Vindico applies for patent for its newest technology

October 9, 2009

Vindico Surface Technologies B.V., the Netherlands, has applied for patent for its newest technology: Vindico PV+, an unique combination of anti-reflective and hydrophilic technologies that has been independently proven to increase watt-peak up to 5 percent or more, according to an Oct. 6 release.

The efficiency of solar energy is dependent upon the amount of sunlight that reaches the photovoltaic cells. Contamination and reflection from the glass are negative factors that reduce solar production. By combining an anti-reflective coating with hydrophilic technology, solar production can be maximized.

The two technologies used in producing PV+ are combustion chemical vapor deposition and a sol-gel coating.The CCVD process works by depositing Silicon Dioxide onto glass, creating an anti-reflective coating. This technology offers economic benefits over other processes for creating anti-reflective glass, since the capital equipment is far less expensive. Additionally, unlike many anti-reflective technologies, the CCVD process can be used on all types of glass – float, low iron, patterned and even curved glass.

Application of Vindico HP, a sol-gel coating over the CCVD technology process provides a hydrophilic, dirt repelling coating, and further enhances light transmission. Sol-gels combine multiple chemical traits into a single coating for increased adhesion, durability and wear resistance (Vindico HP has passed 50,000 abrasion tests with no effect), according to the release.

In addition to using Vindico HP in combination with the CCVD process, Vindico HP can be used as a contamination reducing, hydrophilic coating on all types of photovoltaic glass and solar mirrors. By itself, Vindico HP can increase light transmission and reduce contamination by 50 percent.

This sol-gel product can endure temperatures up to 750°C and is very alkali and acid resistant. The hydrophilic properties enhance the durable dirt repelling properties. Water-based cleaning products are much more effective and rain water contributes to the cleaning process.

The in-line, automated production process of Vindico PV+ includes application of the CCVD using specialty burners and sprayers for application of the sol-gel coating. Once treated, the glass can be immediately handled and processed.

Independent testing by TNO, an internationally respected testing laboratory with more than 25 locations in Europe, has confirmed the superiority of PV+ for photovoltaic modules. Testing conducted at a solar facility in Portugal resulted in Watt-peak increases averaging 4.87 percent or greater, according to the release.