Faculty

Silvija Gradečak

 

Disciplines

Research

Prof. Gradečak's research focuses on nano-photonics and electronics and is based on the synthesis, characterization and integration of low-dimensional systems. By taking the advantage of unique material properties on a nanoscale, she explores novel optoelectronic applications such as nanoscale light-emitting sources, single photon sources, or nanowire lasers.

Understanding the properties of such nanosystems requires multidisciplinary approach and new instrumental tools. Prof. Gradečak uses rational synthesis of free-standing nanoscale objects like nanocrystals, nanotubes, and nanowires and combine spectroscopic techniques, transport measurements and advanced electron microscopy techniques to directly correlate structural and physical properties on the nanometer scale. Experimental techniques and methodologies that are being developed as a part of her research endeavor are generally applicable to any material system where interplay between nanostructure, properties, and performance becomes significant.

Selected Publications

S. Ren, L.-Y. Chang, S. K. Lim, J. Zhao, M. Smith, N. Zhao, V. Bulović, M. Bawendi, S. Gradečak, "Inorganic-organic hybrid solar cell: bridging quantum dots to conjugated polymer nanowires", Nano Letters ASAP.

M. Brewster, X. Zhou, S. K. Lim, and S. Gradečak, "The Role of Au in the Growth and Nanoscale Optical Properties of ZnO Nanowires”, Journal of Physical Chemistry Letters, 2, 586-591 (2011).

S. Ren, N. Zhao, S. Crawford, M. Tambe, V. Bulović, and S. Gradečak, "Heterojunction photovoltaics using GaAs nanowires and conjugated polymers", Nano Letters, 11, 408-413 (2011).

M. Tambe, S. Ren, and S. Gradečak, "Effects of gold diffusion on n-type doping of GaAs nanowires", Nano Letters 10, 4584-4589 (2010).

S. K. Lim, M. Brewster, F. Qian, Y. Li, C. M. Lieber, and S. Gradečak, "Direct correlation between structural and optical properties of III-V nitride nanowire heterostructures with nanoscale resolution", Nano Letters 9, 3940-3944, 2009.

S. K. Lim, M. Tambe, M. Brewster, S. Gradečak, "Controlled growth of ternary alloy nanowires using metalorganic chemical vapor deposition", Nano Letters 8, 1386-1392 (2008).

Related News

New observations of semiconductor properties
A significant controversy surrounds the reason for the high-intensity light output from a leading LED semiconductor material, indium gallium nitride (InGaN): Researchers have been split on whether
May 24, 2013
Nanowires and Nanotubes
Professor Silvija Gradečak and her colleagues are finding new uses for nanubes and nanowires, including use in energy, ele
April 11, 2013
Solar-cell design using nano wires
Professor Silvija Gradečak is part of a team of MIT researchers who are working to improve efficiency of quantum-dot photovoltaic system by adding a forest of nanowires.
March 25, 2013
Flexible, light solar cells could provide new opportunities
MIT researchers have produced a new kind of photovoltaic cell based on sheets of flexible graphene coated with a layer of nanowires.
December 21, 2012
Nano Letters Lecture, Aug. 20
During the ACS Fall 2012 National Meeting, the inaugural Nano Letters Young Investigator Lecture will be given by lectureship winner, Professor Silvija Gradecak.
August 17, 2012
Faculty Updates
Please join us in welcoming Professor Antoine Allanore and Professor Niels Holten-And
June 29, 2012
Professor Gradecak receives Nano Letters award
Professor Silvija Gradecak has been named the 2012 recipient of the Nano Letters Young Investigator Lecturesh
May 4, 2012
A new twist on nanowires
Professor Silvija Gradečak and her team have found a way to control the width and composition of nanowires.
February 22, 2012
New method of growing semiconductor nanowires demonstrated
Prof.
April 22, 2010

Related Events

MLB with Faculty Speakers
Friday, October 7, 2011 - 5:00pm to 6:00pm

Mini-talks by the following DMSE professors:
* Prof. Silvija Gradecak - "Nanomaterials for energy applications"