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Full-Text Articles in Physical Sciences and Mathematics
Impact Of Fabrication Parameters On The Internal Structure Of Poly(3-Hexylthiophene) Nanoparticles, Dana Desiree Algaier
Impact Of Fabrication Parameters On The Internal Structure Of Poly(3-Hexylthiophene) Nanoparticles, Dana Desiree Algaier
Doctoral Dissertations
Morphological control of organic functional materials is central to understanding and improving upon current technologies. The ability to create hierarchical assemblies with purposeful design from nano to meso scale has remained largely unattainable. This body of work aims to provide a foundation for creating nanoscale domains of poly (3-hexylthiophene) (P3HT) that can be used as building blocks to larger scale assemblies. We present a method for the fabrication of P3HT nanoparticles on the ability to vary the particle size and more importantly, the internal structure. We have identified the oil phase and surfactant as parameters able to influence the nature …
Time-And Polarization-Resolved Photoluminescence Studies Of Directional Coupling In Isolated Semiconductor Nanostructures, Joelle A. Labastide
Time-And Polarization-Resolved Photoluminescence Studies Of Directional Coupling In Isolated Semiconductor Nanostructures, Joelle A. Labastide
Doctoral Dissertations
TIME-AND POLARIZATION-RESOLVED STUDIES OF DIRECTIONAL COUPLING IN ISOLATED SEMICONDUTOR NANOSTRUCTURES MAY 2015 JOELLE A. LABASTIDE, B.S. UNIVERSITY OF MASSACHUSESSTS AMHERST Ph.D., UNIVERSITY OF MASSACHUSETTS AMERST Directed by Professor Michael D. Barnes Development of new materials and assembly strategies for organic semiconductor-based optoelectronic materials is a problem of great interest worldwide, as researchers seek to resolve the questions pertinent to the creation of inexpensive, reliable, efficient, and stable active layer components. Organic semiconductors as the basis for photovoltaic active layers show significant promise for these applications. However, there is still much that needs to be understood about the molecular scale structural …
On The Assembly Of Functionalized Cdse Nanorods, Sirinya Chantarak
On The Assembly Of Functionalized Cdse Nanorods, Sirinya Chantarak
Doctoral Dissertations
High aspect ratio (AR) CdSe nanorods (NRs) of well-defined sizes were synthesized to optimize the geometries of photovoltaic devices made from these nanorods. Long-range ordering of hexagonal arrays of high AR NRs is achieved by a combination of controlled solvent evaporation and the use of an applied electric field. Regioregular P3HT chains and oligothiophene were functionalized with ligating end-groups to provide contact to the NRs. Vertically oriented assemblies of CdSe NRs functionalized with terthiophene and polythiophene are also obtained. Hexagonal arrays of these nanocomposites were characterized by transmission electron microscopy (TEM). Three types of polythiophenes: poly(3-hexylthiol thiophene), poly(3-hexylamine thiophene), and …