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Functionalisation of Lead Halide Perovskites with Anthracene

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posted on 12.02.2021, 02:02 by Jake Hardy
After only a decade’s worth of research and development, lead halide perovskites are set to become the basis of a new generation of cheap and highly efficient photovoltaic devices. However, traditional lead halide perovskites such as methylammonium lead triiodide or formamidinium lead triiodide suffer from an intolerance to moisture and high temperatures. 2D Ruddlesden-Popper lead halide perovskites and all inorganic caesium lead halide perovskites have gained attention in recent years due to their improved stability with respect to these environmental conditions.

Like all solar cell technologies, simple lead halide perovskite solar cells have a theoretical maximum efficiency limit of around 30%. Coupling organic fluorophores to semiconducting nanomaterials is a potential route to circumventing and exceeding this efficiency limit. In this work attempts are made to couple anthracene functional groups to 2D Ruddlesden-Popper lead halides and caesium lead trihalide perovskites. The results of this study show that energy transfer does occur between anthracene and caesium lead trihalide nanocrystals, resulting in increased perovskite emission. These results show that organic fluorophores can be utilised in conjunction with perovskite semiconductors, opening up the possibility of circumventing efficiency limits for perovskite photovoltaic technologies.

History

Advisor 1

Davis, Nathaniel

Copyright Date

11/02/2021

Date of Award

11/02/2021

Publisher

Victoria University of Wellington - Te Herenga Waka

Rights License

Author Retains Copyright

Degree Discipline

Chemistry

Degree Grantor

Victoria University of Wellington - Te Herenga Waka

Degree Level

Masters

Degree Name

Master of Science

Victoria University of Wellington Unit

Macdiarmid Institute for Advanced Materials and Nanotechnology

ANZSRC Type Of Activity code

4 EXPERIMENTAL RESEARCH

Victoria University of Wellington Item Type

Awarded Research Masters Thesis

Language

en_NZ

Victoria University of Wellington School

School of Chemical and Physical Sciences