Tiling Ribbon Technology or ‘TRT’ is an innovation in solar panel manufacturing aimed at improving the efficiency and aesthetics of photovoltaic modules. This technology uses flat, solderless conductive ribbons to connect photovoltaic cells together, replacing traditional soldering methods.
The use of these conductive tapes offers several advantages. Firstly, it reduces efficiency losses due to soldering, and improves electrical conductivity between cells. By avoiding soldering, Tiling Ribbon Technology also increases the active surface area of cells, optimizing sunlight capture and conversion into electricity.
The benefits of Tiling Ribbon Technology
The main benefit of Tiling Ribbon Technology lies in improving the efficiency of photovoltaic solar panels and optimizing their design. This technology offers several advantages:
- Improved cell efficiency: It increases the active surface area of photovoltaic cells by eliminating traditional soldering and using flat conductive ribbons to connect the cells together. By reducing the shadow cast by welds and maximizing the cells’ exposure to sunlight, light absorption and the conversion of solar energy into electricity are improved.
- Reduced electrical losses : Conductor tapes are designed to offer low electrical resistance, reducing Joule effect losses and improving overall solar panel efficiency. In addition, the elimination of traditional soldering eliminates potential high-resistance contact points and minimizes electrical losses.
- Increased durability and reliability : Solderless connection of photovoltaic cells reduces the mechanical and thermal stresses associated with soldering, thus reducing the risk of cracking and cell degradation over time. As a result, Tiling Ribbon Technology improves the durability and reliability of solar panels.
- Aesthetics and integration : The use of flat, solderless conductive tapes gives solar panels a more homogeneous, aesthetically pleasing appearance. This can facilitate the integration of solar panels into buildings and infrastructure, particularly in architectural applications where appearance is essential.
The challenges of panel design using TRT
Designing solar panels with Tiling Ribbon Technology requires careful attention to materials, cell layout, thermal management and production costs to ensure optimum efficiency and sustainable profitability:
- Solderless conductive ribbons: Designers need to select appropriate conductive and adhesive materials for the ribbons, guaranteeing a reliable and durable electrical connection between photovoltaic cells, while withstanding harsh environmental conditions.
- Optimizing active surface area: Tiling Ribbon Technology aims to increase the active surface area of cells by eliminating soldering. Designers must ensure that conductor ribbons are positioned to minimize shading of the cells and maximize absorption of sunlight.
- Thermal management: Removing solder joints can reduce heat dissipation between cells. Designers need to consider ventilation, material selection and cell layout to ensure effective thermal management and prevent premature material degradation.
- Manufacturing and cost-effectiveness : Tiling Ribbon Technology can lead to increased complexity in the solar panel manufacturing process. Designers need to strike a balance between production costs and profitability, taking into account the advantages in terms of energy efficiency and sustainability offered by this technology.
Compatibility with other innovations
Tiling Ribbon Technology can be integrated with various innovations to further enhance the efficiency and performance of solar panels. Here’s an overview of Tiling Ribbon Technology’s compatibility with bifacial panels, half-cells and PERC cells:
- Bifacial panels: It can be used in the manufacture of bifacial solar panels to optimize their efficiency. By combining the ability of bifacial panels to capture sunlight on both sides and the elimination of traditional soldering thanks to Tiling Ribbon Technology, it is possible to improve the conversion of solar energy into electricity and increase energy production.
- Half-cells: also compatible with solar panels using half-cells. Splitting the cells in two reduces internal resistance and shading losses, while the use of flat, solderless conductor tapes minimizes efficiency losses due to soldering. As a result, solar panels equipped with half-cells and incorporating Tiling Ribbon Technology can offer higher efficiency and better tolerance to shading.
- PERC (Passivated Emitter Rear Contact)cells: Tiling Ribbon Technology can be integrated with PERC solar cells to further optimize solar panel efficiency. PERC cells offer improved efficiency thanks to a passivating layer on the back of the cell that reflects unabsorbed photons back into the cell for another chance at absorption. By combining the advantages of PERC cells with the increased active cell surface area and reduced electrical losses offered by Tiling Ribbon Technology, it is possible to improve the overall efficiency and energy production of solar panels.
Compatibility with different types of photovoltaic cells
Tiling Ribbon Technology is compatible with a variety of photovoltaic cells, with varying advantages. It adapts well to crystalline silicon cells, heterojunction cells and PERC cells, thanks to better defect management and increased energy efficiency. However, it is less advantageous for thin-film and multi-junction cells due to structural and manufacturing differences.
For thin-film cells, Tiling Ribbon Technology is less advantageous due to the very structure of these cells. Thin-film cells are composed of semiconductor materials deposited in thin layers on a substrate, resulting in more uniform light absorption across their entire surface. Tiling Ribbon Technology, designed to reduce efficiency losses due to soldering and increase the cells’ active surface area, has little impact on these cells, which already have uniform light absorption.
As far as multi-junction cells are concerned, the complexity of their structure makes Tiling Ribbon Technology less advantageous. Multi-junction cells are composed of several layers of semiconductor material, each capturing a specific part of the light spectrum to optimize energy efficiency. The electrical connections between the different layers are intrinsically more complex than those of crystalline silicon cells. As a result, the application of Tiling Ribbon Technology is more difficult and less beneficial in terms of improving efficiency. What’s more, this type of cell is often used in specialized, high-efficiency applications, such as aerospace, where the benefits of Tiling Ribbon Technology are not decisive.