Hot carrier transfer processes in nonstoichiometric titanium hydride

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dc.contributor.authorWang, Pen_AU
dc.contributor.authorIles, GNen_AU
dc.contributor.authorMole, RAen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorWen, Xen_AU
dc.contributor.authorAguey-Zinsou, KFen_AU
dc.contributor.authorShrestha, SKen_AU
dc.contributor.authorConibeer, Gen_AU
dc.date.accessioned2024-12-20T02:39:57Zen_AU
dc.date.available2024-12-20T02:39:57Zen_AU
dc.date.issued2017-07-25en_AU
dc.date.statistics2024-09-25en_AU
dc.description.abstractThe absorber of the hot carrier solar cell (HCSC) needs to have a considerably reduced hot carrier thermalisation rate, in order to maintain the photo-generated hot carriers for enough time such that they can be extracted. The slow carrier cooling effect is predicted in materials in which the phononic band gap is sufficiently large to block the Klemens decay. Binary compounds with a large mass ratio between the constituent elements are likely to have large phononic band gap. Titanium hydride is one of these binary compounds that has the potential to become an absorber of the HCSC. Whilst a large phononic gap has been observed in stoichiometric TiH2, it has not been experimentally confirmed for hydrogen deficient TiH x (where x < 2). In this article, we report the phonon density of states of TiH1.65 measured using inelastic neutron scattering and presented to clearly show the phononic band gap. We also present the carrier thermalisation process of a TiH x (1< x <2) thin film by transient absorption, and estimate the carrier cooling time in this material. © 2017 The Japan Society of Applied Physics.en_AU
dc.identifier.articlenumber08ma10en_AU
dc.identifier.citationWang, P., Iles, G. N., Mole, R. A., Yu, D., Wen, X., Aguey-Zinsou, K.-F., Shrestha, S., & Conibeer, G. (2017). Hot carrier transfer processes in nonstoichiometric titanium hydride. Japanese Journal of Applied Physics, 56(8S2), 08MA10. doi:10.7567/JJAP.56.08MA10en_AU
dc.identifier.issn0021-4922en_AU
dc.identifier.issn1347-4065en_AU
dc.identifier.issue8S2en_AU
dc.identifier.journaltitleJapanese Journal of Applied Physicsen_AU
dc.identifier.urihttps://doi.org/10.7567/jjap.56.08ma10en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15849en_AU
dc.identifier.volume56en_AU
dc.publisherIOP Publishingen_AU
dc.subjectCarriersen_AU
dc.subjectTitaniumen_AU
dc.subjectHydridesen_AU
dc.subjectSolar cellsen_AU
dc.subjectHeaten_AU
dc.subjectHydrogenen_AU
dc.subjectThin Filmsen_AU
dc.subjectMaterialsen_AU
dc.subjectTitanium hydridesen_AU
dc.subjectStoichiometryen_AU
dc.subjectPhotovoltaic cellsen_AU
dc.titleHot carrier transfer processes in nonstoichiometric titanium hydrideen_AU
dc.typeJournal Articleen_AU
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