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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 25: Fundamentals of Perovskite Photovoltaics IV (joint session CPP/DS/HL)

CPP 25.5: Vortrag

Dienstag, 21. März 2017, 15:15–15:30, ZEU 222

Advances in Vapour Deposition of Metal-Halide Perovskite Thin-Films for Solar Cells — •Juliane Borchert, Jay B. Patel, Henry J. Snaith, and Michael B. Johnston — Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX13PU, UK

Hybrid metal-halide perovskite materials are promising absorber materials both for use in single junction and tandem solar cells. A particular focus in recent research has been on the fabrication of perovskite absorber layers from solution. Alternatively, perovskite thin-films can also be deposited using co-evaporation in vacuum. This method offers several benefits. The obtained films show high uniformity over large surface areas. Thus the technique is well suited to the fabrication of large-area planar heterojunction solar cells. Additionally, the uniform film thickness makes the evaporated films ideal for precision characterisation of the optical properties of metal halide perovskite materials. Furthermore, the vapour deposition is solvent-free, which makes it compatible with a wide range of substrates and interlayers. This is for example advantageous in the fabrication of tandem solar cells. Here we present current advances in the understanding of the influence that different process variables have on the quality of the obtained films, as well as the application of co-evaporated perovskite absorber layers in devices.