The Design of High Performance Integrated Perovskite-based Devices for Solar Fuels

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dc.contributor.advisorMohite, Aditya Den_US
dc.contributor.advisorWong, Michael Sen_US
dc.creatorFehr, Austinen_US
dc.date.accessioned2024-05-20T20:52:06Zen_US
dc.date.created2024-05en_US
dc.date.issued2023-12-12en_US
dc.date.submittedMay 2024en_US
dc.date.updated2024-05-20T20:52:06Zen_US
dc.descriptionEMBARGO NOTE: This item is embargoed until 2026-05-01en_US
dc.description.abstractThe critical limitations of solar energy, which are temporal and geographic mismatches with consumption as well as utilization for material manufacturing, can be addressed with solar fuels. However, no direct solar-to-chemical conversion processes have reached commercial scale. Direct, efficient, integrated solar-to-chemical energy conversion via photoelectrochemical cells (PECs) is a promising route to low-cost, scaled solar fuel manufacture. Historical limitations in conversion efficiency and material cost have hindered the deployment of PECs. The recent and rapid advances in halide perovskite solar cells, achieving >26% power conversion efficiency with low material costs and facile processing, have opened new avenues for PECs. In the first chapter, we overcome the key hurdle to perovskite-based PECs through the design of a conductive adhesive-barrier which can simultaneously protect the sensitive optoelectronic components without adding series resistance, achieving 13.4% solar to hydrogen (STH) efficiency with single-junction perovskite solar cells and 20.8% STH with silicon-perovskite tandems. In the second thrust, we conduct a robust technoeconomic analysis to identify further hurdles to commercialization and suggest target metrics and figures of merit for future research to achieve commercially competitive green hydrogen at <$2/kg. In the third and final thrust, we demonstrate a design protocol that reduces the key contributor to panel cost, catalyst material price, by an order of magnitude while preserving or increasing STH and lifetime. This constellation of work will be the bedrock for the commercial proofing of PEC water-splitting, and a platform for other reactions.en_US
dc.embargo.lift2026-05-01en_US
dc.embargo.terms2026-05-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationFehr, Austin. The Design of High Performance Integrated Perovskite-based Devices for Solar Fuels. (2024). PhD diss., Rice University. https://hdl.handle.net/1911/115924en_US
dc.identifier.urihttps://hdl.handle.net/1911/115924en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSolar fuelsen_US
dc.subjectperovskitesen_US
dc.subjectgreen hydrogenen_US
dc.subjectefficiencyen_US
dc.subjecttechnoeconomic analysisen_US
dc.subjectsystem engineeringen_US
dc.titleThe Design of High Performance Integrated Perovskite-based Devices for Solar Fuelsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical and Biomolecular Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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