HJT Solar Photovoltaic Panel

Certifications: IEC 61215, IEC 61730, CE, TUV, ISO 9001, ISO 14001, IEC 62941

Cell Type: N-type Heterojunction (HJT)

Module Power Range: 440W ~ 770W (varies by model and format)

Module Conversion Efficiency: 22.5% ~ 25.0%

Maximum System Voltage: DC 1500V / 2000V (selected models)

Power Warranty: 30-year linear power warranty

Product Warranty: 15 years

Product Description

HJT (Heterojunction) solar photovoltaic panels are high-efficiency PV modules employing a composite structure of crystalline silicon and amorphous silicon thin films. The core structure deposits intrinsic amorphous silicon passivation layers and doped amorphous silicon layers on both sides of an N-type monocrystalline silicon wafer, forming a "crystalline silicon-thin film" heterojunction that achieves superior surface passivation and extremely high open-circuit voltage. This technology combines the high stability of crystalline silicon cells with the high efficiency of thin-film cells. Mass production cell efficiency has surpassed 26%, with module efficiency reaching 22.5%~25.0%, making it one of the most outstanding power generation performance solutions among current high-efficiency PV technology routes.

HJT modules feature an extremely low temperature coefficient of -0.24%/℃, delivering significant energy yield advantages in high-temperature environments. Test data from Risen Energy's 740W Hyper-ion Pro module at the SGS verification base in Saudi Arabia shows a power generation gain of over 4.09% compared to TOPCon modules, with the August high-temperature month reaching a monthly average gain of 6.04%, fully validating HJT's "more gain when hotter" characteristic. Meanwhile, HJT cells are inherently free from Light-Induced Degradation (LID) and Potential-Induced Degradation (PID), with first-year degradation ≤1% and subsequent annual linear degradation of only 0.30%~0.35%, retaining over 90.3% of rated output after 30 years.

The modules adopt a bifacial dual-glass structure with bifaciality reaching 85%~95%, delivering significant rear-side power gain on high-albedo surfaces such as sand, snow, and concrete. Huasun's Himalaya series HSN-212-B132 module utilizes large-format G12 wafers and a negative-gap layout, increasing effective cell area by 2.1% and boosting power output by approximately 20W compared to comparable configurations. Selected models support 2000V system voltage, which reduces cable, combiner, pile-foundation, and land-use requirements compared to the mainstream 1500V platform, delivering BOS cost savings of up to CNY 0.15/W in western China projects.

Technical Advantages

Ultra-Low Temperature Coefficient — -0.24%/℃, significant yield gain in high-temperature environments, over 4% gain vs. TOPCon in verified projects

No LID/PID Degradation — Heterojunction structure inherently free from Light-Induced and Potential-Induced Degradation, first-year degradation ≤1%, annual linear degradation only 0.30%~0.35%

Ultra-High Bifaciality — 85%~95% bifaciality, significant rear-side gain, especially suitable for high-albedo surfaces

High Conversion Efficiency — Mass production cell efficiency surpassing 26%, module efficiency 22.5%~25.0%

Superior Low-Light Performance — Amorphous silicon passivation layer enhances carrier collection under low irradiance

2000V System Voltage — Selected models support 2000V system architecture, reducing BOS costs and improving project IRR

Low Carbon Footprint — Full lifecycle carbon footprint reduced to 376.5kg eq CO₂/kWc

Product Parameters

The following are general specifications for mainstream HJT PV modules, classified by application scenario:

Application Scenarios

Utility-Scale Ground-Mounted Plants — 132-cell format, 700W~770W, 2000V system voltage support, reducing BOS costs and LCOE. Leascend's Uranus Pro bifacial dual-glass HJT module achieves bifaciality near 95% with mass-deliverable power of 745W+, suitable for large ground-mounted and C&I rooftop applications

Commercial & Industrial Distributed PV — Suitable for factory, industrial park, and shopping mall rooftops, with high bifaciality utilizing reflected light. The Venus Pro all-black module is suitable for C&I rooftops, high-end residential, and cultural tourism projects with mass-deliverable power of 550W+

High-Temperature & High-Irradiance Regions — Ultra-low temperature coefficient (-0.24%/℃) delivers significant yield gains in the Middle East, Southeast Asia, and South America, with over 6% gain vs. TOPCon in Saudi verified projects

High-Albedo Ground-Mounted Plants — 85%~95% bifaciality delivers significant rear-side gain on sand, snow, and concrete surfaces, suitable for desert and high-latitude snow projects

Offshore PV & Fishery PV — Huasun has launched HJT "sea-light modules" empowering offshore PV applications

Vertical Agrivoltaics — Huasun's Kunlun G12R-132 ultra-high bifaciality vertical module integrated with Sentnet's vertical PV system technology for GW-level vertical agrivoltaic projects

High-End Residential & BIPV — LONGi's Hi-MO S10 residential HJT back-contact module achieves 25% efficiency with all-back-contact single-wire welding, reducing hot-spot temperature by 38.75% vs. TOPCon

Cultural Tourism & Aesthetic Projects — All-black dual-glass HJT modules combine high efficiency with aesthetics, suitable for cultural tourism and high-end residential projects

System Components

HJT PV modules consist of N-type heterojunction cells (crystalline silicon substrate + intrinsic amorphous silicon passivation layer + doped amorphous silicon layer), ultra-white anti-reflective coated tempered glass, EVA/POE/UV-conversion film, rear glass, anodized aluminum alloy frame, IP68 junction box, and MC4-compatible connectors. Cells are soldered in series/parallel using Multi-Busbar (SMBB) or 0BB busbar-less technology, laminated and encapsulated, then assembled with the frame. Selected models employ negative-gap layout and butyl rubber edge sealing to increase effective cell area and moisture resistance. The module outputs DC power through MC4 connectors, directly connectable to PV inverters or combiner boxes, suitable for grid-connected, off-grid, and hybrid power generation systems.