stillingsbetegnelse:
PhD scholarship in Modelling of ultrafast scattering experiments probing charge transfer in solar cells

jobbeskrivelse:
At DTU Energy, we have considerable experience with development of 3rd generation solar cells, specifically as regards scale-up to devices that may be manufactured at high speed in large volume. To become truly competitive as an important part of the energy supply in the future society, relying entirely on sustainable energy, we must acquire a better understanding of the fundamental processes of charge generation and transport in 3rd generation solar cells. At DTU Energy, we are leading experts in characterization of the crucial nanostructures governing solar cell performance, but in order to model and manage charge generation and transport in solar cells, we need to understand not only the static structures, but also the dynamic properties of the system. See also below for a further description of the department and the research section. Responsibilities and tasks - In this project, the PhD candidate will work on extending a newly developed model for imaging of instantaneous electron currents between atoms by hard X-ray resonant scattering to larger dimensions (nano-domains) by exploiting momentum transfers at lower energy resonances. The case of conducting polymer heterojunctions in nano-particles will constitute the first and main focus for the project. Extensions to other relevant systems will include defects in nano-crystals and organic-inorganic systems. - The work will be focused on the theoretical level, with the purpose of designing and planning of appropriate model systems for imaging of instantaneous charge currents in photovoltaic processes. This should be achieved by providing the fundamental understanding to design and interpret ultrafast resonant X-ray scattering experiments, to be performed at fourth-generation X-ray sources, the free electron lasers. - In the final stages of the project, the candidate will be involved in experimentation and data analysis of femtosecond time-resolved imaging of photo-physical processes in solar cell materials. - A substantial part of the work will take place in close collaboration with researchers at the Center for Free-Electron Laser Science (CFEL) theory division in Hamburg, and the candidate should therefore expect to spend a considerable part of the project (at least 1 year), living in Hamburg. - As the direct outcome of the project, we aim for 1: A modelling and analysis framework for ultrafast resonant X-ray scattering experiment probing instantaneous charge currents in a polymer nano-heterojunction. 2: An extension of the experiment design and analysis to models for charge transfer at grain boundaries and electrode contacts. 3: Model and analysis for imaging of charge trapping at defects. - The project constitutes a central part of the theoretical framework behind SEEWHI, a 5 year project, funded by the European Research Council and aimed at a breakthrough in high-efficiency, large scale 3rd generation solar cells. Qualifications Candidates should have a master's degree in Physics, Chemistry or a similar relevant degree with an academic level equivalent to the master's degree in Engineering. Approval and Enrolment The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide. Assessment - The assessment of the applicants will be made by Senior Researcher, Jens Wenzel Andreasen, Head of Section Luise Theil Kuhn, and Professor at CFEL, Robin Santra - The candidate must have a strong background and competences in computational physics or chemistry - We specifically welcome experience and qualifications in electronic structure theory for large scale problems and molecular dynamics We offer We offer an interesting and challenging job in an international environment focusing on education, research, public-sector consultancy and innovation, which

Arbejdsgiver Navn: Danmarks Tekniske Universitet

Arbejdsgiver telefonnummer: 45252525

Arbejdsgiver faxnummer: 45881799

Job kort beskrivelse:
Undervisning og forskning på universiteter og højere læreranstalter

land: Danmark

region: Hovedstaden

krævede uddannelse: Ikke angivet

Kilde til jobtilbud: AMS, Offentlige arbejdsformidlinger, Danmark