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Title:Interface engineering of Ta[sub]3N[sub]5 thin film photoanode for highly efficient photoelectrochemical water splitting
Authors:ID Fu, Jie (Author)
ID Fan, Zeyu (Author)
ID Nakabayashi, Mamiko (Author)
ID Ju, Huanxin (Author)
ID Pastukhova, Nadiia (Author)
ID Xiao, Yequan (Author)
ID Feng, Chao (Author)
ID Shibata, Naoya (Author)
ID Domen, Kazunari (Author)
ID Li, Yanbo (Author)
Files:.pdf s41467-022-28415-4.pdf (2,42 MB)
MD5: 7670127E00C1F7DC756A070A2706C6B2
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Interface engineering is a proven strategy to improve the efficiency of thin film semiconductor based solar energy conversion devices. Ta3N5 thin film photoanode is a promising candidate for photoelectrochemical (PEC) water splitting. Yet, a concerted effort to engineer both the bottom and top interfaces of Ta3N5 thin film photoanode is still lacking. Here, we employ n-type In:GaN and p-type Mg:GaN to modify the bottom and top interfaces of Ta3N5 thin film photoanode, respectively. The obtained In:GaN/Ta3N5/Mg:GaN heterojunction photoanode shows enhanced bulk carrier separation capability and better injection efficiency at photo- anode/electrolyte interface, which lead to a record-high applied bias photon-to-current efficiency of 3.46% for Ta3N5-based photoanode. Furthermore, the roles of the In:GaN and Mg:GaN layers are distinguished through mechanistic studies. While the In:GaN layer con- tributes mainly to the enhanced bulk charge separation efficiency, the Mg:GaN layer improves the surface charge inject efficiency. This work demonstrates the crucial role of proper interface engineering for thin film-based photoanode in achieving efficient PEC water splitting.
Keywords:photocatalysis, renewable energy
Year of publishing:2022
Number of pages:str. 1-9
Numbering:Vol. 13, 13
PID:20.500.12556/RUNG-7177 New window
COBISS.SI-ID:96773379 New window
ISSN on article:2041-1723
DOI:10.1038/s41467-022-28415-4 New window
Publication date in RUNG:09.02.2022
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Record is a part of a journal

Title:Nature communications
Shortened title:Nat. Commun.
Publisher:Nature Publishing Group
COBISS.SI-ID:2315876 New window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:09.02.2022