Navigation Links
Light sensor breakthrough could enhance digital cameras
Date:6/18/2009

TORONTO, ON New research by a team of University of Toronto scientists could lead to substantial advancements in the performance of a variety of electronic devices including digital cameras.

Researchers created a light sensor like a pixel in a digital camera that benefits from a phenomenon known as multi-exciton generation (MEG). Until now, no group had collected an electrical current from a device that takes advantage of MEG.

"Digital cameras are now universal, but they suffer from a major limitation: they take poor pictures under dim light. One reason for this is that the image sensor chips inside cameras collect, at most, one electron's worth of current for every photon (particle of light) that strikes the pixel," says Ted Sargent, professor in U of T's Department of Electrical and Computer Engineering. "Instead generating multiple excitons per photon could ultimately lead to better low-light pictures."

In solar cells and digital cameras, particles of light - known as photons - are absorbed in a semiconductor, such a silicon, and generate excited electrons, known as excitons. The semiconductor chip then measures a current that flows as a result. Normally, each photon is converted into at most one exciton. This lowers the efficiency of solar cells and it limits the sensitivity of digital cameras. When a scene is dimly lit, small portable cameras like those in laptops suffer from noise and grainy images as a result of the small number excitons.

"Multi-exciton generation breaks the conventional rules that bind traditional semiconductor devices," says Sargent. "This finding shows that it's more than a fascinating concept: the tangible benefits of multiple excitons can be seen in a light sensor's measured current."


'/>"/>

Contact: Joyann Callender
joyann.callender@utoronto.ca
416-978-6974
University of Toronto
Source:Eurekalert

0

GOOD

Page: 1

Related biology technology :

1. Dendreon Announces Publication of Phase 1 Study Highlighting Immunologic and Clinical Activity of Lapuleucel-T (Neuvenge(R)) in Advanced Breast Cancer Patients
2. ImmuneRegen BioSciences Files 8-K that Highlights Enclosed Shareholder Letter Discussing Recent Achievements and Outlook
3. Safety Profile of TAXUS(R) Liberte(TM) Stent System Highlighted in Worlds Largest Stent Registry
4. Stimuvax(R) Phase II data highlight three-year survival results for patients with non-small cell lung cancer
5. Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Societys 29th Annual Meeting
6. Access Highlighted in Recent BusinessWeek Article
7. Lighting the Onco-Pipeline, Stem Cell Cancer, and More at Global Cancer Congress, January 28-29, 2008, Tampa
8. Highlights of Economic and Business Growth in the Tampa Bay Region
9. Respironics Acquires Apollo Light Systems, Inc., Expands into Circadian Rhythm Device-Based Therapy Market
10. Americas Heartland Launches Third Season Highlighting Contributions of American Farmers and Ranchers
11. CU researchers shed light on light-emitting nanodevice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/19/2013)... (PRWEB) June 19, 2013 Bayer CropScience ... first Bayer Bee Care Community Leadership Award. The award ... Congressional Reception in Washington, D.C., an event where ... to the world’s food supply. , The Bayer ... harnessed the power of the honey bee colony to ...
(Date:6/19/2013)... June 19, 2013 ... presents Innovative Drug Delivery Systems: ... Licensing Opportunities for Generic Pharmaceutical ... There are more than ... drugs approved all over the ...
(Date:6/19/2013)... Applied Rigaku Technologies, Inc. is pleased to publish ... sulfur in ultra-low sulfur diesel (ULSD) using the new ... . The analysis detailed in Rigaku Application Note 1272 ... International Standard specifies an energy dispersive X-ray fluorescence (EDXRF) ... automotive gasoline. , Regulations around the world have limited ...
(Date:6/19/2013)... CA (PRWEB) June 19, 2013 Adding ... Pipette.com is now stocked with Simport’s Dropette® and ... aimed at the customer doing basic biology, chemistry and ... and serology). , For over 35 years, Simport has ... plastic labware - products like the Simport Dropette®. Simport’s ...
Breaking Biology Technology:Community Mentor Wins Inaugural Bayer CropScience Bee Care Leadership Award 2Community Mentor Wins Inaugural Bayer CropScience Bee Care Leadership Award 3Community Mentor Wins Inaugural Bayer CropScience Bee Care Leadership Award 4Innovative Drug Delivery Systems: Novel Product and Formulation Technology Licensing Opportunities for Generic Pharmaceutical Companies 2Innovative Drug Delivery Systems: Novel Product and Formulation Technology Licensing Opportunities for Generic Pharmaceutical Companies 3Rigaku Publishes New Application Note for Analysis of ULSD Per ISO 13032 2Leading Pipette Distributor Pipette.com Now Stocks Transfer Pipettes: Simport’s Dropette and Heathrow Scientific Disposable Plastic Transfer Pipettes 2
... (Nasdaq: MNKD ), focused on discovering, developing and,commercializing ... present at the UBS Global Life Sciences Conference on ... Hyatt Hotel in New York, NY. Interested parties ... of the,presentation in the Investor Relations section of the ...
... Sept. 18 InterMune, Inc.,(Nasdaq: ITMN ) today ... other conditions, 3,000,000 shares of its common stock in ... underwriters,a 30-day option to purchase up to an additional ... All of the shares in the offering,will be sold ...
... Sept. 18 /PRNewswire-FirstCall/-- Biodel Inc. (Nasdaq:,BIOD) today ... program,at the 43rd Scientific Sessions of the ... VIAject(TM) Phase II meal study data ... entitled, "Pharmacokinetics and pharmacodynamics of,insulin VIAject(TM), insulin ...
Cached Biology Technology:InterMune Announces Proposed Public Offering of Common Stock 2Biodel Inc. Announces VIAject(TM) Phase II Meal Study Data at the 2007 European Association for the Study of Diabetes Meeting 2Biodel Inc. Announces VIAject(TM) Phase II Meal Study Data at the 2007 European Association for the Study of Diabetes Meeting 3
(Date:6/19/2013)... June 19, 2013 A decade-long JDRF-funded study ... Helmholtz Zentrum Mnchen, Germany, is providing a deeper ... risk of developing type 1 diabetes (T1D), highlighting ... for the disease. The study, "Seroconversion to Multiple ... in Children," was published today in The ...
(Date:6/19/2013)... , June 19, 2013  New York College ... the United States Patent and Trademark Office for detecting ... that reflect whether guards have been injured, attacked or ... extensive portfolio under the Intellectual Properties Agreements of New ... Pamintuan , President of New York ...
(Date:6/19/2013)... Elsevier, a world-leading provider of scientific, technical and ... the launch of a new open access journal, ... GeoResJ , Elsevier,s earth and planetary science journals portfolio ... aims to provide a forum for rapid publication of ... journal will be co-edited by six Executive Editors, each ...
Breaking Biology News(10 mins):New data on islet autoantibodies in young children defines early type 1 diabetes development 2New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 2New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 3New Technology Using Biometrics Detects If Security Guards Are Attacked, Injured Or Killed 4
... a gene called p63 accelerates aging in mice. Similar versions ... Therefore, the p63 gene is likely to play a fundamental ... p63 gene works, we devised a system for eliminating it ... that these p63 deficient mice were aging prematurely," says Alea ...
... Genome Research Institute (NHGRI), one of the National Institutes ... Research Network will target 13 more organisms as part ... will expand biological knowledge and improve human health. , ... which is a federally chartered committee that advises NHGRI ...
... Skeletal muscles naturally repair themselves very efficiently after ... following damage from overuse during exercise, surgery or ... muscle repair slows noticeably, and in Duchenne Muscular ... functions can't cope with disease progression. , Researchers ...
Cached Biology News:Gene loss accelerates aging 2Possible treatment found for 'chemobrain' 2Possible treatment found for 'chemobrain' 3Possible treatment found for 'chemobrain' 4Possible treatment found for 'chemobrain' 5Muscle repair: Making a good system better, faster; implications for aging, disease 2Muscle repair: Making a good system better, faster; implications for aging, disease 3Muscle repair: Making a good system better, faster; implications for aging, disease 4
... Microarrays designed for genome-wide microRNA ... flexible and powerful Paraflo microfluidic on-chip ... as part of our comprehensive microRNA ... Content The Rice microRNA Microarray ...
... FP-6500 is the research-grade spectrofluorometer with a ... sensitivity S/N ratio 200 or greater for ... is especially designed to keep in mind ... as kinetics, stopped-flow, titration, or anisotropic measurements. ...
... genome-wide microRNA expression profiling and built ... microfluidic on-chip synthesis platform. These microarrays ... comprehensive microRNA Expression Profiling Service. ... microRNA Microarray contains all known fish ...
... designed for genome-wide microRNA expression profiling ... powerful Paraflo microfluidic on-chip synthesis platform. ... of our comprehensive microRNA Expression Profiling ... The Viruses microRNA Microarray contains all ...
Biology Products: