What is HJT technology for solar modules?

Maysun HJT solar cell shape display. HJT is a special PN junction that combines two different technologies into one battery: a crystalline silicon battery sandwiched between two layers of amorphous "thin film" silicon.

What is HJT Technology?

HJT solar cells have double-sided structure design which can absorb incident light and scattered light from both sides, using a PECVD, very thin silicon intrinsic passivation layer and P-type silicon doped layer are formed on the top side of wafer-type monocrystalline silicon N after texturing and surface cleaning, then on the other side a very thin intrinsic silicon passive layer and N-type silicon doped layer is deposited.
After deposition of amorphous silicon layer stacks, PVD magnetron sputtering coating technology is applied to deposit transparent oxide conductive film (TCo) and metal stack on both sides of the cells.
Finally, the metal grids on both sides are formed by our innovative metallization technology.

Maysun HJT solar cell advantage: efficiency is as high as 24%-25%. 210mm large size silicon wafer, and slow attenuation speed. The HJT solar cell is a double-sided design, and the film layer on the back will increase a lot of power due to the sunlight reflected on the ground. HJT cells are thinner, about 160~100μm.

Advantages of HJT Technology

High efficiency
Large size
Low attenuation
High double-sided ratio
Less process
Hinning

Maysun HJT solar modules face to face comparison. HJT has a longer power generation life, so it has a higher output than any other high-efficiency technology

HJT Photovoltaic Modules

Using a high efficiency heterojunction solar cell, up to more than 21.5% module efficiency.
Leading Half-cut HJT cell technology.
The more stable feed temperature coefficient of -0.24% results in a stable yield gain.
Using N-type wafer, no LID caused by B-O pair
Excellent PID resistance.
The 85% double-sided factor brings greater yield gain from back to back.

The development direction of the high-efficiency solar cell industry. At present, the most widely used single crystal PERC battery is the P-type single crystal silicon battery, and new solar cell technologies such as TOPCon, HJT, IBC, etc. mainly refer to the N-type single crystal silicon battery.

Development Direction Of High Efficiency Solar Cell Industry

Maysun HJT solar cell structure diagram. HJT is a special PN junction, which is formed by amorphous silicon and crystalline silicon materials. It is a kind of N-type battery by depositing an amorphous silicon film on crystalline silicon. HJT battery structure diagram: front electrode, TCO, silicon dioxide layer, passivation layer, n-type diffusion layer, P-type crystalline silicon, passivation layer, silicon nitride layer, back electric field layer, back electrode.

The HJT Technology Structure Diagram