Diode lights offer bright future for low energy
May 13, 2009
Flat screen television sets. German scientists said Wednesday they had tweaked organic light-emitting diodes (OLEDs) -- the materials used in flat-screen TVs, laptop computer screens and mobile phone displays -- to become flexible, energy-efficient sources of white light.
German scientists said Wednesday they had tweaked organic light-emitting diodes (OLEDs) -- the materials used in flat-screen TVs, laptop computer screens and mobile phone displays -- to become flexible, energy-efficient sources of white light.
Sebastian Reineke and colleagues of Dresden's Technical University, reporting in the British journal Nature, modified the internal structure of a white-light OLED to reduce internal energy loss and boost photon output.
The improved device yielded 90 lumens (a measurement of brightness) per watt of electricity consumed, he told AFP.
This compared to 15 lumens for a conventional incandescent light bulb and between 50 and 70 lumens per watt for modern compact fluorescent light bulbs.
Reineke said OLED screens could be used to light a room or provide a reading light, provided they overcame two obstacles in order to make the product commercially feasible.
The first is to boosting the lifespan of important components called "blue emitters" and also achieve economies of scale in manufacturing, he said.
(c) 2009 AFP
-
Efficient organic LEDs a step toward better lights
Dec 23, 2008 |
not rated yet |
0
-
Europe joins R&D forces on Organic LED technology for Lighting Applications
Jan 31, 2005 |
not rated yet |
0
-
Universal Display First to Achieve 30 Lumens Per Watt White OLED
Aug 05, 2005 |
not rated yet |
0
-
Next Generation Light Source
Nov 23, 2005 |
not rated yet |
0
-
Freeing light shines promise on energy-efficient lighting
Jul 15, 2008 |
not rated yet |
0
-
Engineers build first sub-10-nm carbon nanotube transistor
Feb 01, 2012 |
4.9 / 5 (33) |
30
-
Something old, something new: Evolution and the structural divergence of duplicate genes
Jan 31, 2012 |
4.6 / 5 (7) |
1
-
The hidden nanoworld of ice crystals: Revealing the dynamic behavior of quasi-liquid layers
Jan 30, 2012 |
5 / 5 (4) |
1
-
Stock market network reveals investor clustering
Jan 27, 2012 |
3.9 / 5 (23) |
8
-
Of microchemistry and molecules: Electronic microfluidic device synthesizes biocompatible probes
Jan 26, 2012 |
5 / 5 (2) |
0
-
How to tilt a object
5 hours ago
-
How to calculate total compressibility in liquid porous solid system
11 hours ago
-
Need help reading 3-D
Feb 11, 2012
-
A way to send and receive wireless data
Feb 11, 2012
-
Calling function with no input argument
Feb 10, 2012
-
Force free body diagram problem on gym equipment
Feb 10, 2012
- More from Physics Forums - General Engineering
More news stories
Google might launch Drive for cloud storage soon
(PhysOrg.com) -- Google's next big move, according to the Wall Street Journal, is a cloud storage service called Drive. Hardly first to the plate, Google is simply catching up to introducing its cloud reposi ...
19 hours ago |
4.8 / 5 (5) |
5
|
Iran blocks email, restricts net access: reports
Iran has further restricted access to the Internet and blocked popular email services for the past few days, in a move a top lawmaker said could "cost the regime dearly," media reports said on Sunday.
12 hours ago |
5 / 5 (2) |
5
Walney offshore wind farm is world's biggest (for now)
(PhysOrg.com) -- The Walney wind farm on the Irish Sea--characterized by high tides, waves and windy weather--officially opened this week. The farm is treated in the press as a very big deal as the Walney ...
Technology / Energy & Green Tech
Feb 11, 2012 |
4.1 / 5 (14) |
59
|
Navy to begin tests on electromagnetic railgun prototype launcher
The Office of Naval Research (ONR)'s Electromagnetic (EM) Railgun program will take an important step forward in the coming weeks when the first industry railgun prototype launcher is tested at a facility ...
Feb 06, 2012 |
4.6 / 5 (20) |
95
|
New power source discovered
(PhysOrg.com) -- Researchers at the Massachusetts Institute of Technology (MIT) and RMIT University have made a breakthrough in energy storage and power generation.
Technology / Energy & Green Tech
Feb 10, 2012 |
4.6 / 5 (52) |
51
|
Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy
For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan, from a type of hydrangea that grows in Tibet and Nepal. More recent studies suggest that halofuginone, ...
New method to examine batteries -- MRI from the inside
There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...
A mitosis mystery solved: How chromosomes align perfectly in a dividing cell
Although the process of mitotic cell division has been studied intensely for more than 50 years, Whitehead Institute researchers have only now solved the mystery of how cells correctly align their chromosomes during symmetric ...
Lab study raises questions over nano-particle impact
Tests involving chickens have raised questions about the impact on health from engineered nano-particles, the ultra-fine grains commonly used in drugs and processed foods, scientists said on Sunday.
Starve a virus, feed a cure? Findings show how some cells protect themselves against HIV
A protein that protects some of our immune cells from the most common and virulent form of HIV works by starving the virus of the molecular building blocks that it needs to replicate, according to research published online ...
Researchers find extensive RNA editing in human transcriptome
In a new study published online in Nature Biotechnology, researchers from BGI, the world's largest genomics organization, reported the evidence of extensive RNA editing in a human cell line by analysis of RNA-seq data, demons ...
