Semiconductor electrodes. 48. Photooxidation of halides and water on n-silicon protected with silicide layers

Fan, Fu Ren F.; Keil, R. G.; Bard, Allen J.

doi:10.1021/ja00340a013

Cited by 90 publications

(60 citation statements)

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“…In the early 1980s, Bard and co-workers used noble metals to stabilize Si photoanodes for halide oxidation. 128 A Pt- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 …”

Section: Nitride Phosphide and Boride Protective Layersmentioning

confidence: 99%

Thin-Film Materials for the Protection of Semiconducting Photoelectrodes in Solar-Fuel Generators

Hu¹,

Lewis²,

Ager³

et al. 2015

J. Phys. Chem. C

262

259

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The electrochemical instability of semiconductors in aqueous electrolytes has impeded the development of robust sunlight-driven water-splitting systems. We review the use of protective thin films to improve the electrochemical stability of otherwise unstable semiconductor photoelectrodes (e.g., Si and GaAs). We first discuss the origins of instability and various strategies for achieving stable and functional photoelectrosynthetic interfaces. We then focus specifically on the use of thin protective films on photoanodes and photocathodes for photosynthetic reactions that include oxygen evolution, halide oxidation, and hydrogen evolution. Finally, we provide an outlook for the future development of thinlayer protection strategies to enable semiconductor-based solar-driven fuel production.

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Section: Nitride Phosphide and Boride Protective Layersmentioning

confidence: 99%

Thin-Film Materials for the Protection of Semiconducting Photoelectrodes in Solar-Fuel Generators

Hu¹,

Lewis²,

Ager³

et al. 2015

J. Phys. Chem. C

262

259

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“…39,40 It was suggested that the modification with discontinuous metallic islands (i.e., nanoparticles) has an advantage for photoelectrochemical hydrogen evolution reaction (HER) because the barrier height of a semiconductor/metal junction can be controlled by the size and density of the metal nanoparticles. 37,[41][42][43][44][45][46][47] Unfortunately, however, this approach has several problems.…”

Section: Introductionmentioning

confidence: 99%

Construction of Mono- and Multimolecular Layers with Electron Transfer Mediation Function and Catalytic Activity for Hydrogen Evolution on a Hydrogen-Terminated Si(111) Surface via Si−C Bond

2008

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Organic molecular layers with viologen moiety (i.e., electron acceptor) were constructed on a hydrogenterminated Si(111) surface via a Si-C bond. Electrochemical characteristics after each synthetic process were measured, and electron mediation capability of the viologen moiety was demonstrated. Incorporation of platinum particles on the viologen-modified Si(111) surface was proved to enhance the hydrogen evolution reaction (HER) rate. Further improvement of the HER rate was achieved by the modification with viologen/ Pt multilayers. Photoelectrochemical HER at the p-Si(111) electrode was also significantly accelerated by the modification with mono-and multiviologen/Pt layers.

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“…Apart from metals or metal oxides, other materials also can be used to protect the n-Si photoelectrodes, such as metal silicides [46,47], Co-Pi [48,49] and conductive polymer [50,51].…”

Section: Other Layersmentioning

confidence: 99%

“…Metal silicides are metallic and conductive [46,47]. However, the high PEC stability was not realized due to the difficulty in the preparation of pinhole-and crack-free metal silicides.…”

Section: Other Layersmentioning

confidence: 99%

Protection strategy for improved catalytic stability of silicon photoanodes for water oxidation

Xia

Zhou

et al. 2015

Science Bulletin

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Semiconductor electrodes. 48. Photooxidation of halides and water on n-silicon protected with silicide layers

Cited by 90 publications

References 0 publications

Thin-Film Materials for the Protection of Semiconducting Photoelectrodes in Solar-Fuel Generators

Thin-Film Materials for the Protection of Semiconducting Photoelectrodes in Solar-Fuel Generators

Construction of Mono- and Multimolecular Layers with Electron Transfer Mediation Function and Catalytic Activity for Hydrogen Evolution on a Hydrogen-Terminated Si(111) Surface via Si−C Bond

Protection strategy for improved catalytic stability of silicon photoanodes for water oxidation

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