Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Singlet fission (SF)"”.
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Designing Planar Silicon Solar Cells for Singlet Fission Sensitization
Singlet fission (SF)-sensitized silicon (Si) solar cells offer a path towards surpassing the Shockley-Queisser efficiency limit for single-junction solar cells. However, realizing efficient charge transfer from the SF material to Si remains a significant challenge that requires careful interface …
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Materials, photophysics and device designs for high efficiency photovoltaics
… the S-Q limit: (i) tandem solar cells, (ii) singlet fission sensitized solar cells and (iii) triplet-triplet annihilation assisted upconversion. Following a review of the relevant background theory for organic semiconductors, colloidal quantum dot (CQD) semiconductors and perovskite …
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Excited State Dynamics of Dyes Bound to Nanocrystals
… light, and the excited dye molecules then transfer an electron to the conduction band (CB) of the NP. These dye-NP systems are used for applications such as solar cells and photocatalysis. This thesis aims to enhance understanding of the fundamental processes governing dye-NP systems, such as …
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Design and synthesis of Push-pull chromophores for cell imaging and OPV devices [Progettazione e sintesi di cromofori Push-pull per l'imaging cellulare e i dispositivi OPV]
… due capitoli, ciascuno dedicato a una specifica sfida scientifica. Il primo capitolo esplora l’ambito della biologia molecolare, dove i cromofori push-pull vengono impiegati come sonde fluorescenti organiche – strumenti indispensabili per il bioimaging, la diagnostica delle malattie e le terapie …
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Synthesis and Optical Characterisation of Diphenylhexatriene Derived Intramolecular Singlet Fission Materials
… of the semiconductor is lost to thermalisation. Singlet fission (SF) is a physical process in certain organic materials that enables the production of two excited states, each with triplet multiplicity, from a lone photoexcited singlet state. It has been widely recognised that integration of an …
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Coherence and Singlet Fission of TIPS-Pentacene Probed by Two-dimensional Electronic Spectroscopy
… of 2DES data, incorporating Fourier transforms (FTs), time-frequency transforms (TFTs) and global analysis. With this framework, we find that cresyl violet exhibits vibrational coherence at 612 cm−1 with a dephasing lifetime of 600 fs. We find that the energy-dependence of this coherence …