Advantages Glass Packaging Materials For Solar Power Battery
Author: Source: Datetime: 2016-09-12 16:33:33
Because ordinary glass body iron content is too Gao and light-reflecting surface of the glass is too large is one of the main solar energy utilization is reduced. For this purpose, glass manufacturers to lower the glass Che iron content, the development of new anti-reflective coating or anti-reflective glass surface of the material and how to increase the strength and prolong the life of these three very heavy eye. Currently, glass manufacturers have been able to skillfully 2~3mm thin glass for physical or chemical treatment of steel, not only remained high light transmittance values, M the strength of the glass mention Gao as 3 to 4 times that of ordinary flat glass. After the thin glass tempering process, the use of solar energy to achieve a relatively thin and thick-generation glass to reduce the iron content and increase light transmission and reduce the weight and cost of the solar power battery module is not only feasible, but the effect is obvious.
In order to reduce the light reflectance of the surface of the glass, glass manufacturers by the physicochemical treatment methods, a number of anti-reflective glass surface treatment process can be made "anti-reflective glass", which measures are mainly applied to the surface of the glass layer of the thin film layer, viable effectively reduce the reflectivity of the glass. This is also known as an antireflective film layer coating. Such anti-reflective layer on the glass surface preparation, can be vacuum deposition, etching method and Gao temperature sintering and other processes can be achieved. It is reported that glass manufacturers the choice of technology for the multi-etching method. The process refers to the chemical treatment with sodium silicate dipping prepared by combining anti-reflective glass, economical and simple, the process is as follows: original piece of glass - washing - drying - immersed in a sodium silicate solution - Extraction glass • - low-temperature drying (or dry naturally) - secondary chemical treatment - extraction and drying 1K - detection (transmittance, reflectance and film thickness of the package - the factory, the process method allows the glass light transmittance than the original 4% ~ 5%; as 3mm light transmittance increased from 80% to 85%, a higher refractive index ultra clear glass (low iron content), the light transmittance from the original 86 percent to 91 percent mention Gao this coating glass can be firmly combined tests show its wear resistance is very good.
In addition to glass, some components packaging manufacturers also transparent Tedlar, PMMA (commonly known as plexiglass) board or PC (polycarbonate) plate as a front cover material solar cell module. PMMA plate and PC board has good light, light material advantages, but poor heat resistance, easy to scratch the surface in terms of solar cell module encapsulation application subject to certain restrictions, mainly used for indoor or portable solar power generator module encapsulation .
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