Equipment for Coating Glass and Manufacturing Method and Process Thereof
With
the rapid development of the global economy, energy and environmental issues
have become increasingly prominent. Vigorously support and develop clean and
renewable energy. Among them, solar energy is the most important renewable
energy source. In order to improve the competitiveness of photovoltaic
products, one of the most effective ways is to improve the conversion
efficiency of solar cells. In addition to improving the conversion efficiency
of the cell itself through various technical means, it has also made great
progress in improving the light transmittance and weather resistance of its
packaging material, photovoltaic glass. At present, the mainstream technical
solution is to coat an anti-reflection film on the surface of photovoltaic
glass. That is, a sol-gel method is used to coat one or more layers of
thin-film material on the surface of photovoltaic glass to reduce the
reflection in a specific wavelength band, thereby improving the photovoltaic
glass Transmittance. The methods for coating the glass surface include a roll
coating method, a spray coating method, and a surface etching method.
However,
all the current technical methods cannot well solve the problem of the uniformity
of the coating layer. During the spray coating method, the coating solution in
the center of the spray gun is enriched, causing speckles; the surface etching
method is difficult to uniformize the composition of the surface of the
patterned glass, which causes the etching reaction speed to be inconsistent,
resulting in uneven film thickness; even the best uniformity The roller coating
method is restricted by various factors such as poor glass thickness, roller
table transfer jitter, etc. It is also difficult to achieve high-precision
consistency. In the case where the coating uniformity cannot be further
improved, as a result, on the one hand, the color difference of the module
affects the appearance, and on the other hand, the hot spot effect is caused by
the inconsistent light transmittance in each area of the coated glass, which
affects the durability of the module.
Provide
a vacuum coating system. This system is a combination of a vacuum coating
system and a vacuum glove box system. It can complete thin film evaporation in
a high vacuum evaporation chamber and store samples in a high purity inert gas
atmosphere in the glove box. , Preparation and detection of samples after
evaporation. The combination of evaporation coating and vacuum glove box realizes
the fully enclosed production of evaporation, packaging, testing and other
processes, so that the entire thin film growth and device preparation process
is highly integrated in a complete controllable environment atmosphere system,
eliminating the organic large area circuit preparation process The influence of
unstable factors in the atmospheric environment ensures the production of
high-performance, large-area organic optoelectronic devices and circuits.
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