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Heterojunction technology

The most efficient and promising silicon-based industrial technology for solar energy

25%
Cell efficiency
90%
Bifaciality factor
>100
Technologically advanced units

Heterojunction technology

Unigreen Energy's R&D Centre has been working on its development and industrial production since 2017

25%
Cell efficiency
>90%
Bifaciality factor

HJT PV Technology advantages

up to 25%
up to 25%
Due to the high efficiency of HJT production, you not only save space for placement, but make it possible to install fewer support structures
-0.26%  / °C
-0.26% / °C
Low temperature coefficient leads to 10% increase in output in hot climates and low light conditions
>90%
>90%
Ultra High bifaciality allows you to increase electricity generation up to 20%, which provides higher payback periods
over 15 years
over 15 years
Extended product warranty for HJT products

HJT in details

Front side and rear side metallization Front side and rear side metallization
Front side and rear side metallization
Conductive layer of transparent conductive oxide Conductive layer of transparent conductive oxide
Conductive layer of transparent conductive oxide
Amorphous silicon semiconductor layer Amorphous silicon semiconductor layer
Amorphous silicon semiconductor layer
Textured N-type monocrystalline silicon wafer Textured N-type monocrystalline silicon wafer
Textured N-type monocrystalline silicon wafer
Front side and rear side metallization
Conductive layer of transparent conductive oxide
Amorphous silicon semiconductor layer
Textured N-type monocrystalline silicon wafer
Front side and rear side metallization Front side and rear side metallization
Front side and rear side metallization
Conductive layer of transparent conductive oxide Conductive layer of transparent conductive oxide
Conductive layer of transparent conductive oxide
Amorphous silicon semiconductor layer Amorphous silicon semiconductor layer
Amorphous silicon semiconductor layer
Textured N-type monocrystalline silicon wafer Textured N-type monocrystalline silicon wafer
Textured N-type monocrystalline silicon wafer

HJT vs. mass-market crystalline PV technologies

Lifespan

Average lifetime values ​​for cell type without loss of efficiency
up to 25 years
up to 30 years

Temperature Coefficient

Average temperature coefficient ​​for cell type
-0.38%/°C
-0.26%/°C

Highest Recorded Efficiency

Highest cell efficiency ever recorded during operational usage
23.5%
25%

Market Share

36%
10%

HJT cells production process

Our Assets

Our assets are one of the keys to Unigreen’s leadership and success. We manage our assets using the highest health, safety and environmental standards.

Our factory

The largest manufacturer of HJT products for solar energy in Europe
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Unigreen BNK Electric

Electrical plant for solar energy solutions
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