Next Article in Journal
Fabrication and Characterization of CH3NH3PbI3−xyBrxCly Perovskite Solar Cells
Next Article in Special Issue
Cobalt-Based Electrolytes for Dye-Sensitized Solar Cells: Recent Advances towards Stable Devices
Previous Article in Journal
Chemical Analysis of Different Parts of Date Palm (Phoenix dactylifera L.) Using Ultimate, Proximate and Thermo-Gravimetric Techniques for Energy Production
Previous Article in Special Issue
Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessReview
Energies 2016, 9(5), 373; doi:10.3390/en9050373

Nanostructured p-Type Semiconductor Electrodes and Photoelectrochemistry of Their Reduction Processes

Department of Chemistry, University of Rome “La Sapienza”, 00139 Rome, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Peter J. S. Foot
Received: 1 April 2016 / Revised: 5 May 2016 / Accepted: 6 May 2016 / Published: 16 May 2016
(This article belongs to the Special Issue Dye Sensitized Solar Cells)

Abstract

This review reports the properties of p-type semiconductors with nanostructured features employed as photocathodes in photoelectrochemical cells (PECs). Light absorption is crucial for the activation of the reduction processes occurring at the p-type electrode either in the pristine or in a modified/sensitized state. Beside thermodynamics, the kinetics of the electron transfer (ET) process from photocathode to a redox shuttle in the oxidized form are also crucial since the flow of electrons will take place correctly if the ET rate will overcome that one of recombination and trapping events which impede the charge separation produced by the absorption of light. Depending on the nature of the chromophore, i.e., if the semiconductor itself or the chemisorbed dye-sensitizer, different energy levels will be involved in the cathodic ET process. An analysis of the general properties and requirements of electrodic materials of p-type for being efficient photoelectrocatalysts of reduction processes in dye-sensitized solar cells (DSC) will be given. The working principle of p-type DSCs will be described and extended to other p-type PECs conceived and developed for the conversion of the solar radiation into chemical products of energetic/chemical interest like non fossil fuels or derivatives of carbon dioxide. View Full-Text
Keywords: semiconductor; photoelectrochemistry; p-type; reduction; dye-sensitized solar cell; solar fuels; CO2 reduction; metal oxides; metal chalcogenides semiconductor; photoelectrochemistry; p-type; reduction; dye-sensitized solar cell; solar fuels; CO2 reduction; metal oxides; metal chalcogenides
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Bonomo, M.; Dini, D. Nanostructured p-Type Semiconductor Electrodes and Photoelectrochemistry of Their Reduction Processes. Energies 2016, 9, 373.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top