PhD scholarship in microscale thermoelectric materials characterization

Updated: 25 days ago
Job Type: FullTime
Deadline: 09 Aug 2020

Do you want to work in the field of advanced materials and be involved in a high profile research project on the forefront of science? DTU Energy invites applications for a PhD scholarship within development of micro four-point probe (M4PP) based metrology methods for semiconductor characterization within thermoelectrics and nanoelectronics.<br /><br />M4PP measurements offer a unique opportunity to observe thermoelectric transport phenomena in semiconductors. We will use this opportunity to investigate length-dependent heat and charge transport.<br /><br /><strong>Application to thermoelectrics</strong><br />The efficiency of a thermoelectric material, to heat/cool or to convert heat into electricity, depends on thermoelectric material properties like the Seebeck coefficient, electrical resistivity and thermal conductivity. Within this project, we will demonstrate that these three key material properties can be measured simultaneously in just 10 seconds with an M4PP.<br /><br /><strong>Application to nanoelectronics</strong><br />With thermoelectric measurements, we can also evaluate material properties in one-dimensional source/drain contacts, which is of key importance for optimizing semiconductor device performance. With an M4PP we can measure the line resistance of such one-dimensional structures, and within this project we will further develop methods to extract carrier concentration, mobility and temperature coefficient of resistivity.<br /><br /><strong>Responsibilities and tasks </strong><br />You will be part of the national research project “Metrology for Energy and Electronic Materials” supported by the Danish Council for Independent Research. Measurements are performed on fully automated M4PP systems, and you will take part in developing these new metrology methods to extract material properties with high precision, accuracy and spatial resolution.<br /><br />You will work in collaboration with our team to develop data acquisition strategies, structuring measurement data and extracting material properties in order to achieve high measurement precision (reproducibility/repeatability). You will be responsible for removing systematic measurement artifacts, by implementing correction algorithms to our data treatment scripts (Matlab). And finally, you will search for systematic signatures of nanoscale thermoelectric transport phenomena.<br /><br /><strong>Qualifications</strong><br />You should have a two-year master's degree in engineering/physics (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master's degree.<br /><br />We strive towards performing exceptionally precise and accurate measurements. For this PhD position, we seek an independent experimentalist with a systematic approach in solving problems. You are a perfectionist who enjoys trouble shooting until the final digit is correct.<br /><br />Experience in one or more of the following will be an advantage:<br /> <ul><li>Matlab programming</li><li>Electrical measurement methods</li><li>Lock-in technique</li><li>Microfabrication</li><li>Thermoelectric effects</li><li>Semiconductor device physics</li><li>COMSOL Multiphysics or similar finite element method software</li></ul><br /><strong>Approval and Enrolment</strong><br />The scholarship for the PhD degree is subject to academic approval, and the candidate will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see the <a href="" target="_blank">DTU PhD Guide</a>.<br /><br /><strong>Assessment</strong><br />The assessment of the applicants will be made by Head of Section, Professor Nini Pryds and Senior Researcher Dirch Hjorth Petersen.<br /><br /><strong>We offer</strong><br />DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.<br /><br /><strong>Salary and appointment terms</strong><br />The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 3 years.<br /><br />You can read more about <strong><a href="" target="_blank">career paths at DTU here</a>.</strong><br /><br /><strong>Further information </strong><br />Further information may be obtained from Senior Researcher Dirch Hjorth Petersen, <a href="" target="_blank"> </a> .<br /><br />You can read more about DTU Energy at <a href="" target="_blank">"></a> .<br /><br /><strong>Application</strong><br />Please submit your online application no later than <strong>9 August 2020 (23:59 local time)</strong>. Apply at <a href="" target="_blank"><br"></a><br /><br />Applications must be submitted as <strong>one PDF file</strong> containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach <strong>all your materials in English in one PDF file</strong>. The file must include:<br /> <ul><li>A letter motivating the application (cover letter)</li><li>Curriculum vitae</li><li>Grade transcripts and BSc/MSc diploma</li><li>Excel sheet with translation of grades to the Danish grading system (see guidelines and <a href="" target="_blank">Excel spreadsheet here</a>)</li></ul><br />Candidates may apply prior to ob­tai­ning their master's degree but cannot begin before having received it.<br /><br />Applications and enclosures received after the deadline will not be considered.<br /><br />All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.<br /><br /><strong><em>DTU Energy</em></strong><br /><em>The Department of Energy Conversion and Storage is focusing on functional materials and their application in sustainable energy technology. Our research areas include fuel cells, electrolysis, polymer solar cells, magnetic refrigeration, superconductivity, thermoelectrics, sustainable synthetic fuels, and batteries. The Department, which has more than 200 employees, was founded in 2012. Additional information about the department can be found on <a href="" target="_blank"><br"></a></em><br /><br /><strong><em>Technology for people</em></strong><br /><em>DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN’s 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear vision to develop and create value using science and engineering to benefit society. That vision lives on today. DTU has 11,500 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. Our main campus is in Kgs. Lyngby north of Copenhagen and we have campuses in Roskilde and Ballerup and in Sisimiut in Greenland.</em>

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