TORONTO, Feb. 22, 2012 /CNW/ - Cleanfield Alternative Energy Inc. ("Cleanfield or Company") (TSX VENTURE: AIR) is
pleased to provide a Nanowire Solar Cell collaboration update regarding
its "Next Generation Solar Cell". Cleanfield, along with its partners
McMaster University, Zhejiang University and Hyperion Shanghai Drive
Technology Co. Ltd., were recently awarded an International Science and
Technology Partnerships Program (ISTPP) grant, with an objective to
further develop a new photovoltaic (PV) nanowire solar cell based on
low cost substrates initially intended for the rapidly expanding
concentrator photovoltaic (CPV) market.
The ISTPP funds will be used to develop a semiconductor nanowire, which
will improve the efficiency and reduce fabrication costs of PV cells
due to light trapping, enhanced carrier extraction, and the ability to
use inexpensive substrates. This project will draw on the existing
strengths of McMaster University in the fabrication of III-V compound
semiconductor nanowires to advance the state-of-the-art PV and the
Zhejiang University group, which have expertise in optoelectronic
devices including electrode deposition and optical characterization of
materials and devices.
The cost of PV devices can be reduced by replacing the single crystal
substrates with thin film technology. However, the poly-crystalline
nature of these thin film technologies generally results in reduced PV
efficiency. To overcome these limitations, a substantial body of
recent work in PV is beginning to exploit intentionally engineered
nano-scale structures and the physics of reduced dimensionality to
increase device performance. One of the leading contenders in the area
of nanotechnology-based PV devices is semiconductor nanowires.
Nanowires are one-dimensional rods, 1-5 microns in length and 10-100 nm
in diameter. Nanowires are easily grown using the well-known
vapour-liquid-solid (VLS) process. The rapid growth rate (up to 10
microns per hour) and lower material utilization of nanowires compared
to thin film PV devices implies lower fabrication costs. In addition,
nanowires can be grown on less expensive substrates as compared to the
expensive germanium substrates used in current concentrator PV cells.
This cost reduction will expand the concentrator PV market in solar
farm and commercial roof-top applications. In collaboration with
Cleanfield, McMaster has successfully developed the concept for a low
cost, two-junction concentrator cell and developed the technology
necessary to produce high quality nanowires. The two-junction cell
will be further developed under the ISTPP project.
Cleanfield's CTO Mihail Stern explains, "Nanowires give far greater
freedom to combine the optimum materials required for higher PV
efficiency. One of the most relevant metrics for PV devices is the
energy conversion efficiency; i.e. the efficiency with which sunlight
can be converted to electrical energy. Nanowire technology (nanowire is
about 100,000 times smaller than the diameter of human hair) will
reduce the cost and increase the accessibility of solar panels, a
leading source of renewable energy."
Cleanfield began its collaboration with McMaster on the nanowires in
2008. Under its agreement, Cleanfield retains commercialization rights
regarding the exciting technology.
Share Issuance: Subject to TSX Venture Exchange approval, Cleanfield will issue
1,721,980 common shares at $0.05 per share to satisfy certain debt
owing to four arm's length creditors of its subsidiary, Cleanfield
Energy Corp. Upon Exchange approval, the shares will be issued and
subject to a four-month Exchange hold period.
About Cleanfield Alternative Energy: Cleanfield is an innovative technology company focused on the research,
development and distribution of renewable energy solutions for the
urban environment. The company owns industry leading and proprietary
inverter technologies, which it currently sells through a complete
solution - a 3 kW vertical axis wind turbine. The company is also
developing several advanced solar photovoltaic technologies with
Forward Looking Statements: Certain statements in this news release may be considered to be
forward-looking. These statements relate to future events or
Cleanfield's future results including revenues and reflect the current
assumptions and expectations of management. Unknown factors may affect
the events, performance, revenues and results of operations described
herein. Cleanfield undertakes no obligation, and does not intend to
update or revise any forward-looking statements, whether as a result of
new information, future events or otherwise, except as may be required
under applicable laws.
The TSX Venture Exchange does not accept responsibility for the adequacy
or accuracy of this release.
SOURCE Cleanfield Alternative Energy Inc.
For further information:
Go to www.cleanfieldenergy.com or contact Tony Verrelli, CEO, Cleanfield at 416 756-4890 or firstname.lastname@example.org.