Enhanced solar light harvesting and charge transport in dye-sensitized solar cells

Lead Research Organisation: University of Oxford
Department Name: Oxford Physics

Abstract

Dye-sensitized solar cells are moderately efficient with verified solar-to-electrical power conversion efficiencies of over 12% reported. However, even in the state-of-the-art systems only a fraction of the incident sun light is absorbed, implying substantial scope for improvement. Here we develop both state-of-the-art liquid electrolyte based DSCs and contemporary solid-state hybrid DSCs with the target being to considerably enhance the light capture and adsorption in these devices and also significantly improve the charge transport characteristics. Routes to both improve the photonic structure of the solar cells, create improved semiconducting oxide electrodes for enhanced charge transport and collection and develop and optimise new sensitizers for these systems shall be undertaken.

Publications

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Agrawal Saurabh (2013) First principle approach to study role of ionic additives in the solid-state dye-sensitized solar cells in ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY

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Agrawal Saurabh (2013) First principle approach to study role of ionic additives in the solid-state dye-sensitized solar cells in ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY

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Cannavale A (2015) Perovskite photovoltachromic cells for building integration in Energy & Environmental Science

 
Description Discovered organic-inorganic metal halide perovskites could work exceptionally well in photovolatics.
Exploitation Route Triggered a massive research activity in perovskite solar cells worldwide. This is both at research institutions and industry. the direct outputs of this project have been transferred to Oxford PV and enabled them to rise to the forefront of PV development. Assuming successful delivery to a product, this technology has the potential to transform the PV industry, and subsequently the power industry.
Sectors Energy,Environment

 
Description Through the collaboration from this Japanese/UK award the original know how on processing perovskite materials was transferred from japan to UK. The potential transformative impact of perovskites was not realised by the Japanese collaborators, but through work in Oxford a stream of discoveries enabled the realisation of efficient perovskite solar cells which has lead to the growth of Oxford PV ltd to become a world force in emerging PV.
First Year Of Impact 2011
Sector Chemicals,Digital/Communication/Information Technologies (including Software),Electronics,Energy,Environment,Manufacturing, including Industrial Biotechology
Impact Types Societal,Economic

 
Description Oxford PV 
Organisation Oxford Photovoltaics
Country United Kingdom 
Sector Private 
PI Contribution We have made cells and materials and supplied them to Oxford PV for characterisation and/or further material deposition.
Collaborator Contribution Oxford PV have supplied some Silicon PV cells upon which to coat the perovskite cells for the all perovskite tandem cells. They have also deposited ITO conducting oxide upon our cells to complete our devices. In addition they have allowed access to other characterisation facilities including optical microscope and x-ray diffraction analysis.
Impact One of the main outcomes is that Oxford PV has raised in the region of £30M external investment, with the technology based on technology originally conceived in Oxford University. The company has benefited from continuing fundamental advancements of the technology, driven from our university lab. we are now working closely together on this project and will collaboratively deliver record efficiency solar cells.
Start Year 2016
 
Description Various Radio Interviews 
Form Of Engagement Activity A broadcast e.g. TV/radio/film/podcast (other than news/press)
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Public/other audiences
Results and Impact Radio Interviews for BBC world service and news reports
Year(s) Of Engagement Activity 2011,2012,2013,2014,2015
URL http://www.bbc.co.uk/search?q=henry+snaith