Journal
ORGANIC ELECTRONICS
Volume 35, Issue -, Pages 193-198Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2016.05.022
Keywords
Inverted organic solar cell; Small molecule; DPP; Thermal annealing; Solvent annealing
Funding
- Japan Student Services Organization
- Japan Society for the Promotion of Science
- [15H05760]
- [16H04187]
- Grants-in-Aid for Scientific Research [16F16069] Funding Source: KAKEN
Ask authors/readers for more resources
Small-molecule DPP(TBFu)(2)-based inverted organic solar cells were fabricated and their stability investigated. The effects of thermal annealing and solvent annealing on device performance and stability were compared. To increase the stability, mix-PCBM (PC61BM and its C-70 analogue), which is reported to give higher device stability, was also included. Solvent-annealed devices showed the highest power conversion efficiency (PCE) of 4.62%, whereas thermally annealed devices showed a PCE of 3.94%. After the aging process, which involved thermal stress and exposure to air, thermally annealed and mix-PCBM devices retained a PCE of 3%, whereas solvent-annealed devices had a much lower PCE of 1.7%. Therefore, our results show that in the long-term stability perspective, thermal annealing is better than solvent annealing, and mix-PCBM is better than PC61BM in the case of DPP(TBFu)(2). We fabricated small-molecule inverted organic solar cells that retain their performance in air for 3 weeks without encapsulation. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available