Picture of industrial chimneys polluting horizon

Open Access research shaping international environmental governance...

Strathprints makes available scholarly Open Access content exploring environmental law and governance, in particular the work of the Strathclyde Centre for Environmental Law & Governance (SCELG) based within the School of Law.

SCELG aims to improve understanding of the trends, challenges and potential solutions across different interconnected areas of environmental law, including capacity-building for sustainable management of biodiversity, oceans, lands and freshwater, as well as for the fight against climate change. The intersection of international, regional, national and local levels of environmental governance, including the customary laws of indigenous peoples and local communities, and legal developments by private actors, is also a signifcant research specialism.

Explore Open Access research by SCELG or the School of Law. Or explore all of Strathclyde's Open Access research...

Strathprints

Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Ni, Chengsheng and Hedley, Gordon J. and Payne, Julia and Svrcek, Vladimir and McDonald, Calum and Jagadamma, Lethy Krishnan and Edwards, Paul and Martin, Robert and Mariotti, Davide and Maguire, Paul and Samuel, Ifor and Irvine, John (2017) Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters. Nature Communications, 8. ISSN 2041-1723

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

A metal-organic hybrid perovskite with 3-D framework of metal halide octahedra has been reported as a low-cost, solution processable absorber for a thin film solar cell with a power conversion efficiency over 20 %. Low-dimensional layered perovskites with metal halide slabs separated by the insulating organic layers are reported to show higher stability, but the efficiencies of the solar cells are limited by the anisotropy of the crystals because of the confinement of excitons. In order to explore the confinement and transport of excitons in zero-dimensional metal-organic hybrid materials, a highly-orientated film of methylammonium bismuth halide, (CH3NH3)3Bi2I9, with a nanometer sized core cluster of Bi2I93- surrounded by insulating CH3NH3+, was deposited on a quartz substrate via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localized excitons coupled with a small number of delocalised excitons from inter-cluster energy transfer. The abrupt increase in photoluminescence quantum yield at excitation energy above twice band gap could indicate a quantum cutting due to the low dimensionality.

Item type: Article
ID code: 60928
Keywords: perovskite, metal-organic, metal-halide, octahedra, absorber , thin-film solar cell, photoluminescence quantum yield, Physics, Chemistry, Biochemistry, Genetics and Molecular Biology(all), Chemistry(all), Physics and Astronomy(all)
Subjects: Science > Physics
Science > Chemistry
Department: Faculty of Science > Physics
Technology and Innovation Centre > Bionanotechnology
Technology and Innovation Centre > Photonics
Strategic Research Themes > Measurement Science and Enabling Technologies
Depositing user: Pure Administrator
Date deposited: 14 Jun 2017 08:20
Last modified: 25 May 2018 02:41
Related URLs:
URI: https://strathprints.strath.ac.uk/id/eprint/60928
Export data:
CORE (COnnecting REpositories)