Chinese solar module manufacturer Longi has developed a heterojunction back contact (BC) solar cell using a laser-enhanced contact optimization process that reportedly has a total effective processing ...
In HJT cells, an n-type crystalline silicon (c-Si) wafer is sandwiched between intrinsic amorphous silicon (i-a-Si:H) layers. The front is coated with n-type microcrystalline silicon (μc-Si:H), while ...