title: Strongly Enhanced Water Splitting Performance of Ta3 N5 Nanotube Photoanodes with Subnitrides.
abstract: Subnitrides strongly enhance the efficiency of Ta3 N5 -nanotube photoanodes in photochemical water splitting. The fabrication of Ta3 N5 nanotube layers with a controlled subnitride layer at the interface to the back contact is demonstrated. The insertion of this subnitride layer has a strong influence on the electron transfer to the back contact, and as a result leads to a drastic shift in photocurrent onset potential and a considerable enhancement of photocurrent conversion efficiency.
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstrasse 7, D-91058, Erlangen, Germany.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstrasse 7, D-91058, Erlangen, Germany.
authors.forename: Xuemei
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstrasse 7, D-91058, Erlangen, Germany.
authors.forename: Nhat Truong
authors.initials: NT
authors.lastname: Nguyen
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstrasse 7, D-91058, Erlangen, Germany.
authors.forename: Imgon
authors.initials: I
authors.lastname: Hwang
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstrasse 7, D-91058, Erlangen, Germany.|Department of Chemistry, King Abdulaziz University, Jeddah, Saudi Arabia.
authors.forename: Patrik
authors.initials: P
authors.lastname: Schmuki
keywords: charge transfer; nanotubes; photoelectrochemical water splitting; subnitride layers