19.6% Cast Mono-MWT Solar Cells and 268 W Modules

Nowadays, increasingly new technologies are adopted to improve the efficiency of crystalline silicon solar cells, for example, selective emitter (SE) cells with the advantage of lower contact resistance and higher blue response and metal wrap through (MWT) cells with the advantage of lower shading area and lower series resistance losses in the module. Cast monosilicon material is also getting increasingly popular because of its higher efficiency and lower cost. In our study, combining SE with MWT technology, the maximum efficiency of cast monocells has reached up to 19.6%. Further modification with non-UV cut ethylene-vinyl acetate copolymer and anti-reflection-coated glass, the maximum module power of 268 Wis achieved with 19.2% efficiency cells.