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Title: Charge selective contacts and interfaces for perovskite solar cells with improved stability and efficiency
Author: Schutt, Kelly
ISNI:       0000 0004 8507 8949
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 2020
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This thesis improves charge selective contacts for perovskite solar cells. First, mesoporous modification of n-type metal oxides is discovered to shift the work function of the perovskite, which enables n-type doping at the interface. A chapter on ZnO contacts elucidates chemical degradation mechanisms at the perovskite-ZnO interface, and a methylammonium-free perovskite is employed to suppress these reactions. Next, a Cs salt-treatment is developed to improve both the thermal stability and the Voc of cells on SnO2. In the following chapter, a novel organic p-type is one of the first alternatives to Spiro-OMeTAD that enables 20% power conversion efficiency. Finally, a dopant-free photo-cross-linkable polymer is presented that offers exceptional thermal stability for p-i-n cells, with device lifetimes exceeding 3,000 hours at 85°C.
Supervisor: Snaith, Henry J. Sponsor: Marshall Aid Commemoration Commission
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Charge selective contacts ; Thin film solar ; Perovskite solar cells