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Title: Ultrathin planar hematite film for solar photoelectrochemical water splitting

Abstract

Hematite holds promise for photoelectrochemical (PEC) water splitting due to its stability, low-cost, abundance and appropriate bandgap. However, it suffers from a mismatch between the hole diffusion length and light penetration length. We have theoretically designed and characterized an ultrathin planar hematite/silver nanohole array/silver substrate photoanode. Due to the supported destructive interference and surface plasmon resonance, photons are efficiently absorbed in an ultrathin hematite film. In conclusion, compared with ultrathin hematite photoanodes with nanophotonic structures, this photoanode has comparable photon absorption but with intrinsically lower recombination losses due to its planar structure and promises to exceed the state-of-the-art photocurrent of hematite photoanodes.

Authors:
 [1];  [2];  [3];  [4];  [4];  [2];  [4]
  1. Tsinghua Univ., Beijing (China); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Nanjing Univ. of Science and Technology, Nanjing (China)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
  4. Tsinghua Univ., Beijing (China)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1240846
Grant/Contract Number:  
SC0001299
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 23; Journal Issue: 24; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; solar energy; thin films

Citation Formats

Liu, Dong, Bierman, David M., Lenert, Andrej, Yu, Hai-Tong, Yang, Zhen, Wang, Evelyn N., and Duan, Yuan-Yuan. Ultrathin planar hematite film for solar photoelectrochemical water splitting. United States: N. p., 2015. Web. doi:10.1364/OE.23.0A1491.
Liu, Dong, Bierman, David M., Lenert, Andrej, Yu, Hai-Tong, Yang, Zhen, Wang, Evelyn N., & Duan, Yuan-Yuan. Ultrathin planar hematite film for solar photoelectrochemical water splitting. United States. https://doi.org/10.1364/OE.23.0A1491
Liu, Dong, Bierman, David M., Lenert, Andrej, Yu, Hai-Tong, Yang, Zhen, Wang, Evelyn N., and Duan, Yuan-Yuan. Thu . "Ultrathin planar hematite film for solar photoelectrochemical water splitting". United States. https://doi.org/10.1364/OE.23.0A1491. https://www.osti.gov/servlets/purl/1240846.
@article{osti_1240846,
title = {Ultrathin planar hematite film for solar photoelectrochemical water splitting},
author = {Liu, Dong and Bierman, David M. and Lenert, Andrej and Yu, Hai-Tong and Yang, Zhen and Wang, Evelyn N. and Duan, Yuan-Yuan},
abstractNote = {Hematite holds promise for photoelectrochemical (PEC) water splitting due to its stability, low-cost, abundance and appropriate bandgap. However, it suffers from a mismatch between the hole diffusion length and light penetration length. We have theoretically designed and characterized an ultrathin planar hematite/silver nanohole array/silver substrate photoanode. Due to the supported destructive interference and surface plasmon resonance, photons are efficiently absorbed in an ultrathin hematite film. In conclusion, compared with ultrathin hematite photoanodes with nanophotonic structures, this photoanode has comparable photon absorption but with intrinsically lower recombination losses due to its planar structure and promises to exceed the state-of-the-art photocurrent of hematite photoanodes.},
doi = {10.1364/OE.23.0A1491},
url = {https://www.osti.gov/biblio/1240846}, journal = {Optics Express},
issn = {1094-4087},
number = 24,
volume = 23,
place = {United States},
year = {2015},
month = {10}
}

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Cited by: 3 works
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Works referenced in this record:

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journal, October 2012


Light-Induced Water Splitting with Hematite: Improved Nanostructure and Iridium Oxide Catalysis
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    Engineering Light at the Nanoscale: Structural Color Filters and Broadband Perfect Absorbers
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    Semiconductor Thin Film Based Metasurfaces and Metamaterials for Photovoltaic and Photoelectrochemical Water Splitting Applications
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