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

Chengsheng Ni, Gordon Hedley, Julia Payne, Vladimir Svrcek, C McDonald, Lethy Krishnan Jagadamma, Paul Edwards, Robert Martin, Gunisha Jain, Darragh Carolan, D Mariotti, P Maguire, Ifor Samuel, John Irvine

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A metal-organic hybrid perovskite (CH3NH3PbI3) with three-dimensional 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 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 (CH3NH3)3Bi2I9 with nanometre-sized core clusters of Bi2I93- surrounded by insulating CH3NH3+ was prepared via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localised excitons coupled with delocalised excitons from intercluster 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.
LanguageEnglish
JournalNature Communications
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Aug 2017

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Charge carriers
Metal halides
Photoluminescence
Metals
Excitation energy
Hybrid materials
Quantum yield
Energy transfer
Conversion efficiency
Solar cells
Energy gap
LDS 751
Processing
Costs

Keywords

  • perovskite

Cite this

Ni, C., Hedley, G., Payne, J., Svrcek, V., McDonald, C., Jagadamma, L. K., ... Irvine, J. (2017). Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters. Nature Communications, 8(1). https://doi.org/10.1038/s41467-017-00261-9
Ni, Chengsheng ; Hedley, Gordon ; Payne, Julia ; Svrcek, Vladimir ; McDonald, C ; Jagadamma, Lethy Krishnan ; Edwards, Paul ; Martin, Robert ; Jain, Gunisha ; Carolan, Darragh ; Mariotti, D ; Maguire, P ; Samuel, Ifor ; Irvine, John. / Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters. In: Nature Communications. 2017 ; Vol. 8, No. 1.
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Ni, C, Hedley, G, Payne, J, Svrcek, V, McDonald, C, Jagadamma, LK, Edwards, P, Martin, R, Jain, G, Carolan, D, Mariotti, D, Maguire, P, Samuel, I & Irvine, J 2017, 'Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters', Nature Communications, vol. 8, no. 1. https://doi.org/10.1038/s41467-017-00261-9

Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters. / Ni, Chengsheng; Hedley, Gordon; Payne, Julia; Svrcek, Vladimir; McDonald, C; Jagadamma, Lethy Krishnan; Edwards, Paul; Martin, Robert; Jain, Gunisha; Carolan, Darragh; Mariotti, D; Maguire, P; Samuel, Ifor; Irvine, John.

In: Nature Communications, Vol. 8, No. 1, 01.08.2017.

Research output: Contribution to journalArticle

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T1 - Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

AU - Ni, Chengsheng

AU - Hedley, Gordon

AU - Payne, Julia

AU - Svrcek, Vladimir

AU - McDonald, C

AU - Jagadamma, Lethy Krishnan

AU - Edwards, Paul

AU - Martin, Robert

AU - Jain, Gunisha

AU - Carolan, Darragh

AU - Mariotti, D

AU - Maguire, P

AU - Samuel, Ifor

AU - Irvine, John

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PY - 2017/8/1

Y1 - 2017/8/1

N2 - A metal-organic hybrid perovskite (CH3NH3PbI3) with three-dimensional 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 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 (CH3NH3)3Bi2I9 with nanometre-sized core clusters of Bi2I93- surrounded by insulating CH3NH3+ was prepared via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localised excitons coupled with delocalised excitons from intercluster 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.

AB - A metal-organic hybrid perovskite (CH3NH3PbI3) with three-dimensional 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 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 (CH3NH3)3Bi2I9 with nanometre-sized core clusters of Bi2I93- surrounded by insulating CH3NH3+ was prepared via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localised excitons coupled with delocalised excitons from intercluster 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.

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Ni C, Hedley G, Payne J, Svrcek V, McDonald C, Jagadamma LK et al. Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters. Nature Communications. 2017 Aug 1;8(1). https://doi.org/10.1038/s41467-017-00261-9