Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 37, Pages 13051-13055Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907467
Keywords
hydroxylation; metal complexes; perylene bisimide; photoconductive interlayer; solar cells
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Funding
- Chinese National Science Foundation (NSFC)
- German Research Foundation (DFG) [51761135101, Wu317/21-1]
- Bavarian State Ministry of Science, Research, and the Arts for the Collaborative Research Network Solar Technologies go Hybrid
- NSFC [21733005, 51573055]
- Key Program of Guangzhou Scientific Research Special Project [201707020024]
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By introduction of four hydroxy (HO) groups into the two perylene bisimide (PBI) bay areas, new HO-PBI ligands were obtained which upon deprotonation can complex Zn-II ions and photosensitize semiconductive zinc oxide thin films. Such coordination is beneficial for dispersing PBI photosensitizer molecules evenly into metal oxide films to fabricate organic-inorganic hybrid interlayers for organic solar cells. Supported by the photoconductive effect of the ZnO:HO-PBI hybrid interlayers, improved electron collection and transportation is achieved in fullerene and non-fullerene polymer solar cell devices, leading to remarkable power conversion efficiencies of up to 15.95 % for a non-fullerene based organic solar cell.
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