Non-fullerene Electron Acceptors for Lowing the Production Cost of Organic Solar Cells

Purpose and goal

The project is a real synergies collaboration with complementary expertizes. Swedish partners focus on device engineering and physics, our group at Soochow University has expertize on material synthesize. In the short and longer term, the collaboration will promote the research in both Universities and accelerate the pace to industrializing OPVs.

Results and expected effects

Supported by this grant, I visited and stayed in LiU for a month. During that period, we achieved high efficient OPVs with Power Conversion Efficiency up to 8% by using non-fullerene acceptor materials. Especially, we found very small energy loss (0.59 eV) in these devices. In this project, we will further study whether we could reduce the energy loss of low band gap based solar cells by using our non-fullerene acceptor materials. In addition, the full proposal application is almost finished now and will be submitted in September 2016.

Approach and implementation

Dr Yongxi Li visited LiU, discussed and established collaborations with the leading scientists and group members working on organic solar cells. During this stage, a high efficient OPV with PCE up to 8% by using non-fullerene acceptor material have been obtained. To the best of our knowledge, this PCE is among the highest value reported in the literature to date for the PSCs based on non-fullerene acceptors. Several works are still going on, using the materials synthesized by Dr. Li. Moreover, a draft proposal for VINNMER Marie Curie Incoming is under prepared.