Organic Solar Cells Based on Cellulose Nanopaper from Agroforestry Residues with Efficiency over 16% and Effectively Wide Angle Light Capturing

摘要： Cellulose nanopaper (CNP) was successfully demonstrated for the enhanced efficiency and effectively wide-angle light capturing of organic solar cells (OSCs). The highest power-conversion efficiency (PCE) is up to 16.17%, which is among the excellent results natural materials for OSCs. The effectively wide-angle harvesting is demonstrated in the range from -45 to 45 degrees. Importantly, when the incident angle is 45o, the JSC with CNP is 21.18 mA/cm2, while the corresponding JSC without CNP is only 15.11 mA/cm2, an increase of ~40% is observed. The present PCEs of are found to be enhanced from 9.12% to 12.78%.