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Issue 3, 2014
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Sub-150 °C processed meso-superstructured perovskite solar cells with enhanced efficiency

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Abstract

The ability to process amorphous or polycrystalline solar cells at low temperature (<150 °C) opens many possibilities for substrate choice and monolithic multijunction solar cell fabrication. Organometal trihalide perovskite solar cells have evolved rapidly over the last two years, and the CH3NH3PbX3 (X = Cl, I or Br) material is processed at low temperature. However the first embodiments of the solar cell were composed of high temperature processed (500 °C) compact and mesoporous layers of TiO2. The sintering of the mesoporous TiO2 has been negated by replacing this with a mesoporous insulating scaffold in the meso-superstructured solar cell (MSSC), yet the high temperature processed compact TiO2 layer still persists in the most efficient devices. Here we have realised a low temperature route for compact TiO2, tailored for perovskite MSSC operation. With our optimized formulation we demonstrate full sun solar power conversion efficiencies of up to 15.9% in an all low temperature processed solar cell.

Graphical abstract: Sub-150 °C processed meso-superstructured perovskite solar cells with enhanced efficiency

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Publication details

The article was received on 12 Nov 2013, accepted on 23 Dec 2013 and first published on 02 Jan 2014


Article type: Paper
DOI: 10.1039/C3EE43707H
Author version available: Download Author version (PDF)
Citation: Energy Environ. Sci., 2014,7, 1142-1147
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    Sub-150 °C processed meso-superstructured perovskite solar cells with enhanced efficiency

    K. Wojciechowski, M. Saliba, T. Leijtens, A. Abate and H. J. Snaith, Energy Environ. Sci., 2014, 7, 1142
    DOI: 10.1039/C3EE43707H

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