TEJ BiFacial M10R
560–585 Wp · up to 22.8% efficiency
ExploreModule Technology
N-TOPCon Technology
Tunnel oxide passivated contact cells. Higher efficiency, lower degradation, more energy.
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The Technology
Inside the TOPCon Cell
TOPCon (Tunnel Oxide Passivated Contact) solar cells integrate advanced passivation techniques to enhance energy conversion. An ultra-thin oxide layer forms a tunnel for electrons, minimising recombination and optimising power output — with exceptional thermal stability for consistent long-term performance.
Saatvik’s 182.3 × 210 mm N-type cells are crafted with atomic-level layering of tunnel oxides and polysilicon films, AI-powered defect inspection and high-throughput automated lines — reaching 25% average cell conversion efficiency and avg. 9.55 Wp/cell.
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N-Type TOPCon cell architecture
Head to Head
N-TOPCon vs Mono PERC
Measured across Saatvik’s own module ranges, N-Type TOPCon outperforms P-Type Mono PERC on every metric that drives project economics.
MetricN-TOPConMono PERC
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additional energy from bifacial glass-to-glass generation — 10–30% more power than comparable P-Type modules.
Why N-TOPCon
Six Advantages of Going N-Type
Tunnel Oxide Passivated Contact
An ultra-thin oxide layer forms a tunnel for electrons, minimising recombination and optimising power output — with atomic-level layering of tunnel oxides and polysilicon films.
Stronger Low-Light Performance
N-type cells keep generating in early morning, overcast and low-irradiance conditions, delivering superior energy yield per installed watt across the day.
Better Bifaciality
Glass-to-glass N-TOPCon construction harvests light from both faces, yielding 10–30% more energy than comparable P-Type modules on reflective ground.
Exceptional Thermal Stability
A −0.30 %/°C power temperature coefficient versus −0.36 %/°C for PERC sustains output in India's hottest utility-scale sites.
Lower Degradation
Under 1% first-year and under 0.40% annual degradation — versus under 2% and 0.55% for PERC — protect project yield over a 30-year life.
Certified & Bankable
IEC-qualified, CE-marked modules built in India with 100% EL inspection, backed by 12-year product and 30-year linear performance warranties.
TOPCon Portfolio
Our Module Range
Compare Specifications
See how our solar module technologies stack up across power output, efficiency, and warranty coverage.
| Specification | TEJ BiFacial M10R | TEJ PLUS BiFacial G12R |
|---|---|---|
| Cell Technology | N-Type TOPCon (M10R) | N-Type TOPCon (G12R) |
| Module Efficiency | Up to 22.8% | Up to 23.69% |
| Power Output | 560–585 Wp | 600–640 Wp |
| Number of Cells | 144 | 132 |
| Configuration | Bifacial, glass-to-glass | Bifacial, glass-to-glass |
| Temp. Coefficient (Pmax) | −0.30 %/°C | −0.30 %/°C |
| Max System Voltage | 1500 V DC | 1500 V DC |
| Annual Degradation | < 0.40% / year | < 0.40% / year |
| Product Warranty | 12 years | 12 years |
| Performance Warranty | 30 years | 30 years |
Frequently Asked Questions
TOPCon (Tunnel Oxide Passivated Contact) cells add an ultra-thin tunnel oxide layer and polysilicon film to an N-type silicon wafer. This passivation minimises electron recombination, lifting average cell conversion efficiency to 25% and module efficiency to 23.69% while improving thermal stability and longevity.
Compared with Saatvik's Mono PERC modules, N-TOPCon delivers higher efficiency (up to 23.69% vs 21.48%), a better temperature coefficient (−0.30 vs −0.36 %/°C), lower degradation (under 0.40% vs 0.55% per year) and a longer 30-year performance warranty — with 10–30% more energy from bifacial gain.
Two bifacial glass-to-glass ranges: TEJ BiFacial on the M10R wafer (560–585 Wp, up to 22.8% efficiency, 144 cells) and TEJ PLUS BiFacial on the larger G12R wafer (600–640 Wp, 132 cells, up to 23.69% efficiency). Both carry 12-year product and 30-year performance warranties.
Yes. The −0.30 %/°C power temperature coefficient limits hot-climate losses, and N-type cells maintain strong output in early morning, overcast and low-irradiance conditions — key advantages for Indian utility-scale and C&I sites.
Both TEJ ranges are designed for seamless, plug-and-play compatibility with standard racking systems, trackers and string or central inverters, with 1500 V DC system voltage and MC4-compatible connectors.