ZNShine recently showcased a range of graphene-coated TOPCon PV modules, spanning a quarter-cut high-efficiency module, a busbar-free module for utility-scale projects, and a lightweight module aimed at roofs with load-bearing limits.
The 670 W module uses 264 G12R-size quarter-cut cells interconnected in a gapless design that increases the module's active area, reaching a maximum efficiency of 24.8%. Shorter cell busbars reduce resistance and lower power losses compared with half-cut cell designs. Open-circuit voltage is 50.90 V and short-circuit current is 16.54 A. The module is laminated with front and rear glass and framed in steel rather than aluminum for added mechanical durability in ground-mounted utility or C&I installations, and measures 2,382 x 1,134 x 30 mm.
The 750 W module uses 132 G12 half-cut cells without busbar metallization (0BB), a design ZNShine says increases active cell area and reduces silver consumption. It reaches a maximum efficiency of 24.14%, with an open-circuit voltage of 50.30 V and short-circuit current of 18.67 A. Also laminated with front and rear glass, it measures 2,384 x 1,303 x 30 mm and is pitched at large-scale utility projects.
For roofs with load-bearing limitations, ZNShine showed a lightweight rigid module built from 120 G12 half-cut cells, rated for a maximum power of 600 W at 23.22% efficiency. Measuring 2,279 x 1,134 x 30 mm, it weighs 7.74 kg/m² - up to 35% lighter than conventional modules - thanks to ultrathin glass and a customized lightweight frame.
All three modules share a thin graphene coating on the front glass. According to ZNShine, the coating's hydrophilic properties give the module surface a self-cleaning function, while also improving the underlying glass's light absorption by approximately 2.3%. The company also points to graphene's stable carbon atoms and crystalline structure as a source of added mechanical strength, toughening the glass and reducing the risk of microcracks during field operation and installation.
