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Solarnplus: Pioneering the Future of Solar Cell Technology

In the rapidly evolving world of renewable energy, solar power stands at the forefront of innovation. As global demand for clean, sustainable energy solutions continues to rise, companies like Solarnplus are leading the charge in developing cutting-edge solar cell technology. This blog post delves into the groundbreaking advancements made by Solarnplus, exploring our product iterations, technological advantages, and future roadmap in the solar industry.

Solarnplus, also known as Xuhe (旭合) in Chinese, has emerged as a key player in the solar cell manufacturing sector. With a strong focus on research and development, the company has consistently pushed the boundaries of solar cell efficiency and performance. Our commitment to innovation has positioned them as industry leaders, particularly in the realm of N-type TOPCon (Tunnel Oxide Passivated Contact) technology.

2. From PERC to TOPCon

Solarnplus’s journey in solar cell technology showcases a clear progression from traditional P-type PERC (Passivated Emitter and Rear Cell) to advanced N-type TOPCon cells. This evolution reflects the industry’s broader shift towards higher efficiency and more durable solar solutions.

P-type PERC Cells:
– Model: PP182A-R10D1
– Size: 182.2mm x 182.2mm
– Efficiency: 23% – 23.5%
– Key features: High conversion efficiency, low temperature coefficient, low encapsulation loss

N-type TOPCon Cells:
– Models: TN182A-R16D1, TN182B-Q16D1, TN182C-Q16D1
– Sizes: Varying from 182.2mm x 182.2mm to 191.6mm x 182.2mm
– Efficiency: 26% – 26.7%
– Key features: Higher conversion efficiency, lower temperature coefficient (as low as -0.31%/°C), zero light-induced degradation, superior PID resistance, lower encapsulation loss

This transition from PERC to TOPCon technology demonstrates Solarnplus’s commitment to developing more efficient and reliable solar cells, catering to the growing demand for high-performance photovoltaic systems.

3. Technological Innovations: The SNP Series

Solarnplus’s technological prowess is evident in our SNP (Solarnplus N-type Passivated contact) series, which represents a step-by-step improvement in our TOPCon cell technology. Let’s explore the evolution of the SNP series:

SNP1.0 Technology (2023 H1):
– Efficiency: 25.0% – 25.7%
– Key innovations: Boron-doped SE technology, Poly-MPT technology
– Improvement: 0.3% increase in cell conversion efficiency

SNP2.0 Technology (2023 H2):
– Efficiency: 25.5% – 26.2%
– Key innovations: Laser-enhanced metallization technology, Gradient anti-reflection film technology
– Improvement: 0.5% increase in cell conversion efficiency

SNP3.0 Technology (2024 Q1):
– Efficiency: 25.8% – 26.5%
– Key innovations: Innovative patterning technology, Advanced emitter technology
– Improvement: 0.3% increase in cell conversion efficiency

SNP4.0 Technology (2024 Q2):
– Efficiency: 26.2% – 26.7%
– Key innovation: Low-temperature, low-source process
– Improvement: 0.2% increase in cell conversion efficiency

This systematic approach to technology development showcases Solarnplus’s dedication to continuous improvement and innovation in the solar cell industry.

4. Deep Dive into Solarnplus’s Technological Advantages

To truly appreciate Solarnplus’s contributions to solar cell technology, let’s examine some of our key innovations in detail:

Poly-MPT Technology:
This technology focuses on fine-tuning the doping concentration and depth of the N-type inner expansion layer, as well as the in-situ doping concentration of the inner and outer layers of Poly. The result is superior back surface passivation and lower back contact resistance, leading to improved overall cell performance.

Laser-Enhanced Metallization Technology:
This advanced technique minimizes damage to the anti-reflection film, ensuring better front surface passivation. It also allows for shallower silver grid line electrode local penetration depth, significantly expanding the compatibility range of the boron emitter. The use of pure silver grid lines without aluminum enhances the reliability of both the cell and the module.

Continuous Gradient Anti-Reflection Film Technology:
This innovation optimizes the reduction of incident light reflection, maximizing the short-circuit current of the cell and module. It also provides a more uniform color appearance, resulting in a more aesthetically pleasing product.

Innovative Patterning Technology:
By employing ultra-fine silver grid line electrodes, this technology reduces front surface shading, leading to higher short-circuit current in the cell. The denser silver grid lines match higher boron emitter sheet resistance, ensuring excellent open-circuit voltage and good fill factor.

5. Solarnplus’s Competitive Edge: Efficiency and CTM Comparison

Solarnplus’s commitment to excellence is evident when comparing our products to those of other major manufacturers in the industry. Let’s look at two key metrics: cell efficiency and Cell-to-Module (CTM) ratio.

Cell Efficiency:
In standardized testing conditions, Solarnplus’s cells consistently demonstrate industry-leading efficiency. Our test efficiency is concentrated in the range of 26.3% – 26.5%, outperforming many competitors whose efficiencies typically fall between 25.8% and 26.2%.

Cell-to-Module (CTM) Ratio:
The CTM ratio is a crucial indicator of how well a cell’s performance translates into module performance. Solarnplus excels in this area, with our cells showing a CTM ratio of 98.59%, higher than most industry peers who range from 97.41% to 98.07%.

Module Power Output:
When comparing module power output under identical test conditions, Solarnplus-made cells consistently produce modules with the highest power levels in the industry. Our modules typically achieve power outputs of 591.6W, while competitors range from 582.2W to 589.6W.

These comparisons underscore Solarnplus’s position as a leader in solar cell and module technology, offering products that consistently outperform industry standards.

6. Solarnplus’s Product Roadmap: Looking to the Future

Solarnplus’s vision for the future of solar cell technology is clearly outlined in our product roadmap. The company plans to continue innovating and expanding our product line to meet evolving market demands:

2023 – 2024 Q1:
– Focus on 182.2mm x 182.2mm cells with an area of 33,081 mm²
– Transition to 182.2mm x 183.75mm cells with areas ranging from 33,305 to 33,471 mm²

2024 Q2 – Q3:
– Introduction of 182.2mm x 191.6mm cells with an area of 34,905 mm²
– Launch of 182.2mm x 210mm cells with an area of 38,224 mm²

This roadmap demonstrates Solarnplus’s commitment to developing larger, more efficient solar cells to meet the growing demand for higher-powered solar modules.

7. Efficiency Projections: A Bright Future

Solarnplus’s dedication to continuous improvement is evident in our efficiency projections for both P-type PERC and N-type TOPCon cells:

P-type PERC Cells:
– Current average warehouse efficiency: 23.3%
– Projected efficiency by end of 2025: Approaching 23.5%

N-type TOPCon Cells:
– Current average warehouse efficiency: 24.8%
– Projected efficiency by end of 2025: Approaching 25.5%

These projections highlight Solarnplus’s commitment to pushing the boundaries of solar cell efficiency through ongoing technological iterations and process optimizations.

8. The Impact of Solarnplus’s Innovations on the Solar Industry

Solarnplus’s advancements in solar cell technology have far-reaching implications for the broader solar industry:

1. Increased Energy Yield: Higher efficiency cells translate to greater energy production from the same surface area, making solar power more viable in space-constrained environments.

2. Improved Cost-Effectiveness: As cell efficiencies increase, the cost per watt of solar power decreases, making solar energy more competitive with traditional power sources.

3. Enhanced Durability: Innovations like zero light-induced degradation and superior PID resistance contribute to longer-lasting solar installations, improving the long-term value proposition of solar energy.

4. Aesthetic Improvements: Technologies like the gradient anti-reflection film not only boost performance but also enhance the visual appeal of solar panels, potentially increasing adoption in residential and commercial settings.

5. Pushing Industry Standards: By consistently outperforming industry averages, Solarnplus is helping to raise the bar for the entire solar industry, driving competition and innovation.


Solarnplus stands at the forefront of solar cell technology, driving innovation and setting new standards for efficiency and performance. Our journey from P-type PERC to advanced N-type TOPCon cells, coupled with our SNP series of technological innovations, showcases our commitment to pushing the boundaries of what’s possible in photovoltaic technology.

As the world increasingly turns to renewable energy sources to combat climate change and achieve energy independence, companies like Solarnplus play a crucial role in making solar power more efficient, affordable, and accessible. our roadmap for future development promises even greater advancements, paving the way for a brighter, cleaner energy future.

By consistently outperforming industry standards and projecting steady improvements in cell efficiency, Solarnplus is not just participating in the solar revolution – they’re leading it. As we look to a future powered by renewable energy, innovations from companies like Solarnplus will be key to realizing the full potential of solar power.