Stefan Oosterhout Email & Phone Number

Delft Area, Netherlands

Stanford, California

At this institution I examined the molecular packing of organic semiconductors for application in solar cells. Synchrotron radiation was used to study the morphology and crystal structure. I have developed a new method to quantify the degree of molecular mixing between two materials that are blended in a bulk heterojunction. An X-ray characterization tool was developed and is available online: https://www-ssrl.slac.stanford.edu/toneygroup/waxstools-software

Golden, Colorado

At this institution, I used the spectroscopic time-resolved microwave conductivity (TRMC) technique as a tool to judge the potential performance of new photovoltaic materials, without the costly need for device fabrication. This tool also helps to understand the recombination processes in organic solar cells by observing the carrier decay as measured by TRMC. This has led to the growing of knowledge on the effect of the chemical structure on optical and electrical properties and, ultimately… Show more At this institution, I used the spectroscopic time-resolved microwave conductivity (TRMC) technique as a tool to judge the potential performance of new photovoltaic materials, without the costly need for device fabrication. This tool also helps to understand the recombination processes in organic solar cells by observing the carrier decay as measured by TRMC. This has led to the growing of knowledge on the effect of the chemical structure on optical and electrical properties and, ultimately, device performance. Show less

Eindhoven University Of Technology

The central theme of the study was to investigate and alter the morphology in hybrid polymer solar cells, using ZnO as inorganic electron acceptor. The efficiency of these solar cells depends critically on the degree of mixing of the ZnO and the polymer component. A ZnO:polymer bulk heterojunction was created by reactive spin coating of a ZnO precursor with a polymer in solution. The precursor forms ZnO during this step. The morphology was altered by changing the ZnO precursor, solvent… Show more The central theme of the study was to investigate and alter the morphology in hybrid polymer solar cells, using ZnO as inorganic electron acceptor. The efficiency of these solar cells depends critically on the degree of mixing of the ZnO and the polymer component. A ZnO:polymer bulk heterojunction was created by reactive spin coating of a ZnO precursor with a polymer in solution. The precursor forms ZnO during this step. The morphology was altered by changing the ZnO precursor, solvent additives, and also functional side groups of the polymer induce a change in morphology. The morphology was characterized by transmission electron microscopy, atomic force microscopy and electron tomography, and the morphology was related to the device performance. Furthermore, a different polymer was used in an attempt to improve device performance by absorbing more low-energy photons. Show less

“TiO2/Au nanocomposites by a surface chemical approach”The focus of the research was to investigate possible penetration of Au nanoparticles into a porous TiO2 structure.

M.Sc., Chemistry

Activities and Societies: Proton studentenvereniging M.Sc. project at department Condensed Matter and Interfaces: "Merbromin, Cu2O.

Vwo

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