Scientist, Center for Integrated Nanotechnologies
Science Thrust: Nanophotonics and Optical Nanomaterials
MPA-CINT, MS J567
Los Alamos National Laboratory
Los Alamos, NM 87545
Education and Training
Undergraduate: Grinnell College, B.A., Chemistry, 1992
Graduate: Washington University in St. Louis, Ph.D., Materials Inorganic Chemistry, 1999
Jen's research focuses on the development of new synthetic approaches to novel functional optical nanomaterials from semiconductor quantum dots to nanowires to hybrid composite nanomaterials. Her lab explores nanoscale heterostructuring as a means to enhance fundamental photophysical properties or to completely evolve new, emergent or multifunctional behaviors. She aims to establish design principles that guide synthetic and materials choices toward optimized and novel properties. She actively pursues innovative synthetic methods that build upon traditional colloidal and inorganic materials chemistry but incorporate automation, in situ characterizations, and microfluidics platforms. For example, a new automated synthesis reactor will allow quasi-combinatorial synthesis of complex quantum dots, with round-the-clock operation and real-time characterizations, while her custom microfluidics capabilities have afforded a novel solution-growth method for synthesizing semiconductor nanowires and their superlattices based on "flow" solution-liquid-solid growth. In addition to directly "constructing" nanoscale interfaces into nanocrystals through synthesis toward enhanced or new properties (e.g., "thick" semiconductor shells to eliminate blinking, electronic structure manipulation for functional bandgap engineering, plasmonic-semiconductor interactions, or magnetic-semiconductor multifunctionality), she utilizes and advances approaches for post-synthesis assembly of nanocrystals to realize mesoscale interfacial interactions and collective behavior (e.g., dip-pen nanolithography, bio/polymer-templating). She collaborates extensively with spectroscopists and theorists to fully understand correlations between composition, structure and function that further inform our materials development efforts. Jen also "applies" her novel nanomaterials, providing proof-of-principle demonstrations of their unique utility for applications from biology to energy.
- Hollingsworth, J. A. Heterostructuring Nanocrystal Quantum Dots Toward Intentional Suppression of Blinking and Auger Recombination. Chem. Mater. 2013, 25,1318-1331.
- Dennis, A. M.; Mangum, B.; Piryatinski, A.; Park, Y.-S.; Hannah, D.; Casson, J.; Williams, D.; Schaller, R.; Htoon, H.; Hollingsworth, J. A. Suppressed Blinking and Auger Recombination in Near-Infrared Type-II InP/CdS Nanocrystal Quantum Dots. Nano Lett. 2012 12, 5545-5551.
- Ghosh, Y.; Mangum, B.D.; Casson, J. L.; Williams, D. J.; Htoon, H.; Hollingsworth, J. A. New Insights into the Complexities of Shell Growth and the Strong Influence of Particle Volume in Non-Blinking “Giant” Core/Shell Nanocrystal Quantum Dots. J. Am. Chem. Soc. 2012, 134, 9634–9643.
- Kundu, J.; Ghosh, Y.; Dennis, A. M.; Htoon, H.; Hollingsworth, J. A. Giant Nanocrystal Quantum Dots: Stable Down-Conversion Phosphors that Exploit a Large Stokes Shift and Efficient Shell-to-Core Energy Relaxation. Nano Lett., 2012, 12, 3031-3037.
- Achermann, M.; Jeong, S.; Balet, L.; Montano, G.A.; Hollingsworth, J.A. Efficient Quantum Dot-Quantum Dot and Quantum Dot-Dye Energy Transfer in Biotemplated Assemblies. ACS Nano 2011, 5, 1761-68.
- Wooten, A.; Werder, D.; Williams, D.; Casson, J.; Hollingsworth, J. A. Solution-Liquid-Solid Growth of Ternary Cu-In-Se Semiconductor Nanowires from Multiple- and Single-Source Precursors. J. Am. Chem. Soc. 2009, 131, 16177-16188.
- Chen, Y.; Vela, J.; Htoon, H.; Casson, J. L.; Werder, D. J.; Bussian, D. A.; Klimov, V. I., and Hollingsworth, J. A., “Giant” multishell CdSe nanocrystal quantum dots with suppressed blinking. J. Am. Chem. Soc. 2008, 130, 5026-5027.
- Pietryga, J. M.; Werder, D. J.; Williams, D. J.; Casson, J. L.; Schaller, R. D.; Klimov, V. I., and Hollingsworth, J. A. Utilizing the lability of lead selenide to produce heterostructured nanocrystals with bright, stable infrared emission. J. Am. Chem. Soc. 2008, 130, 4879-4885.