TOPCon G12 R
TOPCon (Tunnel Oxide Passivated Contact) is an advanced solar cell technology designed to improve the efficiency, reliability, and long-term performance of photovoltaic cells.
TOPCon G12R is an advanced solar cell format that combines:
- N-Type TOPCon cell technology with
- G12R rectangular wafer design
- To deliver higher module efficiency, improved power density, and optimized module manufacturing compatibility.
>25.2%
High Efficiency
Lower Degradation
Minimal LID/PID
Better Thermal Stability
Lower Temp. Coefficient
Bifacial Performance
Higher Energy Yield
Know More about our TOPCon G12R
TOPCon (Tunnel Oxide Passivated Contact) is an advanced next-generation solar cell technology designed to improve the efficiency, reliability, and long-term performance of photovoltaic systems.
When combined with the advanced G12R rectangular wafer format, TOPCon technology delivers higher module power density, optimized module space utilization, and improved large-scale renewable energy performance.
TOPCon G12R technology is built using N-Type silicon wafer architecture combined with an ultra-thin tunnel oxide layer and a doped polysilicon passivated contact structure. This advanced design significantly reduces electron recombination losses inside the solar cell, allowing more sunlight to be converted into usable electricity with higher efficiency and improved long-term stability.
The optimized G12R rectangular cell geometry further enhances module packing efficiency, reduces inactive spacing between cells, and supports higher power output in modern photovoltaic module configurations.
Compared to conventional PERC solar cells, TOPCon technology offers:
- Higher energy conversion efficiency
- Lower degradation over time
- Better thermal stability
- Improved bifacial performance
- Higher long-term energy yield
- Enhanced low-light performance
One of the major advantages of TOPCon solar cells is their ability to achieve efficiencies exceeding 25%, making them among the most advanced commercially scalable solar technologies available today.
Advanced technology
TOPCon Technology
Precision-engineered N-Type TOPCon technology designed to deliver higher efficiency, lower degradation, and long-term renewable energy performance through advanced passivated contact architecture.
No Lower Induced Degradation (LID) Effect
N-Type TOPCon cells are designed to minimize Light Induced Degradation (LID), helping maintain stable power generation and long-term energy reliability over the lifecycle of the solar cell.
Anti Potential Induced Degradation (PID) Technology
Advanced Anti-PID (Potential Induced Degradation) architecture improves operational durability and protects long-term module performance in high-voltage and challenging environmental conditions.
Lower Encapsulation Loss
Optimized cell architecture and surface passivation help reduce encapsulation losses, enabling better photon absorption and improved overall energy conversion efficiency.
Key Features
Ultra-High Efficiency
Advanced N-Type TOPCon architecture engineered to achieve higher energy conversion efficiency for optimized renewable power generation and long-term energy yield.
N-Type Technology Advantage
Built using advanced N-Type silicon wafers designed to reduce degradation, improve carrier lifetime, and deliver superior long-term performance compared to conventional cell technologies.
Bifacial Capability
Designed to capture sunlight from both the front and rear sides, enabling additional energy generation through reflected and diffused light absorption.
Excellent Low Light Performance
Optimized cell architecture enables efficient power generation even during low-light conditions such as cloudy weather, early mornings, and late afternoons.
Superior Temperature Performance
Lower temperature coefficient and improved thermal stability help maintain higher operational efficiency in high-temperature environments.
Optimised G12R Design
Advanced G12R rectangular cell design supports better module space utilisation, higher power density, and compatibility with modern high-efficiency module configurations.
Lower Degradation Rate
Advanced passivated contact architecture helps reduce long-term power degradation and improves operational reliability throughout the lifecycle of the solar cell.
Higher Energy Yield
Generates Power from both the front and rear sides. Designed to maximise energy generation through improved charge carrier movement and reduced recombination losses.
Better Thermal Stability
Engineered to maintain stable energy output and operational efficiency in high-temperature environmental conditions.
660W+
High-Power Modules
Delivering >25.2% efficiency with 1.2 GW manufacturing strength, engineered for the future of high-performance solar.
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How TOPCon Solar Cells Work
TOPCon solar cells work by improving the movement and collection of electrical charge carriers generated when sunlight hits the silicon wafer.
The technology includes:
N-Type Silicon Wafer
Ultra-Thin Tunnel Oxide Layer
Passivated Polysilicon Contacts
Anti-Reflective Coating
Front & Rear Contact Structures
TOPCon VS PERC
N-Type TOPCon technology represents the next evolution in solar cell innovation, delivering higher efficiency, improved bifacial performance, lower degradation, and superior long-term energy yield compared to conventional PERC technology
|
PERFORMANCE PARAMETER | TOPConN-Type Technology | PERCConventional Technology |
|---|---|---|
| Technology Base | N Uses N-type silicon with tunnel oxide + passivated contacts. | P Uses P-type silicon with rear passivation layer. |
| Cell Efficiency | Up to 26% | 22–24% |
| Surface Passivation | Advanced Tunnel Oxide Passivated Contact (TOPCon) | Standard Passivation |
| Temperature Performance | Superior | Standard |
| Annual Power Degradation | ≤ 0.40% | ~ 0.45% |
| Bifacial Performance | > 80% | ~ 70% |
| Low Light Performance | Excellent | Good |
| Long-Term Energy Yield | Higher | Moderate |
| Future Technology Readiness | Next-Generation Technology | Mature Technology |
When sunlight strikes the solar cell
- Photons generate electron-hole pairs inside the silicon wafer.
- The tunnel oxide and passivated contacts reduce recombination losses.
- Electrons move more efficiently through the optimized contact structure.
- More electrical energy is collected and converted into usable power.
- This advanced structure improves voltage, current flow, and overall solar cell efficiency.
Application - Enabling High-Performance Solar Modules for Diverse Energy Applications
Celloraa Energy’s advanced N-Type TOPCon solar cells are engineered for integration into high-efficiency solar modules used across utility-scale, commercial, industrial, and distributed energy projects.
Utility-Scale Solar Power Plants
Optimised for large-scale solar farms requiring high energy yield, enhanced bifacial gain, and superior long-term performance in demanding environmental conditions.
Commercial & Industrial (C&I)
Supports high-efficiency solar modules designed for factories, warehouses, industrial parks, commercial buildings, and institutional infrastructure where reliable energy generation and operational efficiency are critical.
Residential Rooftop Solar Modules
Enable premium rooftop solar modules with improved module efficiency, better low-light performance, and enhanced space optimisation for residential installations.
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