Conducting polymer photoelectrodes: Design criteria, interface-to-interphase considerations and durability
Erin Ratcliff a
a School of Materials Science and Engineering Georgia Institute of Technology
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Fall 2024 Conference (MATSUSFall24)
#OMIEC - Understanding Mixed Ionic-Electronic Conductors
Lausanne, Switzerland, 2024 November 12th - 15th
Organizers: Natalie Banerji and Olivier Bardagot
Invited Speaker, Erin Ratcliff, presentation 207
DOI: https://doi.org/10.29363/nanoge.matsusfall.2024.207
Publication date: 28th August 2024

Conducting polymers have a number of unique properties relative to conventional photoelectrode materials.  The mixed electrical-ionic transport properties present a complex polymer/electrolyte interphase that if understood, could provide control over local environments afforded through synthesis, long-lived charge carrier lifetimes, and flexible, low-cost, and scalable thin film formats which circumvent the shortcomings of inorganic materials (surface states, grain boundaries, challenges in processing, and mechanically unstable platforms).

 

Creating organic semiconductor-based photoelectrodes is not as simple as interfacing optimized organic photovoltaic materials with an electrolyte. Durable and high performing organic photoelectrodes require balancing the photojunction properties with charge transport, attention to catalytic attachment, and a strong emphasis on mitigating parasitic chemical reactions and resistances.

 

The Center for Soft PhotoElectroChemical Systems (SPECS) is an Energy Frontier Research Center focused on the basic science questions that underpin the development of low-cost, robust energy conversion and energy storage technologies based on new organic polymer (plastic) electronic materials. These materials are predicted to fill a critical position in the U.S. energy portfolio, providing for next-generation fuel-forming platforms (energy conversion) and batteries (energy storage) that cannot currently be achieved with conventional (hard) inorganic materials. A number of emerging in situ/operando spectroelectrochemical and scanning electrochemical cell microscopy approaches will be discussed for this exciting new area of energy conversion.

 

 

This work was supported as part of the Center for Soft PhotoElectroChemical Systems (SPECS), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences at Georgia Institute of Technology, under award # DE-SC0023411.

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