Vacuum Deposited Triple‐Cation Mixed‐Halide Perovskite Solar Cells
By L. Gil‐Escrig, Cristina Momblona, M. La-Placa, Pablo P. Boix, M. Sessolo, Henk J. Bolink. 2018
149 citations recorded by the source corpus.
Hybrid lead halide perovskites are promising materials for future photovoltaics applications. Their spectral response can be readily tuned by controlling the halide composition, while their stability is strongly dependent on the film morphology and on the type of organic cation used. Mixed cation and mixed halide systems have led to the most efficient and stable perovskite solar cells reported, so far they are prepared exclusively by solution‐processing. This might be due to the technical difficulties associated with the vacuum deposition from multiple thermal sources, requiring a high level of control over the deposition rate of each precursor during the film formation. In this report, thermal vacuum deposition with multiple sources (3 and 4) is used to prepare for the first time, multications/anions perovskite compounds. These thin‐film absorbers are implemented into fully vacuum deposited solar cells using doped organic semiconductors. A maximum power conversion efficiency of 16% is obtained, with promising device stability. The importance of the control over the film morphology is highlighted, which differs substantially when these compounds are vacuum processed. Avenues to improve the morphology and hence the performance of fully vacuum processed multications/anions perovskite solar cells are proposed.
Subfields: Electrical and Electronic Engineering, Materials Chemistry, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/e3813e8258c09fcb41d8d00f50c9cb56e920c306
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Citations in the corpus
- Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon (2020, background): “More efficient—but also more complex—thermal co-evaporation enables textured tandems; however, the large vapor-pressure difference between the organic and inorganic components demands a high level of control over the deposition rates of each precursor during the evaporation process (21).”