Cherie R Kagan Research Group

Electrical and Systems Engineering - Chemistry - Materials Science and Engineering

Group Photo 2014


The Kagan group explores the chemical and physical properties of nanostructured and organic materials and integrates these materials in electronic, optoelectronic, optical, thermoelectric and bioelectronic devices. We combine the flexibility of chemistry and bottom-up assembly with top-down fabrication techniques to design novel materials and devices. We explore the structure and function of these materials and devices using spatially- and temporally-resolved optical spectroscopies, AC and DC electrical techniques, electrochemistry, scanning probe and electron microscopies and analytical measurements.

Research Highlights

Deposition of Wafer-Scale Single-Component and Binary Nanocrystal Superlattice Thin Films Via Dip-Coating

Our DOE SISGR team demonstrates large-area assembly of single component and binary nanocrystal superlattices over large wafer scales by dip-coating.

Smectic Nanorod Superlattices Assembled on Liquid Subphases: Structure, Orientation, Defects, and Optical Polarization

Our DOE SISGR team demonstrates control over the orientation of smetic B superlattices of CdSe/CdS dot-in-rod nanocrystals by assembly on different polar liquid subphases to yield nearly quantitative vertical to horizontal alignment. We show the optical absorption polarization depends on the structure of the assembled superlattices.

Electron and hole transport in ambipolar, thin film pentacene transistors

We fabricated solution-processed, ambipolar, thin-film pentacene field-effect transistors to study both electron and hole transport simultaneously in a single, organic solid-state device. We show that the lower electron than hole mobility is consistent with greater energetic disorder and therefore a greater density of localized tail states for electrons than holes.


Congratulations to Yuming!

Congratulations to Yuming on his PhD graduation and wishing him the best in Michigan, at the Dow Chemical Company!

Welcome Lizzie and Pil Sung

Welcome to Pil sung, our new post-doc, and Lizzie Dresselhaus, our new undergrad!

Congratulations to SJ!

Congratulations to SJ on his PhD graduation and wishing him the best during his postdoc in the Rogers group. Also a congratulations to SJ for winning the SJ Stein Prize from the University of Pennsylvania, recognizing his PhD work for its "superior achievement in the field of new or unique materials or applications for materials in electronics," and the MRS Graduate Student Silver Award at the Spring, 2014 meeting.

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