Features of double-glass bifacial modules

Bifacial glass technology is the preferred material among manufacturers for the rear side cover of the modules. Some key advantages of the glass-glass structure are: Glass-glass modules can also be frameless, which helps eliminate the cost of an extruded aluminum frame. However, glass-glass models with frames have a lower risk of breakage.

Due to their better reliability, glass-glass bifacial configurations have a larger portion of the worldwide bifacial module market share. Glass shortages, weight concerns for larger format modules, and decreasing prices for transparent backsheets have caused some manufacturers to switch to a glass-transparent backsheet structure.

As a result, most glass-glass modules come with frames in place. Compared with standard glass backsheet technology, framed modules with two layers of glass are heavier. Therefore, transparent backsheets are a solution for a lighter bifacial module. A more lightweight module means less cost on transportation, labor, and trackers whenever applicable.

Our dual glass modules use the same internal circuit connection as a traditional glass-backsheet module but feature heat-strengthened glass on both sides. We produce the back glass with a unique drilling technique that ensures the reliability of both the junction box installation and the module.

However, Trina Solar has made such a breakthrough by abandoning the backsheet and developing the brand-new dual glass module. Trina Solar Vertex TSM-DEG21C.20 (670 W) framed dual-glass bifacial module

Bifacial modules: Global market share of glass-glass vs glass-transparent backsheet With the rapid development of the PV industry, leading companies, research institutes, and institutions of higher education are devoted to module design and process-specific production optimization to reduce module cost and improve module quality.