The world is continuously making efforts to transition to a cleaner source of energy like solar power. To accomplish this, scientists have invested considerable resources in creating solar cells that are more efficient at manufacturing electricity. Organic solar cells and lead-halide perovskite solar cells are two promising techniques that are quickly emerging photovoltaic technologies with the potential for low-cost, long-term solar energy generation. The most significant advantage the approaches hold over the commercial solar cells based on crystalline silicon is that they entail a minimal cost in depositing photoactive layer from solution. Thus, making energy production cheaper. Further, it facilitates simplified scaling up through printing techniques and roll-to-roll manufacture while also helping device fabrication on stretchable and flexible surfaces. However, there remain numerous hurdles before these approaches can be adopted universally.
Recent developments might make this feat successful as researchers have discovered a new conjugated polymer for organic electronics. The technique involved the use of two distinct chemical reactions and could advance the Perovskite Solar Cells Module Market as it highly enhances the performance in organic and perovskite solar cells. The promising study might facilitate the production of inexpensive, clean, renewable energy in the coming years.
Hitherto, organic cells were not considered to be very efficient. This is because they needed alterations in the photoactive layer composition. In these cells, light-to-energy conversion happens within the photoactive layer that comprises a combination of donor and acceptor materials (the door is typically a conjugated polymer). In parallel, perovskite solar cells have managed to reach an impressive 25.5% certified record efficiency. However, they still lack significantly in providing long-term stability.
Prior work reveals that the photoactive perovskite material needs to be wrapped with a charge-extraction layer that enables efficient encapsulation to enhance device stability. In between other materials, this protective function can be fulfilled successfully by conjugated polymers. Thus, improving their synthesis results in maximizing the device’s quality.
The present study concentrated on a specific type of conjugated polymers that includes the isoindigo unit in the polymer chain. Through experiments, the researchers found that among the two synthetic pathways used to synthesize isoindigo-based materials, the Stille reaction needs to be put at higher preference than the Suzuki reaction, where the final step in the synthesis is concerned.
The team adjusted the approach according to the isoindigo-based monomer synthesis. The team realized that the method could produce high-quality material that can perform relatively well within photovoltaic cells. Researchers are now set to undertake follow-up experiments to synthesize numerous materials and test them in perovskite solar cells. The study will further clarify the inter-relationship between material structure and device performance.
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