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Laser-driven growth of structurally defined transition metal oxide nanocrystals on carbon nitride photoelectrodes in milliseconds

Zhang, J.; Zou, Y.; Eickelmann, S.; Njel, C. 1; Heil, T.; Ronneberger, S.; Strauss, V.; Seeberger, P. H.; Savateev, A.; Loeffler, F. F.
1 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)


Fabrication of hybrid photoelectrodes on a subsecond timescale with low energy consumption and possessing high photocurrent densities remains a centerpiece for successful implementation of photoelectrocatalytic synthesis of fuels and value-added chemicals. Here, we introduce a laser-driven technology to print sensitizers with desired morphologies and layer thickness onto different substrates, such as glass, carbon, or carbon nitride (CN). The specially designed process uses a thin polymer reactor impregnated with transition metal salts, confining the growth of transition metal oxide (TMO) nanostructures on the interface in milliseconds, while their morphology can be tuned by the laser. Multiple nano-p-n junctions at the interface increase the electron/hole lifetime by efficient charge trapping. A hybrid copper oxide/CN photoanode with optimal architecture reaches 10 times higher photocurrents than the pristine CN photoanode. This technology provides a modular approach to build a library of TMO-based composite films, enabling the creation of materials for diverse applications.

Verlagsausgabe §
DOI: 10.5445/IR/1000133821
Veröffentlicht am 14.06.2021
DOI: 10.1038/s41467-021-23367-7
Zitationen: 18
Web of Science
Zitationen: 15
Zitationen: 17
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien (IAM)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000133821
Erschienen in Nature Communications
Verlag Nature Research
Band 12
Heft 1
Seiten 3224
Schlagwörter 2020-023-028549
Nachgewiesen in Dimensions
Web of Science
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