Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Singapore research produces world's best protection from moisture and oxygen

Abstract:
A breakthrough barrier technology from Singapore A*STARís Institute of Materials Research and Engineering (IMRE) protects sensitive devices like organic light emitting diodes (OLEDs) and solar cells from moisture 1000 times more effectively than any other technology available in the market, opening up new opportunities for the up-and-coming plastic electronics sector.

Singapore research produces world's best protection from moisture and oxygen

Singapore | Posted on April 28th, 2008

A team of scientists from Singaporeís Institute of Materials Research and Engineering (IMRE) has developed a new patented film that has the highest reported water vapour barrier performance to date, as tested by the UK Centre for Process Innovation.

The tests have shown that the new film is 1,000 times more impervious to moisture than existing technologies. This means a longer lifetime for plastic electronic devices such as solar cells and flexible displays that use these high-end films but whose sensitive organic materials are easily degraded by water vapour and oxygen.

The new technology is a boon to the burgeoning plastic electronics industry that aims to deliver flexible, lightweight and cheap electronics products to consumers in ways that silicon electronics may never reach such as disposable or wraparound displays, cheap identification tags, low cost solar cells and chemical and pressure sensitive sensors.

A research institute of the Singaporeís Agency of Science, Technology and Research (A*STAR), IMREís breakthrough technology comes as Singapore seeks to jumpstart a plastic electronics industry locally as part of the countryís long-term plan to anchor new knowledge-intensive industries in the economy. The global plastic electronics industry is projected to grow to a market size of more than US$23 billion in the next 5 years .

The Science ñ plugging gaps in current technologies:

The performance of devices like organic light emitting diodes (OLEDs) and solar cells is sensitive to moisture because water and oxygen molecules seep past the protective plastic layer over time and degrades the organic materials which form the core of these products.

Current commercially available films used to protect these materials have a barrier property or water vapour transmission rate of about 10-3g/m2 per day, or one thousandth of a gram per square meter per day at 25∞C and 90% relative humidity (RH). However, the ideal film for organic devices would require a barrier property of better than 10-6g/m2/day at 39∞C and 90% RH, or one millionth of a gram per square meter per day.

Defects such as pinholes, cracks and grain boundaries are common in thin oxide barrier films when fabricated onto plastic substrates. These defects cause a 'pore effect', where oxygen and water molecules are able to seep through and penetrate the plastic barrier. Current barrier technologies focus on reducing these defects by using alternate organic and inorganic multi-layers coated on plastic. These multiple layers ìstaggerî corresponding pores in adjacent layers and create a 'tortuous', lengthy pathway for water and oxygen molecules, making it more difficult to travel through the plastic.

In contrast, IMRE has taken an innovative approach to resolve the 'pore effect' by literally plugging the defects in the barrier oxide films using nanoparticles. This reduces the number of barrier layers needed in the construction of the barrier film down to two layers in this unique nanoengineered barrier stack. IMRE's barrier stack consists of barrier oxide layers and nanoparticulate sealing layers. The nanoparticles used in the barrier film have a dual function - not only sealing the defects but also actively reacting with and retaining moisture and oxygen.

The result is a breakthrough moisture barrier performance of better than 10-6g/m2/day, or one millionth of a gram per square meter per day, which surpasses the requirements for flexible organic device substrates. The barrier film also has a lag time of more than 2300 hours at 60∞C and 90% RH (i.e. the time required for moisture to pass through the barrier film under those conditions). These plastic barrier properties were tested and validated by the Centre for Process Innovation, UK.

"With a level of protection that surpasses the ideal requirements for such films to date, manufacturers now have the opportunity to extend the lifetime of plastic electronic devices by leaps and bounds!", says Senthil Ramadas, principal investigator of the project.

Research that offers total solutions:

A stumbling block in developing ultra-high barrier substrates has been the availability of an appropriate testing methodology. Overcoming this hurdle, the IMRE project team has developed a highly sensitive moisture and oxygen permeation measurement system in tandem with the development of the film which is able to effectively measure permeation of less than 10-8g/m2/day. This system has been successfully implemented in a number of service based industry projects.

Adds Senthil, ìTogether with our expertise in encapsulation processes and permeation measurement technologies we are also able to provide a total solution package for industries such as flexible solar cells and OLED displays producersî.

The Next Step:

Recognising the potential of the high performance substrate technology, Exploit Technologies Pte Ltd (ETPL), the commercialisation arm of A*STAR, has funded the team through a ëflagship projectí that seeks out research with excellent commercialisation potential.

Boon Swan Foo, the Executive Chairman of ETPL said, "Exploit Technologies sees commercial potential in A*STAR IMRE's breakthrough barrier film technology. It has excellent promise for enabling the fast growing plastic electronics industry. We want to take this technology from the lab to the market."

"The research team is already in talks with solar cells and flexible displays and lighting industry manufacturers who are currently evaluating the barrier films for product qualification", says Dr. Mark Auch, a member of the IMRE team who is actively involved in the commercialization of the technology.

IMRE has already signed agreements with a number of companies to advance the technology into the commercial domain. This includes a collaboration agreement with G24Innovations, a thin film solar cell manufacturer to look into developing the films for use in solar cells.

Clemens Betzel, the president of G24Innovations, who was in Singapore for the signing of the cooperation agreement, said, "The cutting edge work of IMRE's Barrier Substrates is likely to mean significant progress for Dye Sensitized Solar Cells, as exclusively manufactured today by G24I. We are looking forward to broadening our relationship with IMRE in the coming months."

IMRE has also signed a commercialisation agreement with KISCO (Asia), a subsidiary of the Japanese parent company KISCO Ltd., to commercialise and market the barrier films in the Asia Pacific region.

"We have a long-standing research relationship with IMRE and are very familiar with their work. We have high confidence in the quality of IMREís barrier films and we believe, that this partnership will be beneficial to both parties," says Albin Tan, General Manager of KISCO (Asia), Singapore.

more about IMREís Barrier Film Technology:

Current barriers have a series of alternating polymer and metal oxide layers that make up the plastic. This staggers adjacent 'pinholes', natural defects in the layers, thus slowing the passage of moisture and air through the ëpinholesí.

The secret behind the effectiveness of IMRE's technology lies in the unique barrier stack design, where nanoparticles are used when layering the barrier films. The design has a special layer of nanoparticles between the 'pinhole' oxide layers. The innovativeness becomes clear as the nanoparticles ìplugî the gaps and cracks in the oxide layer thus making for a more impermeable layer. In addition to sealing of oxide barrier film's defects, the nanoparticles absorb and retain the water and oxygen molecules. This concept helps reduce the number of barrier stacks to two or three only.

IMRE has successfully resolved the 'pore effect issue' in multi-layered barrier stacks and developed ultra high barrier plastic substrates (barrier properties < 10-6 g/m2/day) for high barrier applications. Our calcium test results show that there is no calcium oxidation up to 2300hrs at 60∞C and 90% relative humidity.

####

About Singapore A*STAR
The Agency for Science, Technology and Research (A*STAR) is Singapore's national agency for science and technology, supporting the development of industry clusters. Its mission is to foster world-class scientific research and talent for a vibrant knowledge-based Singapore. The Agency comprises the Biomedical Research Council, the Science and Engineering Research Council, A*STAR Graduate Academy, Policy and Personnel, and Corporate Planning and Administration Divisions, and a commercialisation arm, Exploit Technologies Pte Ltd. The two research councils fund and oversee 12 public research institutes engaged in cutting edge research in the physical sciences, engineering and biomedical sciences. These institutes build up intellectual capital and train research talent to deepen Singapore's scientific capabilities. (Website: www.a-star.edu.sg)

A*STAR's Science and Engineering Research Council (SERC) promotes public sector research and development in Science and Engineering with a focus on fields essential to Singapore's manufacturing industry especially electronics, infocomms, chemicals and precision engineering. SERC's objectives are to develop a foundation of high quality research in key disciplines; to nurture human capital for research; and to promote information dissemination and technology transfer. (Website: www.a-star.edu.sg/science_and_engineering/5-Science-Engineering)

KISCO (Asia) Pte. Ltd.:
KISCO Ltd., with many years of experience, is specialized in raw materials and equipment for LCDs and PDPs. We extend our wide network coverage over Asia Pacific, Europe as well as USA, integrating information, technology, and materials to create solution kits for customization.
(Website: www.kisco-net.com.sg)

G24Innovations (G24I):
G24i is a UK company that is personalising solar for the global community. It is the world's first company to produce commercial grade Dye-Sensitised Thin Film solar cells.Dye-Sensitised Thin Film cells do not contain silicon, are extremely lightweight and durable and produce electricity in low-light and even indoor conditions. Combined with the fact that G24i's proprietary roll-to-roll manufacturing process accommodates large volume production, G24i believes that the technology makes solar a viable and affordable energy option for a range of new geographies and industries.G24i's production facility is located in Cardiff, Wales with an initial 30 MW capacity. For more information, please visit: www.g24i.com

Institute of Materials Research and Engineering (IMRE):
The Institute of Materials Research and Engineering (IMRE) is a state-of-the-art materials research institute of the Agency for Science, Technology and Research (A*STAR). Its mission is to create materials knowledge, develop human capital and transform technology through our innovative research. IMRE undertakes researches in selected fields of materials science and engineering, including optoelectronics, nonmaterial, chemicals and polymers. IMRE's innovations and discoveries are constantly being explored to further the applications of advanced materials and processes. (Website: www.imre.a-star.edu.sg)

Exploit Technologies Pte Ltd (ETPL):
Exploit Technologies is the strategic marketing and commercialisation arm of the Agency for Science, Technology and Research (A*STAR). Its mission is to support A*STAR in transforming the economy through commercialising R&D. Exploit Technologies enhances the research output of A*STAR scientists by translating their inventions into marketable products or processes. Through licensing deals and spin-offs with industry partners, Exploit Technologies is a key driver of technology transfer in Singapore. It actively engages industry leaders and players to commercialise A*STAR's technologies and capabilities, bridging the gap from Mind to Market. Exploit Technologiesí charter is to identify, protect and exploit promising intellectual property (IP) created by A*STARís research institutes. For more information, please visit http://www.exploit-tech.com

For more information, please click here

Contacts:
Singapore: Eugene Low
Corporate Communications Department
Institute of Materials Research and Engineering (IMRE)

DID +65 6874 8491
Mobile +65 9769 1026
Email

U.S.: Cathy Yarbrough
858-243-1814

Copyright © A*STAR

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Global Nano-Enabled Packaging Market For Food and Beverages Will Reach $15.0 billion in 2020 May 26th, 2015

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Display technology/LEDs/SS Lighting/OLEDs

Statement by QD Vision regarding European Parliament’s Vote on Cadmium-Based Quantum Dots May 20th, 2015

Thin films

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Defects can 'Hulk-up' materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015

Efficiency record for black silicon solar cells jumps to 22.1 percent: Aalto University's researchers improved their previous record by over 3 absolute percents in cooperation with Universitat Politècnica de Catalunya May 18th, 2015

Science and Technology of Advanced Materials (STAM): Reported successes and failures aid hot pursuit of superconductivity May 15th, 2015

Sensors

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Record high sensitive Graphene Hall sensors May 21st, 2015

Graphene enables tunable microwave antenna May 15th, 2015

Janusz Bryzek Joins MEMS Industry Group to Lead New TSensors Division - New Division will Focus on Accelerating Development of Emerging Ultra-high Volume Sensors Supporting Abundance, mHealth and IoT May 14th, 2015

Discoveries

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

Researchers find the 'key' to quantum network solution May 25th, 2015

One step closer to a single-molecule device: Columbia Engineering researchers first to create a single-molecule diode -- the ultimate in miniaturization for electronic devices -- with potential for real-world applications May 25th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Materials/Metamaterials

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Engineering Phase Changes in Nanoparticle Arrays: Scientists alter attractive and repulsive forces between DNA-linked particles to make dynamic, phase-shifting forms of nanomaterials May 25th, 2015

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Announcements

Global Nano-Enabled Packaging Market For Food and Beverages Will Reach $15.0 billion in 2020 May 26th, 2015

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Solar/Photovoltaic

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

Efficiency record for black silicon solar cells jumps to 22.1 percent: Aalto University's researchers improved their previous record by over 3 absolute percents in cooperation with Universitat Politècnica de Catalunya May 18th, 2015

Wearables may get boost from boron-infused graphene: Rice U. researchers flex muscle of laser-written microsupercapacitors May 18th, 2015

Random nanowire configurations increase conductivity over heavily ordered configurations May 16th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project