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dc.contributor.authorSurassa Sriwichaien_US
dc.contributor.authorRowshanak Iranien_US
dc.contributor.authorFanxing Xien_US
dc.contributor.authorDennis Friedrichen_US
dc.contributor.authorChristian Höhnen_US
dc.contributor.authorIbbi Y. Ahmeten_US
dc.contributor.authorNatda Wetchakunen_US
dc.contributor.authorFatwa F. Abdien_US
dc.description.abstractThe emergence of BiVO4 as one of the most promising photoanodes for solar water splitting is largely driven by the success in dopant introduction and optimization to improve its photoelectrochemical performance. To this end, although less commonly used, several trivalent ions (e.g., In3+, Gd3+) that substitute Bi3+ have also been demonstrated to be effective dopants, which can increase the photocurrent of BiVO4 photoanodes. However, the main factor behind such improvement is still unclear as various explanations were proposed in the literature. Herein, Gd3+ is introduced to substitute Bi3+ in spray-deposited BiVO4 films, which enables up to a ∼2-fold photocurrent increase. Further analysis suggests that Gd-doping enhances the carrier separation in BiVO4 and does not affect the catalytic and optical properties. Indeed, time-resolved microwave conductivity measurements reveal that the carrier mobility of BiVO4 is increased by 50% with the introduction of Gd, while the carrier lifetime is unaffected. This mobility increase is rationalized to be a result of a higher degree of monoclinic lattice distortion in Gd-doped BiVO4, as evident from the X-ray diffraction and Raman spectroscopy data. Overall, these findings provide important insights into the nature and the underlying role of Gd in improving the performance of BiVO4.en_US
dc.subjectMaterials Scienceen_US
dc.subjectPhysics and Astronomyen_US
dc.titleRole of Gd in Enhancing the Charge Carrier Mobility of Spray–Deposited BiVO<inf>4</inf> Photoanodesen_US
article.title.sourcetitleSolar RRLen_US
article.volume5en_US Berlin für Materialien und Energie (HZB)en_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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