Issue 11, 2018

Influence of doped charge transport layers on efficient perovskite solar cells

Abstract

Planar vacuum deposited p–i–n methyl ammonium lead tri-iodide perovskite solar cells are prepared with different electron and hole transporting layers, either doped or undoped. The effect of these layers on the solar cells performance (efficiency and stability) is studied. The main benefit of using doped layers lies in the formation of barrier free charge extraction contacts to the electrodes. However, this comes at the cost of increased residual absorption (reducing the current density and efficiency of the cells) and a decreased stability. A generic solar cell structure using undoped charge extraction layers is presented, containing a thin layer of a strong electron acceptor in between the transparent electrode and the hole transport layer, that leads to efficiencies of 18% and a significant (>5 times) improvement of the stability.

Graphical abstract: Influence of doped charge transport layers on efficient perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
11 mai 2018
Accepted
03 jul 2018
First published
03 jul 2018

Sustainable Energy Fuels, 2018,2, 2429-2434

Influence of doped charge transport layers on efficient perovskite solar cells

J. Avila, L. Gil-Escrig, P. P. Boix, M. Sessolo, S. Albrecht and H. J. Bolink, Sustainable Energy Fuels, 2018, 2, 2429 DOI: 10.1039/C8SE00218E

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