1.2 GW
State-of-the-Art Facility
>25.2%
Efficiency
G12R
TOPCon Technology
Made In India
DCR Cells
Manufacturing Strength
Celloraa Energy is developing 1.2 GW of state-of-the-art facility with a future-ready solar cell manufacturing ecosystem focused on precision engineering, intelligent automation, and scalable renewable production aligned with global industry standards.
Current Capacity
Developing a 1.2 GW advanced solar cell manufacturing facility designed to support high-efficiency renewable energy production and future industrial scalability.
Scalable Infrastructure
Future-proof manufacturing architecture engineered for seamless multi-GW expansion and next-generation renewable manufacturing growth.
Advanced Equipment
Integrated with globally advanced manufacturing technologies, precision automation systems, and intelligent production workflows through Indo-German technology collaborations.
Strict Quality Control
Built around advanced process monitoring, precision engineering standards, and rigorous quality assurance systems to ensure high-performance and reliable solar cell manufacturing.
Global Partnerships
Rena Technologies |
Centrotherm |
ISC Konstanz |
| Powered by German-engineered wet processing technology for superior cell quality and process reliability. |
Advanced German thermal engineering for high-efficiency TOPCon solar cell manufacturing. | Supported by one of Europe’s leading photovoltaic research and technology institutions |
| Sustainable and water-efficient manufacturing infrastructure aligned with future global ESG standards |
Partnered with globally recognised photovoltaic process engineering experts. | Advanced process engineering support for optimised manufacturing performance |
| Industrial-grade manufacturing systems designed for scalable high-efficiency TOPCon production | Precision thin-film engineering designed for next-generation solar cell efficiency. | Research-backed technology strategy aligned with the future of photovoltaics. |
| Precision-engineered processing systems supporting next-generation photovoltaic performance | Technology ecosystem aligned with internationally benchmarked solar manufacturing standards | Engineering validation and technical expertise supporting high-quality solar manufacturing. |
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Manufacturing of Celloraa TOPCon G12R Solar Cell
Celloraa Energy’s TOPCon G12R solar cells are manufactured through a highly controlled sequence of precision engineering, advanced passivation technologies, intelligent automation, and scalable renewable manufacturing systems designed for high-efficiency energy generation.
Wafer Preparation, Texturing & Cleaning
High-purity N-Type silicon wafers undergo precision cleaning, saw damage removal, alkaline texturing, and surface engineering to create micro-pyramid structures that improve light trapping and photon absorption.
Boron Diffusion & Junction Formation
The wafers are processed in high-temperature diffusion furnaces to create the boron-diffused emitter and p-n junction required for photovoltaic electricity generation.
Selective Emitter (SE) Laser Doping
Advanced laser doping systems create localised heavily doped regions beneath contact areas while maintaining optimised passivation across the remaining surface.
Tunnel Oxide Formation
An ultra-thin silicon dioxide (SiO₂) tunnel oxide layer is formed to reduce recombination losses while enabling efficient carrier transport through quantum tunnelling.
Doped Poly-Silicon Deposition (TOPCon Formation)
Doped polysilicon layers are deposited using plasma-assisted deposition technologies to create the carrier-selective passivated contact structure central to TOPCon architecture.
Annealing & Dopant Activation
The wafers undergo thermal annealing processes to activate dopants, improve crystallinity, and stabilize the tunnel oxide/poly-Si interface.
Precision Cleaning & Surface Conditioning
Advanced BOE (Buffered Oxide Etch) cleaning processes remove residual oxides and surface contaminants before passivation and coating stages.
ALD Passivation Coating
Atomic Layer Deposition (ALD) systems apply Al₂O₃ passivation films to minimize surface recombination and improve carrier lifetime.
PECVD Front & Rear Coating
Plasma Enhanced Chemical Vapor Deposition (PECVD) systems apply anti-reflective and passivation coatings to optimize optical absorption and bifacial performance.
Metallization & Contact Formation
Precision screen-printing systems apply silver and aluminum conductive contacts followed by high-temperature firing for efficient current collection.
Testing, Sorting & Quality Validation
Every solar cell undergoes advanced electrical testing, efficiency validation, and intelligent sorting systems to ensure manufacturing consistency and high-performance standards.