New Method to Improve Efficiency of Organic Solar Cells

New Method to Improve Efficiency of Organic Solar Cells

Researchers have developed a new method to improve the efficiency of organic solar cells, according to a study conducted on March 5, 2018.

A team of researchers have developed an innovative method to improve efficiency of solar cells so that they can be used in many applications. Fullerenes are used in almost all organic solar cells. They are expensive and light absorbance is less. Studies are being conducted for the last 10 years to improve the efficiency of solar cells and it is now that they have used non-fullerenes.
Researchers considered the solar cell as a sandwich. The active layer, referred to as “meat” at the middle absorbs sunlight and transforms it into electricity and the outside layer, referred to as bread has electrodes which transport electricity. Their objective was to make the cells absorb light across a large spectrum using different materials. According to the researchers, few work on the outside layers and few work on the interlayer materials. To make them work together, squaraine molecule was used as a crystallizing agent.
They made use of another design mechanism known as FRET-based solar cell, which is a mechanism for energy transfer. Over 10 percent of solar energy was converted into power using a new polymer blend with squaraine. They have developed organic solar cells, which are flexible and in future, could be used in wearable sensors and electric vehicles.
Yifan Zheng, lead author of the article said, “We expect that this crystallizing-agent method will attract attention from chemists and materials scientists affiliated with organic electronics.” This new development, which can be used in wearable sensors is expected to increase the wearable sensor market, as elaborated in the wearable sensor market report published by Coherent Market Insights.

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