Publications

BibTex format

@article{Sotelo-Vazquez:2017:10.1002/adfm.201605413,
author = {Sotelo-Vazquez, C and Quesada-Cabrera, R and Ling, M and Scanlon, DO and Kafizas, A and Thakur, PK and Lee, T-L and Taylor, A and Watson, GW and Palgrave, RG and Durrant, JR and Blackman, CS and Parkin, IP},
doi = {10.1002/adfm.201605413},
journal = {ADVANCED FUNCTIONAL MATERIALS},
title = {Evidence and Effect of Photogenerated Charge Transfer for Enhanced Photocatalysis in WO3/TiO2 Heterojunction Films: A Computational and Experimental Study},
url = {http://dx.doi.org/10.1002/adfm.201605413},
volume = {27},
year = {2017}
}

Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Semiconductor heterojunctions are used in a wide range of applications including catalysis, sensors, and solar-to-chemical energy conversion devices. These materials can spatially separate photogenerated charge across the heterojunction boundary, inhibiting recombination processes and synergistically enhancing their performance beyond the individual components. In this work, the WO3/TiO2 heterojunction grown by chemical vapor deposition is investigated. This consists of a highly nanostructured WO3 layer of vertically aligned nanorods that is then coated with a conformal layer of TiO2. This heterojunction shows an unusual electron transfer process, where photogenerated electrons move from the WO3 layer into TiO2. State-of-the-art hybrid density functional theory and hard X-ray photoelectron spectroscopy are used to elucidate the electronic interaction at the WO3/TiO2 interface. Transient absorption spectroscopy shows that recombination is substantially reduced, extending both the lifetime and population of photogenerated charges into timescales relevant to most photocatalytic processes. This increases the photocatalytic efficiency of the material, which is among the highest ever reported for a thin film. In allying computational and experimental methods, this is believed to be an ideal strategy for determining the band alignment in metal oxide heterojunction systems.
AU  - Sotelo-Vazquez,C
AU  - Quesada-Cabrera,R
AU  - Ling,M
AU  - Scanlon,DO
AU  - Kafizas,A
AU  - Thakur,PK
AU  - Lee,T-L
AU  - Taylor,A
AU  - Watson,GW
AU  - Palgrave,RG
AU  - Durrant,JR
AU  - Blackman,CS
AU  - Parkin,IP
DO  - 10.1002/adfm.201605413
PY  - 2017///
SN  - 1616-301X
TI  - Evidence and Effect of Photogenerated Charge Transfer for Enhanced Photocatalysis in WO3/TiO2 Heterojunction Films: A Computational and Experimental Study
T2  - ADVANCED FUNCTIONAL MATERIALS
UR  - http://dx.doi.org/10.1002/adfm.201605413
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000400819700002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/48953
VL  - 27
ER  -

Download

DrAndreasKafizas

Contact

Location

Summary

Citation

BibTex format

RIS format (EndNote, RefMan)