Document Type

Theses, Ph.D

Rights

This item is available under a Creative Commons License for non-commercial use only

Disciplines

Nuclear physics

Publication Details

Successfully submitted for the award of Doctor of Philosophy (Ph.D) to the Dublin Institute of Technology 2007.

Abstract

The aim of this study was to investigate the feasibility of Quantum Dot Solar Concentrators (QDSCs). Quantum Dots offer the advantages of having broad absorption specr4a, tunable emission and improved stability. A range of Cadmium Selenide/|Zince Sulphide Quantum Dots were characterized in solution and composite form using time-resolved and steady state spectroscopie techniques and the stability of the composite samples was investigated over a 6 month period. A number of matrix materials were compared and the most suitable type for fabrication of QDSCs were identified. Techniques for fabrication and characterization of QDSCs were developed and a range of different QDSC types were produced and electrically charcterised. The power output and concentration factors of QDSCs containing various QD concentrations, of different geometries and of varying sample thickness were measured and compared. The use of near infrared QDs and the mixing of different QD types were also investigated to extend the spectral range utilised by the QDSC. Results indicate that Quantum Dots with higher quantum yields and increase stability are required in order for QDSCs to become feasible.

DOI

10.21427/D73K68

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