4.6 Article

Polymer with a 3D conductive network: a thickness-insensitive electron transport layer for inverted polymer solar cells

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 27, Pages 12969-12973

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta01352g

Keywords

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Funding

  1. National Natural Science Foundation of China [51573153, 61564003, 61774050, 21474081]
  2. Scientific Research Fund of Hunan Provincial Education Department [15A180]
  3. Innovation team of the Ministry of Education [IRT-17R90]
  4. Hunan Collaborative Innovation Center of Chemical Engineering & Technology with Environmental Benignity and Effective Resource Utilization
  5. Guangxi Bagui Scholar Program
  6. Guangxi Natural Science Foundation [2015GXNSFGA139002]
  7. Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials

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A low-cost non-conjugated polymer, PEIE-DIO with a 3D conductive network, was developed by a simple quaterisation reaction between polyethyleneimine ethoxylate (PEIE) and 1,8-diiodooctane (DIO). The inverted PTB7-Th:PC71BM PSCs with PEIE-DIO as an ETL achieve a PCE of 10.06%, and can keep a high PCE of 8.88% with 50 nm thick PEIE-DIO films, which are compatible with roll-to-roll techniques, making the fabrication of large-area devices at low cost possible.

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