Cherie Kagan

About

Cherie Kagan is the Stephen J. Angello Professor and holds professorships in Electrical and Systems Engineering as well as Materials Science and Engineering at the University of Pennsylvania. Her primary focus area is Materials Chemistry. She can be contacted via email at kagan@seas.upenn.edu and is located in Room 230 of the VLEST Building. The information provided highlights her interdisciplinary roles bridging engineering and materials science, emphasizing her expertise in materials chemistry.

Research topics

• Physics
• Materials science
• Nanotechnology
• Chemistry
• Chemical physics
• Optoelectronics
• Condensed matter physics
• Inorganic chemistry
• Crystallography
• Computational chemistry

Selected publications

• Colloidal Quantum Dots as Platforms for Quantum Information Science

  Chemical Reviews · 2020 · 326 citations

  1st authorCorresponding

  Colloidal quantum dots (QDs) are nanoscale semiconductor crystals with surface ligands that enable their dispersion in solvents. Quantum confinement effects facilitate wave function engineering to sculpt the spatial distribution of charge and spin states and thus the energy and dynamics of QD optical transitions. Colloidal QDs can be integrated in devices using solution-based assembly methods to position single QDs and to create ordered QD arrays. Here, we describe the synthesis, assembly, and p…

  DOI

• Tailoring Hot Exciton Dynamics in 2D Hybrid Perovskites through Cation Modification

  ACS Nano · 2020 · 65 citations

  Senior authorCorresponding

  We report a family of two-dimensional hybrid perovskites (2DHPs) based on phenethylammonium lead iodide ((PEA)2PbI4) that show complex structure in their low-temperature excitonic absorption and photoluminescence (PL) spectra as well as hot exciton PL. We replace the 2-position (ortho) H on the phenyl group of the PEA cation with F, Cl, or Br to systematically increase the cation’s cross-sectional area and mass and study changes in the excitonic structure. These single atom substitutions substan…

  DOI

• Photophysics of Two-Dimensional Semiconducting Organic–Inorganic Metal-Halide Perovskites

  Annual Review of Physical Chemistry · 2022 · 42 citations

  Senior authorCorresponding

  Two-dimensional organic-inorganic hybrid perovskites (2DHPs) consist of alternating anionic metal-halide and cationic organic layers. They have widely tunable structural and optical properties. We review the role of the organic cation in defining the structural and optical properties of 2DHPs through the example of lead iodide 2DHPs. Even though excitons reside in the metal-halide layers, the organic and inorganic frameworks cannot be separated-they must be considered as a single unit to fully u…

  DOI

• Gate-tunable optical anisotropy in wafer-scale, aligned carbon nanotube films

  Nature Photonics · 2024-08-14 · 16 citations

  article
  PublisherDOI

• Dynamic Nanocrystal Superlattices with Thermally Triggerable Lubricating Ligands

  Journal of the American Chemical Society · 2024-01-31 · 13 citations

  articleOpen access

  The size-dependent and collective physical properties of nanocrystals (NCs) and their self-assembled superlattices (SLs) enable the study of mesoscale phenomena and the design of metamaterials for a broad range of applications. However, the limited mobility of NC building blocks in dried NCSLs often hampers the potential for employing postdeposition methods to produce high-quality NCSLs. In this study, we present tailored promesogenic ligands that exhibit a lubricating property akin to thermotro…

  PublisherOA PDFDOI

Recent grants

• NSF Engineering Research Center for the Internet of Things for Precision Agriculture (IoT4Ag)

  NSF · $31.5M · 2020–2026

• Designing the Electronic Properties of PbSe Nanowires for Optoelectronic Devices

  NSF · $375k · 2013–2017

• Engineering Organic-Inorganic Hybrid Materials for the Conversion of Solar Energy

  NSF · $300k · 2009–2013

Frequent coauthors

• Christopher B. Murray

  University of Pennsylvania

  112 shared

• Stephen J. Angello

  A.S. Watson (Netherlands)

  81 shared

• Timothy Watson

  Tan Tock Seng Hospital

  81 shared

• Claudia Felser

  Harvard University Press

  81 shared

• Carolyn Duran

  Johns Hopkins University

  81 shared

• Todd Osman

  A.S. Watson (Netherlands)

  81 shared

• Kammrath Weiss

  81 shared

• O January

  National Student Clearinghouse Research Center

  81 shared

Education

• Ph.D., Electrical Engineering

  University of Pennsylvania

  1995

• M.S., Electrical Engineering

  University of Pennsylvania

  1991

• B.S., Electrical Engineering

  University of Pennsylvania

  1989

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