Solar hit cells and modules

What is a hit solar cell?

The HIT solar cell uses high-quality and very-thin amorphous silicon (a-Si) layers to form the Hetero-Junction. In addition, a high-quality intrinsic a-Si layer can effectively passivate the surface dangling bonds of the crystalline silicon substrate. As a result, this cell has achieved a high Voc of more than 700 mV .

What is a hit® photovoltaic module?

Panasonic photovoltaic modules HIT® feature an innovative hetero-junction cell structure made of mono-crystalline and amorphous silicon layers. Ultra-thin amorphous silicon layers prevent recombinations of electrons, keeping carrier loss to an absolute minimum. As a result, HIT® conversion efficiency ratings are among the highest available today.

What is the structure of HIT solar cell?

The structure of the HIT solar cell is shown in Fig. 1. An intrinsic amorphous-Si layer, a doped amorphous-Si layer, and a TCO layer are deposited on both sides of a crystalline-Si substrate. Grid electrodes are also fabricated on both sides of the doped amorphous-Si layer.

What is heterojunction with Intrinsic Thin layer (hit) cell?

And this new kind of solar cell was named heterojunction with intrinsic thin layer (HIT) cell. Ever since then, the efficiency of HIT cells was gradually optimized. From 2017 to 2019, the efficiency of HIT cells from Hanergy in China increased steadily from 22.85% to 25.11% (Ru et al. 2020).