US Ticker: QTMM



Conn. C.; Barron, A.Microparticle Characterization via Confocal Microscopy,
Connexions Web Site., Jun, 7 2010.

View Article Online
Download Article

Gullapalli, S.; Barron, A.Optical Characterization of Group 12-16 (II-VI) Semiconductor Nanoparticles by Flourescense Spectroscopy,
Connexions Web Site., Jun, 26 2010.

View Article Online
Download Article

Gullapalli, S.; Barron, A.Characterization of Group 12-16 (II-VI) Semiconductor Nanoparticles by UV-Visible Spectroscopy,
Connexions Web Site., Jun, 12 2010.

View Article Online
Download Article

Gullapalli, S.; Barron, A.Optical Properties of Group 12-16 (II-VI) Semiconductor Nanoparticles,
Connexions Web Site., Jun, 9 2010.

View Article Online
Download Article


Stephen Squires,"Quantum Dots: Future Energy Solution"
Originally Published in INTERPV Magazine October 2009 Issue.

If we are going to solve the global warming issue, we will need to start believing quantum dot solar technology
is the only viable solution to the world's future energy needs.

View Article Online
Download Article

R.A. Glass,"Sustainable and cost effective solar technology made from Tetrapod Quantum Dot Solar Cells"
NSTI Nanotech 2010 Vol. 3, Nanotechnology 2010: Bio Sensors, Instruments, Medical, Environment and Energy,
Chapter 10: Photovoltaics, Solar, Lighting & Displays p. 729-731

Solterra is developing 3rd generation solar cells utilizing high volume synthesis of tetrapod quantum dots.

View Article Online

Ghassan Jabbour and David Doderer,"The Best of Both Worlds"

Quantum-dot-based solar cells promise to deliver efficiencies approaching those of crystalline solar cells but
with the manufacturing simplicity of organics.

Download Article

Sravina Gullapalli and Michael S. Wong, Rice University, Nanotechnology:A Guide to Nano-Objects Document: 051128_public.pdf,
Chemical Engineering Progress (CEP) May 2011, p. 28-32,

Rapid Change in the field of nanotechnology can make it hard to keep track of the latest nanomaterial developments.
Here's a primer on the most common shapes, sizes and compositions of nano-objects.

View Article Online


Dr. Michael Wong heads up the Catalyst and Nanomaterials Laboratory at Rice University.
The technology has been proven and published in a variety of peer reviewed journals.

W.Y.L. Ko, H.G. Bagaria, S. Asokan, K.-J. Lin and M.S. Wong,"CdSe Tetrapod Synthesis Using Cetyltrimethylammonium
Bromide and Heat Transfer Fluids,"
J. Mater. Chem.20(12), 2474-2478 (2010) DOI:10.1039/b922145j

Abstract: The synthesis of CdSe tetrapod-shaped quantum dots using phenyl-based heat transfer fluids as inexpensive alternatives
to octadecene solvent was studied. The CdSe tetrapods were synthesized using the hot-injection method, in which the trioctylphosphine
selenide precursor and the shape-inducing cetyltrimethylammonium bromide surfactant were injected into a cadmium oleate-containing
solvent at 190 degrees celcius. At a synthesis temperature of 160 degrees celcius, the resulting quantum dot particles were found to grow
more slowly in heat transfer fluids and pure phenyl-type solvents than in octadecene. With synthesis time, the selectivity to tetrapods
increased, and the arms grew proportionally in width and length. The use of heat transfer fluids provides a convenient means to control
growth of shaped nanoparticles.

Subashini Asokan, Karl M. Krueger, Vicki L. Colvin, and Michael S. Wong,"Shape Controlled Synthesis of CdSe Tetrapods Using Cationic
Surfactant Ligands"
Small 2007, 3, No. 7, 1164-1169

Abstract: Keeping in shape: Quaternary alkylammonium compounds promote the formation of faceted quantum dots.
Their use in hot-injection synthesis chemistry provides a new means to uniform CdSe tetrapods without a selective precipitation step
(See picture; TOPSe: trioctylphosphine selenide), and introduces the prospect of nanoparticles shape control through ligand-nanoparticle
charge interactions.