Schematic illustration and chemical structure of semi-printed plastic solar cells in air, using food additive o-MA as solvent. Credit: Long Ye, NC State
Researchers have created an efficient, semi-printed plastic solar cell without environmentally hazardous halogen solvents. These solar cells can be manufactured at room temperature, which has implications for large-scale commercial production. Plastic solar cells, or organic photovoltaics, are popular because they are lightweight, flexible, transparent and inexpensive to manufacture, making them useful in multiple applications. Unfortunately, the halogen-containing solvents used in their manufacture are an obstacle to large-scale commercialization...
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