Fellows

Jimin Kwag

Jimin Kwag is a PhD candidate in chemical engineering whose research is focused on the self- assembly of colloidal semiconductor nanocrystals (NCs). As a MathWorks Fellow, Jimin will explore the fundamental principles of self-assembly in lead sulfide (PbS) NCs, which exhibit appealing properties such as a direct optical band gap, multiple exciton generation, and infrared absorption. By manipulating the NC size, core shape, and organic ligand chemistry, it is possible to tune their chemical, optical, and electronic properties. Jimin is particularly interested in the role of organic ligands in the self-assembly process of PbS NCs and in elucidating the structure of the organic ligand shell. To that end, she is applying neutron and x-ray scattering to characterize the structure of inorganic NC cores and small-angle neutron scattering to characterize the role of the organic ligand shell. MATLAB plays a pivotal role in processing and interpreting her experimental results. Jimin’s research is shedding new light on NC self-assembly and paving the way for new applications in photovoltaics and optoelectronics in a variety of fields, including imaging, solar energy harvesting, displays, and communications.

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