Double Cathode Modification Improves Charge Transport and Stability of Organic Solar Cells

• DOI: 10.3390/en15207643
• Publication Date: 2022-10-17T04:04:55Z
• Authors: Tao Lin; Tingting Dai
• Keywords: Active layer

Introducing a cathode modification layer is an effective method to obtaining highly efficient organic solar cells (OSCs) and improving their stability. Herein, we innovatively introduced double (SnO2/ZnO) into non-fullerene OSCs based on PM7:IT-4F explored the mechanisms. The effects of SnO2/ZnO film charge carriers transfer in are studied via variety electrical testing methods including Photo-CELIV measurements. As result, buffer with low recombination rate high carrier mobility could be introduced, which beneficial electron transport collection. champion device acquires efficiency 12.91%, obviously higher than that single (SnO2 or ZnO) device. Moreover, demonstrated great help improvement stability, our work provide new inspiration for preparation layer.