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Abstract
The successful realization of carrier-selective contacts for crystalline silicon (c-Si) based device for pho-tocatalytic hydrogen production has been demonstrated. The proposed TiO2protected carrier-selectivecontacts resemble a metal-oxide-semiconductor configuration, including a highly-doped nanocrystallinesilicon (nc-Si) and a tunnel oxide, thereby form a heterostructure with the c-Si substrate. By substitutingconventional pn+-junction Si by c-Si/SiOX/nc-Si structure for both front and back contacts we demon-strate a 16% increase in photovoltage (an open circuit voltage of 584 mV under AM 1.5G conditions).TiO2 protected carrier-selective photoelectrodes showed excellent long-term durability in acidic aqueoussolution having stable photocurrent output for more than 40 days, implying that the proposed carrier-selective contact is a promising configuration to substitute for the conventional pn-junction based c-Siphotocathodes.
Original language | English |
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Journal | Catalysis Today |
Volume | 290 |
Pages (from-to) | 59-64 |
ISSN | 0920-5861 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- Photocatalysis
- Carrier-selective contact
- hydrogen evolution
- metal-oxide-semiconductor
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Dive into the research topics of 'Carrier-selective p- and n-contacts for efficient and stable photocatalytic water reduction'. Together they form a unique fingerprint.Projects
- 1 Finished
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COFUNDPostdocDTU: COFUNDPostdocDTU
Præstrud, M. R. (Project Participant) & Brodersen, S. W. (Project Participant)
01/01/2014 → 31/12/2019
Project: Research