PhD Candidate
ELEYTHERIA DARIVIANAKI
elefdariv@materials.uoc.gr
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Title
Halide perovskite solar cells and heterostructures
Supervisor
STOUMPOS KONSTANTINOS, Associate Professor, Materials Science & Technology Dept. - UOC
Committee Members
REMEDIAKIS IOANNIS, Associate Professor, Materials Science & Technology Dept. - UOC
PELEKANOS NIKOLAOS, Professor, Materials Science & Technology Dept. - UOC
Abstract
Μy PhD studies focus on the design and fabrication of solar cell devices based on halide perovskites and their deposition in various heterostructures. The main aspects concern the integration of two different semiconductors in the cells, emphasizing on halide perovskite/III-V semiconductor heterostructures, combined into a monolithic tandem device. The combination of semiconducting materials with different bandgaps enhances the power-photon absorption over a broader wavelength range and thus, solar cell power conversion efficiency. Conceptually, photons of higher energy can be absorbed by the top cell, having a high bandgap energy (~1.7-1.9eV), while photons of low energy can be absorbed by the bottom cell that has a lower bandgap energy (~1.2- 1.4eV). In a closely related direction, the fabrication of perovskite solar cells using GaAs (III-V) semiconductor nanowire arrays as Electron Transporting Layer (ETL) to replace TiO2 will be pursued. The ultimate goal of the Thesis is the fabrication of efficient and stable devices for use in practical applications.