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Dye solar cell

Press reports: Clean Energy News
Press reports: Clean Energy News

The Sun May Shine Down on Nano-Solar Sooner Than Expected

Monday, March 20, 2006

The promise of nano-solar technology?the application of nanotechnology to the
development of solar cells?has received a lot of attention over the last year. By
manipulating matter at the scale of a billionth of a metre, scientists believe they
can significantly improve the efficiency of solar cells, on the order of a threefold
increase in the electric conversion rate over the next decade.

There are a number of nanotechnologies demonstrating real efficiency gains and
costs savings in photovoltaic applications, including carbon nanotubes, quantum dots
and dye-sensitized solar cells. Dye solar cells (DSC), however, seem to be breaking
out of the pack.

Dyesol, listed down under on the Australian Stock Exchange as DYE, is up 300 percent in
2006 and climbed 1,000 percent in February. This week, Konarka, which licenses DSC
technology in North America, received $20 million in a private equity investment, raising its
capital fundraising efforts to $60 million. In Japan, auto parts maker Aisin Seiki is producing
dye sensitized solar batteries. Major semiconductor manufacturer STMicroelectronics
announced its intention to ramp up its commitment to a dye solar cell product line.

Dye solar cells are essentially nano-engineered photosynthesis--a nanocrystalline layer of
titanium dioxide absorbs photosensitive dye to generate a voltage?that can produce electricity
even when the shine is not shining. The technology is demonstrating efficiencies of 10
percent, higher than other thin film solar cells, and can be produced at a much lower
cost than silicon solar cells.

Yet amidst all the buzz around solar IPOs last year, the first solar nanotech IPO in
August failed to rise above the din. Following an international conference last month,
however, international investors started to scoop up shares of Dyesol. Certainly, the solar
hype helped. But the real attraction was the appointment of Michael Graetzel?the inventor
of dye solar cells?to chairman of Dyesol?s Technology Advisory Board. DSC production is
quickly establishing a global footprint.
Posted by Kuppuswamy Kalyanasundaram at 9:52
Phone and USB solar cell charger
Phone and USB solar cell charger

If you ever wanted an easy way to charge your mobile phone or any other device which
can be charged via USB such as many MP3 players or iPods this gadget could be for you.
The Scotty Phone and USB Solar Charger is a small and compact solar
panel which you can easily plug your gadgets into to charge them even when you?re miles
away from civilization.

The pocket-sized panel efficiently gathers in the sun?s energy and stores it in two
rechargeable AA batteries so even if it?s a cloudy day you could still use the power from
other days. This also lets you power any device with AA batteries even if they aren?t
usually powered by them as you can simply plug in two regular alkaline batteries in
place of the rechargeable ones.

Included are cables for charging most kinds of mobile phones so you don?t have to buy
any separate attachments. You even get USB charging cables which fit into devices like i
Pods or many digital cameras.

The panel has a charging LED which lets you know when it is fully charged. Seven hours
of sunlight can fully charge the batteries with one hour of sunlight equating to about
10 minutes of talking time or 5 hours of standby time!

If you want an easy and compact way to start getting the most out of sunlight and
powering your portable gadgets, the Scotty Phone and USB Solar Charger would be
perfect for you! You can get yours for £40.00 from Select Solar.

Posted by Kuppuswamy Kalyanasundaram at 9:47
Conference: Energy Nano06
ASME Energy Nanotechnology International Conference (Energy Nano06)
June 26-28,2006 , MIT, Cambridge, USA

Plenary Speakers

-- Mildred Dresselhaus, MIT
"Addressing Grand Energy Challenges Through Advanced Materials"

--Michael Graetzel, Ecole Polytechnique de Lausanne
"The Advent of Mesoscopic Solar Cells"

--Charles Lieber, Harvard University

Keynote Speakers
-- Tom Autrey, Pacific Northwest National Laboratory
"Nanotechnology Approaches to Hydrogen Storage"

Brent Fultz, California Institute of Technology
"Nanostructured Materials for Lithium and Hydrogen Storage"

Arthur J. Nozik, University of Colorado, Boulder
"Carrier Dynamics and Multiple Exciton Generation in Semiconductor
Nanocrystals: Relevance to Third Generation Solar Photon Conversion"

Ken Okazaki, Tokyo Institute of Technology
"Hydrogen-Based Advanced Energy Systems and Related Nano-Energy Researches"

Joel Schindall, MIT
"Nanotechnology-Enabled Energy Conversion and Storage"
Posted by Kuppuswamy Kalyanasundaram at 9:41
DSSC development at Konarka
Renewable Capital to License Konarka?s Dye-Sensitized Solar Cell Technology

July 31, 2006 ? Konarka Technologies, Inc., an innovator in developing and commercializing
Power Plastic? that converts light to energy, and Renewable Capital Ltd, an investment
firm that identifies and invests in renewable technologies, today announced the licensing
and joint development of Konarka?s dye-sensitized solar cell technology for large-scale production.
The agreement will further the commercialization of Konarka?s dye cell technology
by bringing on large-scale production capabilities.

source: Konarka News & Events
Posted by Kuppuswamy Kalyanasundaram at 9:34
TiO2 nanowire based DSSC
Preparation and Microstructure of TiO2-Nanowire Dispersed Composite
Electrode for Dye-Sensitized Solar Cells

Yoshikazu Suzuki (Institute of Advanced Energy, Kyoto University)
(author of over 50 articles and the book "Fine Ceramics Technical Strategy: from
the viewpoint of MOT")

"Several types of TiO2 nanowires (TiO2 (B) or anatase phases) have been
prepared by hydrothermal processes followed by post-heat treatments in air.
TiO2-nanowire dispersed TiO2 nanoparticle matrix porous composite
(TiO2 NP/TiO2 NW) electrodes were prepared for dye-sensitized solar cells (DSC)
in order to improve light-to-electricity conversion efficiency. Effect of one-dimensional
nanostructure (electron expressway concept) are discussed in detail."
Posted by Kuppuswamy Kalyanasundaram at 9:27
Conference presentations
Advanced Solar Energy Solutions for the Warfighter Workshop
May 18-19, 2006 /Majestic Beach Resort /Panama City Beach, Florida

Friday, May 19, 2006

Photovoltaic Technologies Session Day 2

Dye Sensitized Solar Cells
Dr. Michael Graetzel - Ecole Polytechnique Federale de Lausanne (EPFL)

Nanoparticle-Based Solar Cells
Dr. Paul Alivistatos - University of California, Berkeley

Flexible Solar Cells for Portable Power
Dr. James Sheats - Nanosolar, Inc.

Efficient Polymer Solar Cells by Solution Process
Prof. Yang Yang - University of California, Los Angeles

Small Molecule-Based Solar Cells
Peter Peumans - Stanford University

Advances in Plexcore Technology for Organic Solar Cells
Dr. Shawn Williams - Plextronics, Inc.
Posted by Kuppuswamy Kalyanasundaram at 9:22
Titania nanotubes-based DSSCs can have efficiencies upto 15%
Quotes from press reports:

A solar cell, made of titania nanotubes and natural dye, may be the answer to
making solar electricity production cost-effective, according to a Penn State researcher
(Dr. Craig Grimes, professor of electrical engineering and materials science and engineering)

The researchers are instead looking at titania nanotubes to replace the particulate
coatings in dye sensitive solar cells and, their initial attempt produced about 3 percent
conversion of solar energy to electricity, they report in today's issue of Nano Letters. T
he researcher's inability to grow longer titania nanotubes, constrained the solar conversion rate.

"I think we can reach a 15 percent conversion rate with these cells, and other researchers
do as well," says Grimes. "That is 15 percent with a relatively easy fabrication system that
is commercially viable."

for full report see the source article at
Posted by Kuppuswamy Kalyanasundaram at 9:15
Conference paper presentations
paper to be presented in the session " Fundamentals, Novel Devices and
New Materials /New Types of Cells and Modules

4 September 2006
A. Hinsch & M. Peters (Fraunhofer ISE, Freiburg, Germany) et al.
Developments for Dye Solar Modules: Results from an Integrated Approach

M. Toivola, J. Halme, P. Lund & K. Miettunen (paper 1AO.7.4 )
HUT, Helsinki, Finland
Nanostructured Dye-Sensitized Solar Cells on Flexible Substrates Using
Industrially Scaleable Manufacturing Methods

5 September 2006
1BO.9.2 F.O. Lenzmann, J.A.M. van Roosmalen,
P.M. Sommeling, J. Es-Sbai, N.J. Bakker & H.J.P. Smit (ECN, Petten, The Netherlands)
J.J.T. Smits & H.P.C.E. Kuipers (Shell Global Solutions, Amsterdam, The Netherlands)
A New Approach to Solid State Dye Solar Cells. Recent Developments and
Discussion of a Concept Based on Direct Regeneration of the Dye by Metallic

K.R. Thampi, P. Liska, S. Ito, H. Snaith, C. Klein & M. Graetzel (1BO.9.4)
EPFL, Lausanne, Switzerland
New Trends in Dye Sensitized Solar Cell Research

H.M. Upadhyaya, S. Calnan & A.N. Tiwari (CREST, Leicester, United Kingdom)
S. Ito, P. Liska, K.R. Thampi & M. Graetzel (EPFL, Lausanne, Switzerland)
Flexible Dye Sensitized Solar Cells Using Novel Lift-off Approach
Posted by Kuppuswamy Kalyanasundaram at 9:11
Conference: IPS 16
16th International Conference on Photochemical Conversion and
Storage of Solar Energy (IPS-16),

Uppsala, Sweden, July 2-7, 2006.

The IPS-16 Conference will include the following topics:

? Photoinduced electron and energy transfer
? Solar Hydrogen
? Biomimetic Systems
? Molecular and Nanostructured Solar Cells
? Photocatalysis and Environmental Chemistry
? Photosynthesis and Hydrogenases
? Photoelectrochemistry

Conference website:
Posted by Kuppuswamy Kalyanasundaram at 9:00
Conference: Renewable Energy 2006
Renewable Energy 2006 9-13 October 2006 Japan

International Conference and Exhibition, joint conference with the
International Solar Energy Society (ISES) Chiba, Japan.

Dr Hans Desilvestro has been invited to give a paper
?Industrialisation of Dye Solar Cells?

Source: DYESOL Newsletter June 2006
Posted by Kuppuswamy Kalyanasundaram at 8:57
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