Non-Standard Thin-Film Absorber Materials for Photovoltaics
Peter Kubiak a, Pippa Stephens a, Andrew Johnson a, Petra Cameron a
a University of Bath, Bath BA2 7AY, United Kingdom, United Kingdom
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Swansea, United Kingdom, 2016 June 29th - July 1st
Organizers: James Durrant, Henry Snaith and David Worsley
Poster, Peter Kubiak, 230
Publication date: 28th March 2016

The long-standing dominance of silicon technologies over the solar cell market is being challenged by a number of thin film technologies.  Cadmium telluride systems are already being deployed in many areas as an alternative to the more established silicon, while other technologies such as CIGS (copper indium gallium selenide) and hybrid perovskites are quickly approaching the point where they could become economically viable.  Despite this, there are still many materials which remain untested and undiscovered.  One candidate group of materials are binary and tertiary metal chalcogenides, as many of these materials are highly stable and have favourable electronic properties.  In many cases synthesis of these materials can be precisely controlled to get the desired stoichiometry and phase. 

The design of a thin film solar cell must be optimised for each photoactive material separately – suitable hole and electron blocking materials and contact layers must be selected based on the electronic, chemical and crystallographic properties of the active layer.  In this poster I will be outlining the process of taking a candidate photoactive material based on inexpensive and environmentally benign metals and creating a solar cell.  Firstly a viable route must be found for the synthesis of the material and modified to produce the optimum film thickness and morphology.  The electronic properties of the material are studied and suitable contacting layers are chosen to efficiently extract charge from the active material.  Finally, a full device is fabricated and its performance and properties are measured.



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