Aggregation and morphology control enables multiple cases of high-efficiency polymer solar cells

Although the field of polymer solar cell has seen much progress in device performance in the past few years, several limitations are holding back its further development. For instance, current high-efficiency (>9.0%) cells are restricted to material combinations that are based on limited donor polymers and only one specific fullerene acceptor. Here we report the achievement of high-performance (efficiencies up to 10.8%, fill factors up to 77%) thick-film polymer solar cells for multiple polymer:fullerene combinations via the formation of a near-ideal polymer:fullerene morphology that contains highly crystalline yet reasonably small polymer domains. This morphology is controlled by the temperature-dependent…

• UD
  U.S. Department of Energy

  Awards: -AC02-05CH11231, 05CH11231, AC02-05CH11231, DE-AC02, FG02-98ER45737, DE-FG02-, DE-AC02-05CH11231, DE-FG02-98ER45737, DE-FG02, DE-AC02-
• NC
  North Carolina State University
• OO
  Office of Science

  Awards: AC02-05CH11231, -AC02-05CH11231, DE-AC02
• BE
  Basic Energy Sciences

  Awards: DE-AC02, AC02-05CH11231, DE-FG02-98ER45737, DE-AC02-05CH11231, DE-FG02, -AC02-05CH11231