Phenol-Functionalized Perylene Bisimides as Amine-Free Electron Transporting Interlayers for Stable Nonfullerene Organic Solar Cells. Wen, X., Zhang, Y., Xie, G., Rausch, R., Tang, N., Zheng, N., Liu, L., Würthner, F., & Xie, Z. Adv. Funct. Mater., 32(17):2111706, Wiley, 01, 2022.
Phenol-Functionalized Perylene Bisimides as Amine-Free Electron Transporting Interlayers for Stable Nonfullerene Organic Solar Cells [link]Paper  doi  abstract   bibtex   
A new type of cathode interlayer composed of 2,6-di-tert-butyl-phenol-functionalized perylene bisimide (PBI-2P) is successfully applied as an electron transporting layer for fused-ring nonfullerene organic solar cells (OSCs). The stable contact between these novel electron transporting layers and the representative nonfullerene acceptor Y6 greatly enhances the device stability compared to conventional amine-group containing cathode interlayers. Moreover, the easily formed biradical species in the interlayers yields rather good thickness tolerance of the PBI-2P layer in photovoltaic devices. The OSCs based on the PBI-2P interlayer show a power conversion efficiency up to 17.20% and good stability compared to amino-group functionalized interlayers. The findings demonstrate a promising design principle for cathode interlayer engineering based on pigment chromophores equipped with the 2,6-di-tert-butylphenoxy groups that are prone to form the respective ultrastable butylphenoxy radicals for stable nonfullerene OSCs.
@article{Wen_2022,
  abstract = {A new type of cathode interlayer composed of 2,6-di-tert-butyl-phenol-functionalized perylene bisimide (PBI-2P) is successfully applied as an electron transporting layer for fused-ring nonfullerene organic solar cells (OSCs). The stable contact between these novel electron transporting layers and the representative nonfullerene acceptor Y6 greatly enhances the device stability compared to conventional amine-group containing cathode interlayers. Moreover, the easily formed biradical species in the interlayers yields rather good thickness tolerance of the PBI-2P layer in photovoltaic devices. The OSCs based on the PBI-2P interlayer show a power conversion efficiency up to 17.20% and good stability compared to amino-group functionalized interlayers. The findings demonstrate a promising design principle for cathode interlayer engineering based on pigment chromophores equipped with the 2,6-di-tert-butylphenoxy groups that are prone to form the respective ultrastable butylphenoxy radicals for stable nonfullerene OSCs.},
  added-at = {2022-06-14T11:28:33.000+0200},
  author = {Wen, Xinbo and Zhang, Yu and Xie, Guojing and Rausch, Rodger and Tang, Ningning and Zheng, Nan and Liu, Linlin and Würthner, Frank and Xie, Zengqi},
  biburl = {https://www.bibsonomy.org/bibtex/280ba56cf9e992381ba9b8c27f7f7baf1/wuerthner_group},
  doi = {10.1002/adfm.202111706},
  interhash = {a565684dab13ea6ea6db09bef67d482d},
  intrahash = {80ba56cf9e992381ba9b8c27f7f7baf1},
  journal = {Adv. Funct. Mater.},
  keywords = {myown},
  month = {01},
  number = 17,
  pages = 2111706,
  publisher = {Wiley},
  timestamp = {2022-06-14T11:28:33.000+0200},
  title = {Phenol-Functionalized Perylene Bisimides as Amine-Free Electron Transporting Interlayers for Stable Nonfullerene Organic Solar Cells},
  url = {https://doi.org/10.1002%2Fadfm.202111706},
  volume = 32,
  year = 2022
}

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