Study of microcavity effects for novel perovskite optoelectronics
August 2019
In 2010s, metal halide perovskites have emerged as the rising star in the field of photovoltaics (PVs). Their rapid increase in solar cell efficiencies has attracted great attention for various types of perovskite-based optoelectronics, including light-emitting diodes (LEDs), lasers, and photodetectors. However, the outstanding semiconductor properties of perovskite are not yet fully utilized in those fields, leaving a lot of room for further development.
Optical microcavities are resonant structures with reflecting faces and a strengthened optical field inbetween them. Optimization of the resonance allows tuning of the optical characteristics of the system that is put into the cavity. This approach is exceptionally powerful when combined with delicate optical design and optically tunable semiconductors such as perovskites.
In this master thesis we aim to study such microresonating optical structures and apply them to novel thermally evaporated perovskite optoelectronics. First studies will concentrate on analysis of simple thin-films within a pair of dielectric mirrors – so-called distributed Bragg reflectors. The studied system will then be gradually adapted to form a narrow-band photodetector. The candidate will perform device simulation, design, optimization and characterization under the supervision of senior members. The Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) provides state-of-the-art infrastructures along with the interdisciplinary research network and deep know-hows of >30 years in the field of novel semiconductor optoelectronics.
contact:
© Kai Schmidt/IAP
Dr. Frederik Nehm
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