Over 75% incident-photon-to-current efficiency without solid electrodes

Literature Information

Publication Date 2016-04-15
DOI 10.1039/C6CP02231F
Impact Factor 3.676
Authors

D. Plana, D. Tiwari, D. J. Fermín


View Original

Abstract

The efficiency of photoelectrochemical reactions is conventionally defined in terms of the ratio between the current responses arising from the collection of carriers at electrical contacts and the incident photon flux at a given wavelength, i.e. the incident-photon-to-current-efficiency (IPCE). IPCE values are determined by a variety of factors such as the absorption constant of the active layer, bulk and surface recombination of photogenerated carriers, as well as their characteristic diffusion length. These parameters are particularly crucial in nanostructured photoelectrodes, which commonly display low carrier mobility. In this article, we examine the photoelectrochemical responses of a mesoporous TiO2 film in which the IPCE is enhanced by fast extraction of carriers via chemical reactions. TiO2 films are spontaneously formed by destabilisation of colloidal particles at the polarisable interface between two immiscible electrolyte solutions. The photocurrent arises from hole-transfer to redox species confined to the organic electrolyte, which is coupled to the transfer of electrons to oxygen in the aqueous electrolyte. The dynamic photocurrent responses demonstrate that no coupled ion transfer is involved in the process. The interplay of different interfacial length scales, molecularly sharp liquid/liquid boundary and mesoporous TiO2 film, promotes efficiencies above 75% (without correction for reflection losses). This is a significant step change in values reported for these interfaces (below 1%), which are usually limited to sub-monolayer coverage of photoactive molecular or nanoscopic materials.

Related Literature

Aromatic stabilization of functionalized corannulene cations

Jingbai Li, Andrey Yu. Rogachev

2016-01-07 Paper

DOI: 10.1039/C5CP07002C

Electron delocalization and electron density of small polycyclic aromatic hydrocarbons in singlet excited states

Mar Estévez-Fregoso, Jesús Hernández-Trujillo

2016-01-11 Paper

DOI: 10.1039/C5CP06993A

Contents list

Front/Back Matter

DOI: 10.1039/C5CP90201K

How many bound valence states does the C60− anion have?

Shachar Klaiman, Lorenz S. Cederbaum

2016-03-24 Communication

DOI: 10.1039/C6CP00667A

Improvement of the electron collection efficiency in porous hematite using a thin iron oxide underlayer: towards efficient all-iron based photoelectrodes

Nicola Dalle Carbonare, Stefano Carli, Roberto Argazzi, Michele Orlandi, Nicola Bazzanella, Antonio Miotello, Stefano Caramori, Carlo A. Bignozzi

2015-10-19 Paper

DOI: 10.1039/C5CP04152J

Theoretical prediction of silicene as a new candidate for the anode of lithium-ion batteries

Seyedeh Mozhgan Seyed-Talebi, Iraj Kazeminezhad, Javad Beheshtian

2015-10-07 Paper

DOI: 10.1039/C5CP04666A

Inhibition mechanism of SAHA in HDAC: a revisit

Jingwei Zhou, Ruibo Wu

2015-10-08 Communication

DOI: 10.1039/C5CP05633K

You might also like

Compound Q&A

How should waste containing 4-Bromo-3-methyl-2-thiophenecarboxylic acid (CAS: 265652-39-9) be handled?

Waste containing 4-Bromo-3-methyl-2-thiophenecarboxylic acid (CAS: 265652-39-9) ...

265652-39-94-Bromo-3-methyl-2-t...
Compound Q&A

What industries use (2S,5S,2'S,5'S)-1,1'-(1,2-Ethanediyl)bis(2,5-dimethylphospholane) (CAS: 136779-26-5)?

(2S,5S,2'S,5'S)-1,1'-(1,2-Ethanediyl)bis(2,5-dimethylphospholane) is primarily u...

136779-26-5(2S,5S,2'S,5'S)-1,1'...
Compound Q&A

What industries use Ethyl 2-(2-bromo-5-fluorophenyl)acetate (CAS: 1214910-61-8)?

Ethyl 2-(2-bromo-5-fluorophenyl)acetate (CAS: 1214910-61-8) is used in the pharm...

1214910-61-8Ethyl 2-(2-bromo-5-f...
Compound Q&A

How is 4-Methyl-2-benzofuran-1,3-dione (CAS: 4792-30-7) typically synthesized?

4-Methyl-2-benzofuran-1,3-dione (CAS: 4792-30-7) can be synthesized through seve...

4792-30-74-Methyl-2-benzofura...
Compound Q&A

What industries use 4,6-Dichloroquinoline-3-carbonitrile (CAS: 936498-04-3)?

4,6-Dichloroquinoline-3-carbonitrile (CAS: 936498-04-3) is used in the pharmaceu...

936498-04-34,6-Dichloroquinolin...
Compound Q&A

What are the main uses of Chloro[tris(para-trifluoromethylphenyl)phosphine]gold(I) (CAS: 385815-83-8)?

Chloro[tris(para-trifluoromethylphenyl)phosphine]gold(I) is primarily used in or...

385815-83-8Chloro[tris(para-tri...
Compound Q&A

Is 2-Bromo-5-nitrofuran (CAS: 823-73-4) safe?

2-Bromo-5-nitrofuran (CAS: 823-73-4) is generally considered safe when handled w...

823-73-42-Bromo-5-nitrofuran
Compound Q&A

How should 5-Bromo-2,3,4-trifluorobenzoic acid (CAS: 212631-85-1) be stored?

5-Bromo-2,3,4-trifluorobenzoic acid should be stored in a cool, dry place away f...

212631-85-15-Bromo-2,3,4-triflu...
Compound Q&A

What are the main uses of Zinc bis(aminoacetate) (CAS: 7214-08-6)?

Zinc bis(aminoacetate) (CAS: 7214-08-6) is primarily used in the pharmaceutical ...

7214-08-6Zinc bis(aminoacetat...
Compound Q&A

How should Adamantan-1-ylmethanol (CAS: 770-71-8) be stored?

Adamantan-1-ylmethanol should be stored in a cool, dry, and well-ventilated plac...

770-71-8Adamantan-1-ylmethan...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.