Calendar of Events - Event

Event Scheduled for Jun 27, 2014

Event: Nano Energy Seminar: Engineering Hybrid Polymeric Interfaces for Energy Harnessing and Storage - Dr. B. Reeja Jayan, MIT

Location: Biology/Physics Building, room 130

Time: 02:00 pm

Details of Event:
please join us on
Friday, June 27, 2014 2:00-3:00 p.m. Biology/Physics Building Room 130

Nano Energy Seminar:
Engineering Hybrid Polymeric Interfaces for Energy Harnessing and Storage

Dr. B. Reeja Jayan
Department of Chemical Engineering
Massachusetts Institute of Technology, Cambridge, MA 02139

Abstract:
Hybrid materials comprising of soft-hard matter interfaces between polymer thin films and inorganic surfaces are becoming increasingly important for energy harnessing and storage applications like solar cells and batteries. The properties of such devices critically depend on the physical and chemical design of these interfaces. For example, devices incorporating nanostructured surfaces like high aspect ratio nanorod-based arrays require the synthesis of polymer films that can cover complex geometries while retaining the underlying morphology of these structures, i.e. conformal coverage. It is also important to reliably control the polymer film thickness from the nanoscale to macroscale dimensions. In addition, covalently grafting the polymer film onto the inorganic substrate during the synthesis process can help satisfy dangling bonds and passivate electrically active interface traps present on the substrate surface. Such uniform, conformal and covalently grafted polymer films are difficult to achieve by solution processing due to de-wetting and surface tensions effects. This talk will present the synthesis of polymer films designed using initiated chemical vapor deposition (iCVD); a process which facilitates simultaneous polymerization and thin film growth on a substrate placed at room temperature. The uniformity, precise control and environmental stability offered by the iCVD technique enables engineering of extraordinary interfaces between polymer thin films and novel inorganic surfaces. This talk will discuss two specific examples for integration of iCVD grown polymer films into energy-related applications: (1) iCVD polymer-based surface passivation of silicon for design of hybrid polymer silicon solar cells (2) iCVD designed ultra-thin, conformal solid polymer electrolytes for three-dimensional battery architectures. Finally, examples to show that the solvent-free iCVD approach is scalable and easily integrated with other techniques, such as roll-to-roll processing will be presented.

Biography:
B. Reeja Jayan is a Postdoctoral Associate in Chemical Engineering at the Massachusetts Institute of Technology, working under the supervision of Professor Karen Gleason. She received her M.S. in Electrical Engineering in 2008 and Ph.D. in Materials Science and Engineering in 2012 from the University of Texas at Austin. She is a co-founder of the MIT Think Tank, an organization geared towards inter-disciplinary problem solving. Her research work investigates the hybrid interface formed between thin films of organic (polymers, small molecules) and inorganic (metals, semiconductors, insulators) materials for applications in energy and sustainability. profile

For additional information, please contact Prof. Michael Pettes at (860) 486-2855 or here

Sponsored By: Mechanical Engineering

Pamphlet/Flyer: View file here

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