U.S. Develops New Bulk Copolymer Solar Cells

According to a report released by the Physicist Organization Network on May 29th, a research team led by Rafael Verduzzi from Rice University and Angliqui Gomes from Penn State University has developed a new type of solar cell based on bulk copolymers. These materials are self-assembling organic compounds that can form distinct layers on their own. Although the current photoelectric conversion efficiency of this new cell is only 3%, it still outperforms other polymer-based solar cells. The researchers believe this innovative approach could open up a new direction in solar energy technology. Their findings were recently published in *Nano Express*. Verduz pointed out that while commercial silicon-based solar cells currently achieve around 20% efficiency, with lab models reaching up to 25%, scientists have been working on polymer-based alternatives since the mid-1980s. The goal has always been to significantly lower the cost of solar energy. However, progress has been slow. A breakthrough came when a polymer-polyfullerene blend achieved 10% efficiency, but polyfullerene itself proved difficult to handle and process. Verduz explained, “Bulk copolymers show great potential for use in organic solar cells, yet very few researchers have explored high-mass copolymers for creating efficient photovoltaic devices. We believe that with the right materials and proper assembly conditions, we can achieve high-performance solar cells.” The team at Rice University discovered that a specific bulk copolymer, P3HT-b-PFTBT, can form nanoscale bands approximately 16 nm wide. What intrigued the researchers even more was the polymer’s natural tendency to align perpendicularly on glass surfaces. They fabricated the copolymer on an ITO-coated glass substrate at 165°C. Then, they placed the copolymer on one end of a device created by Penn State researchers and added an aluminum layer on the opposite side. This setup allowed the copolymer bands to stretch between the top and bottom electrodes, providing a clear pathway for electron flow. Looking ahead, the researchers plan to test other bulk copolymers and explore ways to control their structure to enhance light absorption and improve the conversion of photons into electricity. For now, their main focus is on boosting the performance of these new solar cells, as this will help address other challenges, such as long-term stability. Verduz noted, “Encapsulating a solar cell to protect it from air and moisture is relatively straightforward, but protecting it from UV radiation is much more challenging. After all, the cell needs to be exposed to sunlight to function.” The team hopes that once they optimize the performance of these copolymer-based solar cells, they will be able to find practical, long-term applications for them. (Liu Xia)

Lens Ring

Lens Ring,Lens Ring Joint Gasket ,Lens Gasket,Lens Ring Gasket

WENZHOU JINGWEI SEAL TECHNOLOGY CO., LTD , https://www.ringjoint-gasket.com