Vacuum-processed perovskite light-emitting diodes
August 2019
Certain materials in the group of the so-called perovskites are currently attracting a lot of attention among researchers in the field of optoelectronics due to their outstanding optoelectric properties arising from a direct bandgap. In just 10 years since the first demonstration the power conversion efficiency of perovskite solar cells (PSCs) has already exceeded 24% almost reaching lab records of monocrystalline silicon solar cells, a technology looking back on over 60 years of continuous research.
Alongside the success in solar cells, perovskite light-emitting diodes (PeLEDs) show immense potential for competitive lighting and display technologies. PeLEDs have shown dramatic growth in their external quantum efficiencies (EQEs) from 0.1% (in 2014) to 21.6% (in 2018). This is comparable to organic LEDs, which are now widely used in smart phone displays and even TVs (AMOLED). While recent advances in PeLEDs are mostly achieved using solution processing, the use of thermal evaporation in vacuum is anticipated to accelerate their commercialization by enabling industrial mass production.
We are looking for Masters candidates who are interested in the challenge of vacuum processed PeLEDs and investigation of their luminescence characteristics. The student will work on this fascinating and quickly developing junction of optics, semiconductor physics, and material science. Device simulation, design, processing, characterization, and optimization will be carried out under the supervision of senior coworkers.
The IAPP is one of the world-leading research centers in the field of optoelectronics, in particular for the vacuum process. The IAPP provides an outstanding research environment along with the cutting-edge facilities and cooperative atmosphere with more than one hundred scientists.
contact:
© Kai Schmidt/IAP
Dr. Frederik Nehm
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