What is silicon heterojunction (Si HJ) solar?

With record-breaking efficiencies approaching 27% 1, silicon heterojunction (Si HJ) solar cells are rapidly becoming one of the most promising next-generation technologies. A key driver for their excellent performance is the electronic passivation of the crystalline silicon (c-Si) by a thin layer of hydrogenated amorphous silicon (a-Si:H).

What is a passivating contactsin heterojunction (HJ) solar cell?

Passivating contactsin heterojunction (HJ) solar cells have shown great potential in reducing recombination losses, and thereby achieving high power conversion efficiencies in photovoltaic devices.

Are interdigitated back contact (IBC) silicon heterojunction (Si-HJ) solar cells based on N-?

This study deals with the development and optimization of Interdigitated Back Contact (IBC) Silicon Heterojunction (Si-HJ) solar cells based on n-type crystalline silicon (c-Si) substrates. Both one-dimensional (1D) and 2D aspects of IBC Si-HJ cells are explored in this work.

What makes Panasonic HJT solar cells so efficient?

In early 2014, Panasonic achieved record efficiency of HJT cells by using a high-quality monocrystalline silicon wafer . The essence of heterojunction solar cells is the formation of p–n junctions from materials with different values of the band gap.

Are c/Si HJ solar cells a promising field?

The state-of-the-art C/Si HJ solar cell has been a promising field and the PCE has reached over 23% with an astonishing speed. However, several challenges remain for C/Si HJ solar cells.

How do solar cells form a heterojunction?

In the first design version of these solar cells, the heterojunction was formed by using the flat n-type crystalline silicon wafer with a thin layer of p-type amorphous hydrogenated silicon (a-Si:H) deposited on its surface . The efficiency of this structure reached 12.3%.