{"id":439,"date":"2021-09-24T12:49:19","date_gmt":"2021-09-24T11:49:19","guid":{"rendered":"https:\/\/research.kent.ac.uk\/mee\/?p=439"},"modified":"2021-09-24T12:53:08","modified_gmt":"2021-09-24T11:53:08","slug":"mee-group-research-on-hybrid-perovskites-selected-as-isis-science-highlight","status":"publish","type":"post","link":"https:\/\/research.kent.ac.uk\/mee\/mee-group-research-on-hybrid-perovskites-selected-as-isis-science-highlight\/","title":{"rendered":"MEE Group Research on Hybrid Perovskites Selected as ISIS Science Highlight"},"content":{"rendered":"

Materials with the perovskite structure have a wide range of fascinating and industrially important properties including magnetism, catalysis and ionic conduction. The basic perovskite structure takes the form ABX3<\/sub>, incorporating larger A-site site cations within a framework made from smaller octahedral B-site cations linked through X-site anions to six B-site neighbours. The range of applications of the materials come from the fact that the structure is able to accommodate many different A, B and X ions with a range of charges.<\/p>\n

While purely inorganic perovskites have been a focus of much study, including within the MEE group, for a number of years it is also possible to introduce organic building blocks into this structure. These inorganic-organic perovskites are often refered to as hybrid perovskites due to their ability to include organic cations on both their A- and X-sites. Examples of this include HCO2<\/sub>–<\/sup> on the X site, in a family of phases studied for their ferroelectrics and multiferroics properties, and compounds based on organic cations, such as [(CH3<\/sub>)2<\/sub>NH2<\/sub>]PbI3<\/sub>, which are promising materials for next-generation solar cells and are currently studied by other researchers within the MEE group to stabilise their functional cubic states by iodine treatment.<\/p>\n

Research that formed part of the Masters thesis of Lydia Burley who was supervised by Paul Saines made hybrid perovskites with the composition ALn(HCO2<\/sub>)(C2<\/sub>O4<\/sub>)1.5 <\/sub>(where Ln represents a lanthanide, in this case Tb, Dy, Ho or Er). This family of materials are the first time a hybrid perovskite has featured ordered anion vacancies combined with an A-site cation with a single charge and a triply charged B3+<\/sup> ion. Unfortunately the A-site cation was extensively disordered, a not uncommon problem in related materials, such that the A-site cation could not be identified from the crystal structure of the material. A solution of this was found by using inelastic neutron scattering (INS) on the Tosca Instrument at ISIS, in collaboration with Svemir Rudi\u0107, which allowed the A site cation to be clearly identified as [(CH3<\/sub>)2<\/sub>NH2<\/sub>)]+<\/sup>, with support from infrared spectroscopy.<\/p>\n

This study shows the importance of INS to this area of research due to the techniques high sensitivity to the bonds between hydgrogen and other atoms, which are a key part of the organic components of these materials. INS offers the potential use in a much wider range of perovskite with organic components to confirm their composition, which is important to optimise hybrid perovskites with disordered A-site cations for applications. The key role of INS in this study, which is published here<\/a> featured and will be highlighted on the cover of the European Journal of Inorganic Chemistry <\/em>in October, lead to the work being selected as an ISIS Neutron and Muon Source Science Highlight<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Materials with the perovskite structure have a wide range of fascinating and industrially important properties including magnetism, catalysis and ionic conduction. The basic perovskite structure takes the form ABX3, incorporating larger A-site site cations within a framework made from smaller octahedral B-site cations linked through X-site anions to six B-site neighbours. The range of applications […]<\/p>\n","protected":false},"author":671,"featured_media":448,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-439","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"acf":[],"_links":{"self":[{"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/posts\/439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/users\/671"}],"replies":[{"embeddable":true,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/comments?post=439"}],"version-history":[{"count":4,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/posts\/439\/revisions"}],"predecessor-version":[{"id":454,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/posts\/439\/revisions\/454"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/media\/448"}],"wp:attachment":[{"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/media?parent=439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/categories?post=439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/research.kent.ac.uk\/mee\/wp-json\/wp\/v2\/tags?post=439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}