Navigation Links
Slicing solar power costs
Date:9/14/2008

SALT LAKE CITY University of Utah engineers devised a new way to slice thin wafers of the chemical element germanium for use in the most efficient type of solar power cells. They say the new method should lower the cost of such cells by reducing the waste and breakage of the brittle semiconductor.

The expensive solar cells now are used mainly on spacecraft, but with the improved wafer-slicing method, "the idea is to make germanium-based, high-efficiency solar cells for uses where cost now is a factor," particularly for solar power on Earth, says Eberhard "Ebbe" Bamberg, an assistant professor of mechanical engineering. "You want to do it on your roof."

Dinesh Rakwal, a doctoral student in mechanical engineering, adds: "We're coming up with a more efficient way of making germanium wafers for solar cells to reduce the cost and weight of these solar cells and make them defect-free."

Bamberg and Rakwal are publishing their findings in the Journal of Materials Processing Technology. Their study has been accepted, and a final version will be published online late this month or in early October, and in print in 2009.

Brass-coated, steel-wire saws now are used to slice round wafers of germanium from cylindrical single-crystal ingots. But the brittle chemical element cracks easily, requiring broken pieces to be recycled, and the width of the saws means a significant amount of germanium is lost during the cutting process. The sawing method was developed for silicon wafers, which are roughly 100 times stronger.

The new method for slicing solar cell wafers known as wire electrical discharge machining (WEDM) wastes less germanium and produces more wafers by cutting even thinner wafers with less waste and cracking. The method uses an extremely thin molybdenum wire with an electrical current running through it. It has been used previously for machining metals during tool-making.

Germanium ser
'/>"/>

Contact: Lee Siegel
leesiegel@ucomm.utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Stevens assists enXco with construction of solar photovoltaic system
2. Sun to set on Ulysses solar mission on July 1
3. Did the solar system bounce finish the dinosaurs?
4. Solar flares set the Sun quaking
5. Popcorn-ball design doubles efficiency of dye-sensitized solar cells
6. The future of solar-powered houses is clear
7. Substantial improvement in essential cheap solar cell process
8. Telecom research leads to solar cell breakthrough
9. Nanowires hold promise for more affordable solar cells
10. Hinode: new insights on the origin of solar wind
11. Smarter energy storage for solar and wind power
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Slicing solar power costs
(Date:8/21/2014)... the pancreas digesting itself resulting in severe abdominal pain, ... around 20,000 patients are diagnosed with the disease resulting ... treatment is restricted to intravenous fluid and nutritional support. ... Life Sciences, who led the research, said "The major ... stones and excessive alcohol intake combined with a high ...
(Date:8/20/2014)... , Aug. 20, 2014 /CNW/ -  Issue ... and can quickly become life threatening for some children.    ... as 1.2 million Canadians have food allergies and this number ... cent of children are estimated to have food allergies.  ... mild skin irritations and hives to breathing difficulties and loss ...
(Date:8/20/2014)... of Health has awarded the Oklahoma Medical Research Foundation ... on anthrax and the bacteria,s effects on humans. ... and his colleagues have studied the human immune response ... for Human Immunology. The original funding came soon after ... heels of the terrorist attacks of Sept. 11, 2001. ...
Breaking Biology News(10 mins):Insulin offers new hope for the treatment of acute pancreatitis 2Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3$14.5 million grant awarded to continue anthrax studies 2
... United States, African Americans have approximately twice the risk ... a similar prevalence in earlier stages of chronic kidney ... (GW) researcher Dominic Raj, M.D., identifies factors that mediate ... black patients and white patients, as well as among ...
... range-wide assessment of the bonobo (formerly known as the ... known and endangered great ape is quickly losing space ... of usable habitat is attributed to both forest fragmentation ... of Georgia, University of Maryland, the Wildlife Conservation Society, ...
... University School of Medicine (BUSM) and Boston Medical Center ... initiative funded by the Bill & Melinda Gates Foundation. ... BMC, and Ducksoo Kim, MD, professor of radiology at ... fellowship at BMC, will use nanotechnology to develop a ...
Cached Biology News:Genetics contribute to increased risk for end-stage renal disease for African Americans with CKD 2Study finds the forgotten ape threatened by human activity and forest loss 2Study finds the forgotten ape threatened by human activity and forest loss 3BUSM/BMC receives Grand Challenges Explorations grant to develop next generation condom 2BUSM/BMC receives Grand Challenges Explorations grant to develop next generation condom 3
(Date:8/21/2014)... -- China Cord Blood Corporation (NYSE: CO ) ... results for the first quarter of fiscal year 2015 ... the US.  The Company will host ... August 29, 2014 to discuss its financial performance and ... followed by a question and answer session.  Interested parties ...
(Date:8/21/2014)... Gallus BioPharmaceuticals , LLC, ... manufacturing organization (CMO) announced today that it has ... company focused on the development of innovative approaches ... anti-prostate specific membrane antigen (PSMA) monoclonal antibody used ... the agreement the antibody will be produced in ...
(Date:8/20/2014)... of patented university inventions licensed to biotechnology firms ... commercialization. To open these roadblocks, the researchers suggest ... the discovery stage could lead to faster commercialization ... derived from discoveries made in university laboratories and ... during clinical trials, which have a high failure ...
(Date:8/20/2014)... 2014 High performance computing (HPC) ... most complete climate and Earth system model to ... issues. , Eight national laboratories, including Lawrence ... Center for Atmospheric Research, four academic institutions and ... participating national laboratories include Argonne, Brookhaven, Lawrence Berkeley, ...
Breaking Biology Technology:China Cord Blood Corporation to Report First Quarter of Fiscal 2015 Financial Results 2Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 2Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 3Early bottlenecks in developing biopharmaceutical products delay commercialization 2Early bottlenecks in developing biopharmaceutical products delay commercialization 3New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3
... is pleased to announce the,never- before assembly of ... Lighting the Onco-Pipeline -- Innovations in Stem Cell,Biomarker, ... in Tampa,Florida. iiBIG is particularly pleased to join ... Florida, University of Florida, Shands,Cancer Center, Scripps Florida, ...
... Ultra-Fine Beam Shaping Device Optimized for Targeting ... Stereotactic Radiotherapy and Radiosurgery, PALO ALTO, ... (NYSE: VAR ) has received FDA ... (MLC), an ultra-fine beam shaping,device for radiosurgery. ...
... Morria Biopharmaceuticals Plc, a,private biopharmaceutical company ... today that it has,appointed Rosemary Mazanet M.D., ... Mazanet has significant experience in both executive ... Dr. Mazanet serves on the Board of ...
Cached Biology Technology:Lighting the Onco-Pipeline, Stem Cell Cancer, and More at Global Cancer Congress, January 28-29, 2008, Tampa 2Lighting the Onco-Pipeline, Stem Cell Cancer, and More at Global Cancer Congress, January 28-29, 2008, Tampa 3Varian Medical Systems Receives FDA 510(k) Clearance for High-Definition Collimator That Enables Ultra-Fine Intensity-Modulated Radiosurgery 2Varian Medical Systems Receives FDA 510(k) Clearance for High-Definition Collimator That Enables Ultra-Fine Intensity-Modulated Radiosurgery 3Morria Biopharmaceuticals Plc Announces Appointment of Dr. Rosemary Mazanet as Interim Chief Executive Officer 2
... Custom monoclonal antibody development to targets including ... molecules, DNA, and cancer-specific surface antigens. ... and is completed in approximately 40 days ... nature of antigens). Phase I: Immunization, ...
... Clone/PAD: ZMD.460. Immunogen: Synthetic peptide ... human C35 protein (chromosome 17 open reading ... Specific for the C35 protein. On ... at ~15 kDa band. Reactivity: Human ...
... Peptide sequences: Two separate ... corresponding to the same sequence used ... antiserum (Catalog No. 160890) ... with Cayman's guanylate cyclase polyclonal antiserum ...
Immunogen: Secretory component isolated from human colostrum. Storage: 4 C...
Biology Products: