In this section
@article{Wilson:2023:10.1039/d3se00886j,
author = {Wilson, AA and Shalvey, TP and Kafizas, A and Mumtaz, A and Durrant, JR},
doi = {10.1039/d3se00886j},
journal = {SUSTAINABLE ENERGY & FUELS},
pages = {5066--5075},
title = {Analysis of charge trapping and long lived hole generation in SrTiO<sub>3</sub> photoanodes},
url = {http://dx.doi.org/10.1039/d3se00886j},
volume = {7},
year = {2023}
}
TY - JOUR
AB - Charge carrier dynamics studies of SrTiO3 under applied bias offer the opportunity to gain unique insights into what underpins its state-of-the-art photocatalytic water splitting activity. Herein, time resolved spectroscopic measurements are employed, to investigate the impact of applied bias on the transient and steady state charge carrier dynamics of SrTiO3 across μs–s timescales, and simultaneously measure charge extraction kinetics. A high density of Ti3+ defect states in SrTiO3 photoanodes are identified and associated with prevalent electron trapping into deep states, which is in competition with electron extraction and limits the photocurrent. Despite the high density of trapped electrons, an intrinsically long lifetime for photogenerated holes in SrTiO3 photoanodes is observed using transient absorption spectroscopy, even in the absence of applied bias. This is important for overcoming the slow kinetics and hole accumulation associated with the water oxidation reaction, and for enabling good performance in photocatalytic systems where bias cannot be applied.
AU - Wilson,AA
AU - Shalvey,TP
AU - Kafizas,A
AU - Mumtaz,A
AU - Durrant,JR
DO - 10.1039/d3se00886j
EP - 5075
PY - 2023///
SN - 2398-4902
SP - 5066
TI - Analysis of charge trapping and long lived hole generation in SrTiO<sub>3</sub> photoanodes
T2 - SUSTAINABLE ENERGY & FUELS
UR - http://dx.doi.org/10.1039/d3se00886j
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001077106400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR - https://pubs.rsc.org/en/content/articlelanding/2023/SE/D3SE00886J
UR - http://hdl.handle.net/10044/1/107926
VL - 7
ER -
Dr. Andreas Kafizas
Leader - Solar Coatings Group
e-mail: a.kafizas@imperial.ac.uk
tel: +44(0)20 7594 6752
twitter: @CoatingsSolar