ABSTRACT

Low-dimensional metal halide perovskite semiconductors have received considerable attention due to their low-temperature processability, defect tolerance and strong quantum confinement; these attributes have led to applications in light emitting diodes (LEDs), solar cells, photodetectors, lasers, photocatalysis and optical modulators. Among them, two-dimensional (2D) layered perovskites, in terms of Ruddlesden–Popper and Dion–Jacobson, have receivedincredible attention because of their stability and sustainability compared to their three-dimensional (3D) counterparts. Despite their great success in chemical synthesis, the thickness of the perovskite layers and ligand-free environment are desirable for optoelectronic applications and cannot be controlled through chemically grown structures. By mimicking the 2D multiple-quantum-well (QW) structure and using the thermal evaporation method, we could address the abovementioned limitations. Our work is devoted to engineering and constructing novel CsPbBr3perovskite-based artificial multiple quantum wells (MQWs) and controlling the thickness of the thin films. As a result; our facile approach and well-controlled study in perovskite-based MQWs facilitates future device applications with enhanced performance.

Mark Your Calendar: 

November 6th | 4:00 pm |Building 4, room 5220

Please support Ph.D. candidate Noor Merdad’s final defense supervised by Prof. Omar F. Mohammed.