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Record: oai:ARNO:630733

AuteurShanti Maria Liga
TitelComponents-bandgap relationships in hybrid organic-inorganic perovskites
BegeleiderSarah Brittman
Jaar2017
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Van 't Hoff Institute for Molecular Sciences
OpleidingFNWI BSc Scheikunde
SamenvattingOver the last 8 years, hybrid organic-inorganic perovskite solar cells have shown a tremendous increase in power conversion efficiencies, reaching 22.1% in 2016. A remarkable feature of this material is the possibility of controlling its properties by chemical management, namely by changing its elemental composition. One key parameter for solar cells is the optical bandgap, which strongly depends on the elemental composition of the perovskite. The role played by each component in generating the bandgap is still under debate, but it has already been demonstrated through simulations and experimental evidence that it correlates with simple structural features, such as the X-B-X angles and the B-X distance in the octahedral framework, the size of the organic cation and its interactions with the inorganic components. Taking into account these correlations helps in improving the light harvesting efficiency of this material, which can assume a bandgap between 1.1 eV and 3.1 eV depending on the elements of which it is composed. This tunability offers the possibility of fabricating colourful solar cells and suitable materials for tandem solar cells.
Soort document scriptie bachelor
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