Navigation Links
Penn and Drexel team demonstrates new paradigm for solar cell construction
Date:11/12/2013

potassium niobate, the parent, polar material, and barium nickel niobate, which contributes to the final product's bandgap.

The researchers used X-ray crystallography and Raman scattering spectroscopy to ensure they had produced the crystal structure and symmetry they intended. They also investigated its switchable polarity and bandgap, showing that they could indeed produce a bulk photovoltaic effect with visible light, opening the possibility of breaking the Shockley-Queisser limit.

Moreover, the ability to tune the final product's bandgap via the percentage of barium nickel niobate adds another potential advantage over interfacial solar cells.

"The parent's bandgap is in the UV range," Spanier said, "but adding just 10 percent of the barium nickel niobate moves the bandgap into the visible range and close to the desired value for efficient solar energy conversion. So that's a viable material to begin with, and the bandgap also proceeds to vary through the visible range as we add more, which is another very useful trait."

Another way to get around the inefficiency imposed by the Shockley-Queisser limit in interfacial solar cells is to effectively stack several solar cells with different bandgaps on top of one another. These multi-junction solar cells have a top layer with a high bandgap, which catches the most valuable photons and lets the less valuable ones pass through. Successive layers have lower and lower bandgaps, getting the most energy out of each photon, but adding to the overall complexity and cost of the solar cell.

"The family of materials we've made with the bulk photovoltaic effect goes through the entire solar spectrum," Rappe said. "So we could grow one material but gently change the composition as we're growing, resulting in a single material that performs like a multi-junction solar cell."

"This family of materials." Spanier said, "is all the more remarkable because it is comprised of inexpen
'/>"/>

Contact: Evan Lerner
elerner@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Drexel researchers looking inside vessels to understand bloods ebb and flow
2. Making memories: Drexel researchers explore the anatomy of recollection
3. Marvin Test Solutions Demonstrates Next-Generation Armament Test Solutions at Paris Air Show
4. Fingerprint Cards (FPC) Demonstrates Fingerprint Biometric Touch Sensor for Microsoft Windows 8.1
5. Rotavirus vaccine developed in India demonstrates strong efficacy
6. Genetic study of house dust mites demonstrates reversible evolution
7. First-in-man study demonstrates the therapeutic effect of RNAi gene silencing in cancer treatment
8. UT Arlington physics team demonstrates new power generation technique
9. University of Toronto study demonstrates impact of adversity on early life development
10. Published clinical trial demonstrates efficacy of Sea-Band® for migraine-related nausea
11. WALTHAM® demonstrates commitment to scientific dialogue and exchange at international human animal interaction conference
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Penn and Drexel team demonstrates new paradigm for solar cell construction
(Date:8/22/2014)... German . ... are fixated in a way so as to align ... and Fudan University researchers are planning on looking into ... findings are being published today in the scientific journal ... sensitive molecules. Everyone knows that at least from ...
(Date:8/22/2014)... strong antioxidants and can reduce free radical ... against oxidative stress? Jianbo Zhao and co-workers ... Medical University, China discovered that green tea ... neuronal apoptosis, indicating green tea polyphenols play ... under oxidative stress. The relevant study has ...
(Date:8/22/2014)... In 2015, American consumers will finally be able to ... Although touted as zero-emissions vehicles, most of the cars ... fossil fuel that contributes to global warming. , Now ... device that uses an ordinary AAA battery to produce ... electric current through two electrodes that split liquid water ...
Breaking Biology News(10 mins):Proteins: New class of materials discovered 2Stanford scientists develop a water splitter that runs on an ordinary AAA battery 2Stanford scientists develop a water splitter that runs on an ordinary AAA battery 3
... human genetics at Baylor College of Medicine, first published her ... starvation, sometimes resulting in a rare change that benefited the ... current issue of the journal Molecular Cell, she and her ... that this only occurs at a special time and place ...
... prediction. , Computers can predict the detailed structure of ... least some of the time, according to new studies ... which were reported in the September 16, 2005, issue ... that scientists eventually may be able to determine the ...
... led by University of California, San Diego biochemists has ... produce 10 trillion varieties of a single protein, a ... drugs. , In the September 18 advance on-line publication ... researchers describe the mechanism by which a virus that ...
Cached Biology News:Stressed cells spark DNA repair missteps and speed evolution 2Computers close in on protein structure prediction 2Computers close in on protein structure prediction 3Computers close in on protein structure prediction 4UCSD discovery may provide novel method to generate medically useful proteins 2UCSD discovery may provide novel method to generate medically useful proteins 3
(Date:8/22/2014)... the University of Surrey have discovered how the receptors ... clock genes. , The new study, published today in ... clock activity in turn regulates the cycle of all ... discovered that the local biological clock and its control ... the clock in bladder physiology and ageing. ...
(Date:8/22/2014)... are intensively investigated for application as catalysts, ... and components in photonics and molecular electronics. ... for understanding physical and chemical properties, has ... USA, have demonstrated that high-resolution electron microscopy ... structure in which all gold atoms are ...
(Date:8/22/2014)... Research and Markets has announced ... Permeation Chromatography (GPC) Industry Report 2014" report to ... Gel Permeation Chromatography (GPC) Industry Report is a professional ... global gel permeation chromatography industry with a focus on ... overview of the industry including definitions, classifications, applications and ...
(Date:8/22/2014)... 2014 Nerium International, the go-to, ... the spotlight again. Nerium will showcase its signature ... Body Contouring Cream to Hollywood’s elite at the ... the 66th Primetime Emmy® Awards. , Developed from ... clinical trials show that NeriumAD night cream dramatically ...
Breaking Biology Technology:Treatment for overactive bladder and irritable bowel syndrome advanced through pioneering research 2A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy 2Global and China Gel Permeation Chromatography (GPC) Industry Report 2014 2Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 2Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 3
... Nectid, Inc. ( www.nectid.com ) announced today that ... patents and patents-applications to Grunenthal GmbH ( www.grunenthal.com ), ... in pain drug discovery and research. The patent portfolio ... Pain Drug Discovery program and two key drug delivery ...
... , COLUMBUS, Ohio Engineers at Ohio State University have ... from nine different angles at once to create a 3D ... that move around an object; the new lens is the ... itself. Allen Yi, associate professor of integrated systems engineering ...
... NEW YORK, March 21, 2011 Reportlinker.com announces ... available in its catalogue: ... http://www.reportlinker.com/p0459142/Global-Angiongenesis-Inhibitors-and-Stimulators-Industry.html ... Angiogenesis Inhibitors and Stimulators in US$ Million ...
Cached Biology Technology:Seeing in stereo: Engineers invent lens for 3-D microscope 2Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 2Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 3Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 4Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 5Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 6Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 7Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 8Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 9Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 10Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 11Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 12Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 13Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 14Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 15Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 16Reportlinker Adds Global Angiongenesis Inhibitors and Stimulators Industry 17
...
Improve inventory management with stainless steel red cell canisters; ensure product safety with CO2 or LN2 backup systems. A complete solution for your blood banking needs....
... oligonucleotides: PTOs are internucleotide modifications, ... backbone is replaced by a sulphur atom. ... degradation. PTOs are available as ... Oligonucleotides with thio-caps ...
Improve inventory management with stainless steel red cell canisters; ensure product safety with CO2 or LN2 backup systems. A complete solution for your blood banking needs....
Biology Products: