2 PhD positions in Quantum Dots for Advanced Lighting Applications
In the context of a recently awarded NWO-TTW Open Technology Program grant “Quantum Dots for Advanced Lighting Applications” 2 PhD positions and a …
- Lorentzweg, Delft, Zuid-Holland
- Tijdelijk contract / Tijdelijke opdracht
- Uren per week:
- 38 - 38 uur
- € 2325 - € 2972 per maand
In the context of a recently awarded NWO-TTW Open Technology Program grant “Quantum Dots for Advanced Lighting Applications” 2 PhD positions and a 30 months postdoctoral position are available at Delft University of Technology to work on the synthesis, structural characterization and advances spectroscopy of next generation, non-toxic quantum dots for advanced high intensity lighting applications. This project is a collaboration with multinational Lighting company Lumileds, as well as Utrecht University, Antwerp University and IIT Genova.
LEDs contain phosphors that convert blue light into green and red. Current phosphors however emit partially in the infrared, which cannot be observed by the human eye. Replacing these phosphors with colloidal quantum dots (QDs) can significantly boost the overall efficiency and produce superior color quality. Unfortunately, common QD phosphors do not perform well under high-intensity light excitation required for e.g. automotive or projector applications. In these high-intensity regimes Auger recombination and charging reduce the QD photoluminescence efficiency. Furthermore, current state-of the-art QDs contain toxic cadmium, which is undesirable in consumer products and banned by the European ROHS directive. The aim of this proposal is to develop next generation, non-toxic quantum dots for advanced high intensity lighting applications.
PhD position 1:
You will develop next generation quantum dots of non-toxic materials. The focus is on colloidal synthesis, although other synthesis routes will also be explored. A background in working with colloidal materials, knowledge of inorganic and physical chemistry is required. Knowledge of coordination chemistry, optical spectroscopy and structural characterization techniques (TEM, XPS, XRD) will be considered favourable. A master degree in chemistry or materials science is required.
PhD position 2:
You will use advanced spectroscopy to characterize next generation quantum dot materials. These spectroscopies include fs transient absorption, streak camera measurements, single particle fluorescence measurements, combined with spectroelectrochemistry. A thorough knowledge of optics, spectroscopy and solid state physics is required. Knowledge of electrochemistry and quantum dots will be considered favourable. A master degree in physical chemistry or physics is required.
A Master of Science degree in chemistry, physics or materials science.
TU Delft offers a customisable compensation package, a discount for health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged. An International Children’s Centre offers childcare and an international primary school. Dual Career Services offers support to accompanying partners. Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities.
As a PhD candidate you will be enrolled in the TU Delft Graduate School. TU Delft Graduate School provides an inspiring research environment; an excellent team of supervisors, academic staff and a mentor; and a Doctoral Education Programme aimed at developing your transferable, discipline-related and research skills. Please visit www.tudelft.nl/phd for more information.
For more information about this vacancy, you can contact Dr. A.J. Houtepen, Associate Professor, e-mail: A.J.Houtepen@tudelft.nl, tel. +31 (0)15 2782157.
More information can be found on: www.tudelft.nl/cheme/houtepengroup