Navigation Links
Device proves solar cell potential of high bandgap inorganic nanowire arrays
Date:4/12/2011

. "In comparison, solar cells using silicon and gallium arsenide require more expensive production techniques."

Based on a concept published in Nano Letters in 2007 by Zhang and collaborators Lin-Wang Wang (Lawrence Berkeley National Laboratory) and Angelo Mascarenhas (National Renewable Energy Laboratory), the array was fabricated by Zhang's current collaborators Zhiming Wu, Jinjian Zheng, Xiangan Lin, Xiaohang Chen, Binwang Huang, Huiqiong Wang, Kai Huang, Shuping Li and Junyong Kang at the Fujian Key Laboratory of Semiconductor Materials and Applications in the Department of Physics at Xiamen University, China.

Past attempts to use high band gap materials did not actually use the semiconductors to absorb light but instead involved coating them with organic molecules (dyes) that accomplished the photo absorption and simply transmitted electrons to the semiconductor material. In contrast, the team's heterojunction nanowires absorb the light directly and efficiently conduct a current through nano-sized "coaxial" wires, which separate charges by putting the excited electrons in the wires' zinc oxide cores and the "holes" in the zinc selenide shells.

"By making a special heterojunction architecture at the nanoscale, we are also making coaxial nanowires which are good for conductivity," said Zhang. "Even if you have good light absorption and you are creating electron-hole pairs, you need to be able to take them out to the circuit to get current, so we need to have good conductivity. These coaxial nanowires are similar to the coaxial cable in electrical engineering. So basically we have two conducting channels the electron going one way in the core and the hole going the other way in the shell."

The nanowires were created by first growing an array of six-sided zinc oxide crystal "wires" from a thin film of the same material using vapor deposition. The technique created a forest of smooth-sided needle-like zinc oxide crystals with uniform diameters (
'/>"/>

Contact: James Hathaway
jbhathaw@uncc.edu
704-687-5743
University of North Carolina at Charlotte
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. FDA Approves New Device to Treat Brain Aneurysms
2. First polymer solar-thermal device heats home, saves money
3. CryoLife Files Investigational Device Exemption (IDE) to Begin Clinical Trials for PerClot® in the U.S.
4. Smarter memory device holds key to greener gadgets
5. New technology would dramatically extend battery life for mobile devices
6. Physicists measure current-induced torque in nonvolatile magnetic memory devices
7. Significant Reduction in Pain With the Mynx Vascular Closure Device Versus Angio-Seal Device
8. Liquid metal key to simpler creation of electrodes for microfluidic devices
9. QuickExtenderPro.com Penis Extender Device Engineered for Quick, Safe and Effective Alternative to Penis Enlargement Surgery
10. Aperion Biologics Initiates Clinical Trial of Z-Lig™ Device for Anterior Cruciate Ligament Reconstruction
11. Abaxis Makes $2.8 Million Equity Investment in Scandinavian Micro Biodevices APS
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... 2014 Three Lawrence Livermore researchers ... Hydrogen Production R&D Award for their research ... using sunlight. , Shared with collaborators from the ... of Nevada, Las Vegas (UNLV), the award recognizes ... photoelectrochemical solar-hydrogen production and corrosion processes. , These ...
(Date:8/28/2014)... 2014 Best Sanitizers, Inc., a leader ... processing industry, is asking industry professionals to prepare for ... the E2 soap they’re currently using to the Best ... Hand hygiene is critical to fighting cross-contamination and ... Six key criteria are identified to evaluate the effectiveness ...
(Date:8/28/2014)... , Aug. 28, 2014 /PRNewswire/ ... new market research report is ... Whole Exome Sequencing Market ... Preparation, Target Enrichment), by Services ... Synthesis), by Application (Cancer, Monogenic ...
(Date:8/28/2014)... MENLO PARK, Calif. , Aug. 28, 2014 ... company focused on developing novel mid- to late-stage ... raised $7.0 million in its first round of ... AshHill Biomedical Investments and Hercules Bioventures with participation ... biotech entrepreneur and pharmaceutical executive, Dr. Larry ...
Breaking Biology Technology:Livermore Team Awarded for Hydrogen Production Research 2Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3
... The past is a source of knowledge, and ... S. Ambrose (1936-2002) Ernest Mueller , ... and other archival collections represent,a rich source of study material, much ... by experts in the field. While the majority of,this material was ...
... , ... NBS microbiologists recently assisted researchers at the University of California in ... Pichia pastoris yeast. Top,yields by the researchers thus far had been ... shake flasks. By switching to a BioFlo 3000 fermentor, ...
... , ... have more general definitions as well. Those given here,are specific to their application in ... absorption Removing a particular antibody or antigen ... that,sample., adsorption Nonspecific adherence of substances ...
Cached Biology Technology:Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 2Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 3Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 4Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 5Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 6Genomic Analysis of Formalin-Fixed Paraffin Embedded (FFPE) Tissues through the use of Whole Genome Amplification (WGA) 7140-Fold Increase of Protein Achieved in Pichia Fermentation 2Glossary for The BioPharm Guide to Fermentation and Cell Culture 2Glossary for The BioPharm Guide to Fermentation and Cell Culture 3Glossary for The BioPharm Guide to Fermentation and Cell Culture 4Glossary for The BioPharm Guide to Fermentation and Cell Culture 5Glossary for The BioPharm Guide to Fermentation and Cell Culture 6Glossary for The BioPharm Guide to Fermentation and Cell Culture 7Glossary for The BioPharm Guide to Fermentation and Cell Culture 8Glossary for The BioPharm Guide to Fermentation and Cell Culture 9Glossary for The BioPharm Guide to Fermentation and Cell Culture 10Glossary for The BioPharm Guide to Fermentation and Cell Culture 11Glossary for The BioPharm Guide to Fermentation and Cell Culture 12Glossary for The BioPharm Guide to Fermentation and Cell Culture 13Glossary for The BioPharm Guide to Fermentation and Cell Culture 14Glossary for The BioPharm Guide to Fermentation and Cell Culture 15Glossary for The BioPharm Guide to Fermentation and Cell Culture 16
(Date:8/31/2014)... challenges in modern medicine is developing drugs that are ... and side-effects to the patient. Such properties are directly ... Ideally, the drug should have a shape that is ... binds it with high specificity. Publishing in Nature ... acid that can impact the 3D structure of bioactive ...
(Date:8/31/2014)... past several decades, malaria diagnosis has changed very little. After ... the blood across a glass slide, stains it with a ... parasite, which causes the disease. This approach gives an accurate ... an important measure of disease severity but is not ... research team from the Singapore-MIT Alliance for Research and Technology ...
(Date:8/29/2014)... about what genetic changes transform wild animals into domesticated ... is a University of Montana assistant professor, has made ... of the brain and the nervous system were particularly ... 28 in Science and gives answers to ... ., The domestication of animals and plants, a prerequisite ...
Breaking Biology News(10 mins):A new synthetic amino acid for an emerging class of drugs 2A new synthetic amino acid for an emerging class of drugs 3A new way to diagnose malaria 2A new way to diagnose malaria 3New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3
... Luxembourg Centre for Systems Biomedicine (LCSB) of the University ... from which differentiated cells for instance skin cells ... cell types such as nerve cells, for example. ... computer-based instructions for reprogramming cells are of huge significance ...
... rats have long since been a standard animal model for ... years on average and high incidence of cancer. Naked mole ... African subterranean rodent has a maximum lifespan exceeding 30 years ... not a single incident of cancer has been detected makes ...
... central nervous system is injured, oligodendrocyte precursor cells (OPC) ... on demyelinated axons. Scientists at the Institute of Molecular ... now discovered that a distinct protein regulates the direction ... protein NG2, which is expressed at the surface of ...
Cached Biology News:Computational biology: Cells reprogrammed on the computer 2The naked mole-rat's secret to staying cancer free 2Scientists at Mainz University decode mechanisms of cell orientation in the brain 2
...
...
... CpGenome Fast DNA Modification Kit contains reagents ... a DNA sample. In the bisulfite reaction, ... converting them to uracils, while 5-methylcytosines remain ... DNA will differ depending on whether the ...
... Gel-Digesting Preparation contains a unique β-agarose digesting ... recovery of intact DNA and RNA from ... electrophoresis in TAE, TBE, MOPS, or phosphate ... in the TAE, TBE, MOPS, and phosphate ...
Biology Products: