Regensburg 2019 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 3: Materials for Energy Storage and Conversion

MM 3.5: Talk

Monday, April 1, 2019, 11:15–11:30, H44

2D/3D Organo-metal Hybrid Perovskite Photobatteries — •Angus Mathieson, Felix Deschler, and Michael DeVolder — University of Cambridge, Cambridge, United Kingdom

Increases in the global energy demand necessitate the development of new approaches to energy conversion and storage. In particular, the utilisation of solar energy could provide a basis of evolving technologies capable of meeting modern demands.

By combining the photovoltaic and newfound electrochemical properties of organo-metal hybrid perovskite materials in a single device, a novel photobattery technology is proposed. Utilising the photovoltaic performance of bulk 3D perovskite materials in combination with the intercalation and conversion mechanisms available to Lithium ion species of layered 2D perovskite materials, a device with the ability both to convert light to electrochemical energy and store it is discussed. The motivation for such a device will be demonstrated, with its inherent impact in areas such as off-grid energy solutions and the internet of things. The fabrication techniques are described and characterisation techniques common to both photovoltaic and electrochemical disciplines, with their recent results are discussed. The current understanding of the charge carrier dynamics and device structure under electrochemical cycling are discussed in depth followed by recent developments in device performance and characterisation. Given the potential commercial applicability of the device, ideas to enhance the device performance whilst reducing fabrication cost and increasing scale are used in conclusion.