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Issue 10, 2015
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Highly efficient planar perovskite solar cells through band alignment engineering

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Abstract

The simplification of perovskite solar cells (PSCs), by replacing the mesoporous electron selective layer (ESL) with a planar one, is advantageous for large-scale manufacturing. PSCs with a planar TiO2 ESL have been demonstrated, but these exhibit unstabilized power conversion efficiencies (PCEs). Herein we show that planar PSCs using TiO2 are inherently limited due to conduction band misalignment and demonstrate, with a variety of characterization techniques, for the first time that SnO2 achieves a barrier-free energetic configuration, obtaining almost hysteresis-free PCEs of over 18% with record high voltages of up to 1.19 V.

Graphical abstract: Highly efficient planar perovskite solar cells through band alignment engineering

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Publication details

The article was received on 24 Aug 2015, accepted on 24 Aug 2015 and first published on 25 Aug 2015


Article type: Communication
DOI: 10.1039/C5EE02608C
Citation: Energy Environ. Sci., 2015,8, 2928-2934
  • Open access: Creative Commons BY-NC license
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    Highly efficient planar perovskite solar cells through band alignment engineering

    J. P. Correa Baena, L. Steier, W. Tress, M. Saliba, S. Neutzner, T. Matsui, F. Giordano, T. J. Jacobsson, A. R. Srimath Kandada, S. M. Zakeeruddin, A. Petrozza, A. Abate, M. K. Nazeeruddin, M. Grätzel and A. Hagfeldt, Energy Environ. Sci., 2015, 8, 2928
    DOI: 10.1039/C5EE02608C

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