Zinc Oxide-Perylene Diimide Hybrid Electron Transport Layers for Air-Processed Inverted Organic Photovoltaic Devices.
Edward CieplechowiczRahim MunirMichael A AndersonErin L RatcliffGregory C WelchPublished in: ACS applied materials & interfaces (2021)
In this work, we report the formation of perylene diimide films, from green solvents, for use as electron transporting layers, when combined with ZnO, in inverted-type organic photovoltaics. A modified N-annulated PDI was functionalized with a tert-butyloxycarbonyl protecting group to solubilize the material, enabling solution processing from green solvents. Post-deposition treatment of films via thermal annealing cleaves the protecting group yielding the known PDIN-H material, rendering films solvent-resistant. The PDIN-H films were characterized by optical absorption spectroscopy, contact angle measurements, and atomic force microscopy. When used to modify the surface of ZnO in inverted-type organic photovoltaics (air-processed and tested) based on the PM6:Y6 and PTQ10:Y6 bulk-heterojunctions, the device power conversion efficiency increases from 9.8 to 11.0% and 7.2 to 9.8%, respectively.
Keyphrases
- room temperature
- ionic liquid
- solar cells
- atomic force microscopy
- high resolution
- high speed
- perovskite solar cells
- water soluble
- quantum dots
- single molecule
- carbon nanotubes
- air pollution
- particulate matter
- risk assessment
- heavy metals
- gold nanoparticles
- reduced graphene oxide
- electron microscopy
- molecularly imprinted