Highly efficient planar perovskite solar cells through band alignment engineering
By J. C. Baena, L. Steier, W. Tress, Michael Saliba, Stefanie Neutzner, Taisuke Matsui, F. Giordano, T. Jacobsson, A. R. Kandada, S. M. Zakeeruddin and 5 more. 2015
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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.
Subfields: Electrical and Electronic Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/1240c4ae257f5d82bcd429971de0ba47992cc95b
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In Electrical and Electronic Engineering
- A. Hagfeldt
- W. Tress
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- Michael Saliba
- A. Abate
- Juan‐Pablo Correa‐Baena
- Zhaoning Song
- M. Heben