Si/TiO2 Tandem-Junction Microwire Arrays for Unassisted Solar-Driven Water Splitting

Shaner, Matthew R.; McDowell, Matthew T.; Pien, Alex; Atwater, Harry A.; Lewis, Nathan S.

doi:10.1149/2.0141605jes

Si/TiO₂ Tandem-Junction Microwire Arrays for Unassisted Solar-Driven Water Splitting

Journal Article · Thu Jan 14 23:00:00 EST 2016 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/2.0141605jes· OSTI ID:1633783

Shaner, Matthew R. ^[1]; McDowell, Matthew T. ^[2]; Pien, Alex ^[2]; Atwater, Harry A. ^[2]; Lewis, Nathan S. ^[2]

California Institute of Technology (CalTech), Pasadena, CA (United States). Joint Center for Artificial Photosynthesis (JCAP); California Institute of Technology, Pasadena, CA
California Institute of Technology (CalTech), Pasadena, CA (United States). Joint Center for Artificial Photosynthesis (JCAP)

In this work, tandem-junction microwire array photoelectrodes have been fabricated by coating np⁺-Si radial homojunction microwire arrays sequentially with fluorine-doped tin oxide (FTO) and titanium dioxide (TiO₂). These photoelectrodes effected unassisted water splitting under simulated 1 Sun conditions with an open-circuit potential ($$E_{\text{oc}}$$) of –1.5 V vs the formal potential for oxygen evolution, $E^0$'(OH^–/O₂), a current density at $E = E^0$'(OH^–/O₂) of 0.78 mA cm^–2, a fill factor ($$\textit{ff}$$) = 0.51, and a photovoltaic-biased photoelectrochemical ideal regenerative cell efficiency of 0.6%.

View Accepted Manuscript (DOE)

Research Organization:: California Institute of Technology (CalTech), Pasadena, CA (United States). Joint Center for Artificial Photosynthesis (JCAP)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0004993

OSTI ID:: 1633783

Journal Information:: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 5 Vol. 163; ISSN 0013-4651

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

References (13)

Photoelectrochemical Behavior of Planar and Microwire-Array Si\|GaP Electrodes Strandwitz, Nicholas C.; Turner-Evans, Daniel B.; Tamboli, Adele C. Advanced Energy Materials, Vol. 2, Issue 9 https://doi.org/10.1002/aenm.201100728	journal	June 2012
Hematite/Si Nanowire Dual-Absorber System for Photoelectrochemical Water Splitting at Low Applied Potentials Mayer, Matthew T.; Du, Chun; Wang, Dunwei Journal of the American Chemical Society, Vol. 134, Issue 30 https://doi.org/10.1021/ja3051734	journal	July 2012
Growth of Oriented Single-Crystalline Rutile TiO ₂ Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells Liu, Bin; Aydil, Eray S. Journal of the American Chemical Society, Vol. 131, Issue 11 https://doi.org/10.1021/ja8078972	journal	March 2009
Efficient Solar Water Splitting, Exemplified by RuO ₂ -Catalyzed AlGaAs/Si Photoelectrolysis Licht, S.; Wang, B.; Mukerji, S. The Journal of Physical Chemistry B, Vol. 104, Issue 38 https://doi.org/10.1021/jp002083b	journal	September 2000
A Fully Integrated Nanosystem of Semiconductor Nanowires for Direct Solar Water Splitting Liu, Chong; Tang, Jinyao; Chen, Hao Ming Nano Letters, Vol. 13, Issue 6 https://doi.org/10.1021/nl401615t	journal	May 2013
Limiting and realizable efficiencies of solar photolysis of water Bolton, James R.; Strickler, Stewart J.; Connolly, John S. Nature, Vol. 316, Issue 6028, p. 495-500 https://doi.org/10.1038/316495a0	journal	August 1985
Photoelectrochemistry of core–shell tandem junction n–p ⁺ -Si/n-WO ₃ microwire array photoelectrodes Shaner, Matthew R.; Fountaine, Katherine T.; Ardo, Shane Energy Environ. Sci., Vol. 7, Issue 2 https://doi.org/10.1039/C3EE43048K	journal	January 2014
Stabilization of Si microwire arrays for solar-driven H ₂ O oxidation to O ₂ (g) in 1.0 M KOH(aq) using conformal coatings of amorphous TiO ₂ Shaner, Matthew R.; Hu, Shu; Sun, Ke Energy & Environmental Science, Vol. 8, Issue 1 https://doi.org/10.1039/C4EE03012E	journal	January 2015
Modeling, simulation, and design criteria for photoelectrochemical water-splitting systems Haussener, Sophia; Xiang, Chengxiang; Spurgeon, Joshua M. Energy & Environmental Science, Vol. 5, Issue 12 https://doi.org/10.1039/c2ee23187e	journal	January 2012
An analysis of the optimal band gaps of light absorbers in integrated tandem photoelectrochemical water-splitting systems Hu, Shu; Xiang, Chengxiang; Haussener, Sophia Energy & Environmental Science, Vol. 6, Issue 10 https://doi.org/10.1039/c3ee40453f	journal	January 2013
Comparison of the device physics principles of planar and radial p-n junction nanorod solar cells Kayes, Brendan M.; Atwater, Harry A.; Lewis, Nathan S. Journal of Applied Physics, Vol. 97, Issue 11, Article No. 114302 https://doi.org/10.1063/1.1901835	journal	June 2005
Merits and limitations of circular TLM structures for contact resistance determination for novel III-V HBTs Klootwijk, J. H.; Timmering, C. E. Proceedings of the 2004 International Conference on Microelectronic Test Structures (IEEE Cat. No.04CH37516) https://doi.org/10.1109/ICMTS.2004.1309489	conference	January 2004
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting Khaselev, O. Science, Vol. 280, Issue 5362 https://doi.org/10.1126/science.280.5362.425	journal	April 1998

Similar Records

Unassisted solar-driven photoelectrosynthetic HI splitting using membrane-embedded Si microwire arrays

Journal Article · Wed Apr 01 00:00:00 EDT 2015 · Energy & Environmental Science · OSTI ID:1457530

Si Microwire-Array Photocathodes Decorated with Cu Allow CO ₂ Reduction with Minimal Parasitic Absorption of Sunlight

Journal Article · Tue Jul 07 00:00:00 EDT 2020 · ACS Energy Letters · OSTI ID:1801632

Photoelectrochemistry of core–shell tandem junction n–p⁺-Si/n-WO₃ microwire array photoelectrodes

Journal Article · Sun Dec 15 23:00:00 EST 2013 · Energy & Environmental Science · OSTI ID:1634223

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Si/TiO2 Tandem-Junction Microwire Arrays for Unassisted Solar-Driven Water Splitting

Citation Formats

References (13)

Similar Records

Related Subjects

Si/TiO₂ Tandem-Junction Microwire Arrays for Unassisted Solar-Driven Water Splitting