123/0853C08K2201/014C08L2203/16C08L2203/206C08L2205/02C08L2205/03C09J7/00C09J11/04C09J11/06H01L31/0481C08L23/28C08L29/14C08K13/02C08K3/16C08K3/30C08K5/1345C08K5/526C08K5/5425C08K5/14C08K5/103C08K5/3492
Inventor 张好宾吕松何胡送
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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