Info
Info
News Article

Printed Organic Electronics Review Wins Best Paper Award.

News

Researchers at Sumitomo Chemical describe some of the key developments in printed organic devices over the years and their thoughts on winning the award.

While the world of electronic devices was radically different 30 years ago when Sumitomo Chemical (SC) began developing printed electronics technology, the company had already felt it was an area where they could make a significant contribution. Drawing on the company's decades of expertise in this field, Chizu Sekine, a researcher at SC, and colleagues prepared a review of the progress made in applying printed electronics to organic devices. The review has been referenced by several other papers since it was published in the journal Science and Technology of Advanced Materials in 2014, and this year it won the journal's best paper award.

"I think that the strong demand from the IoT or Trillion sensor network society is attracting us towards the development of printed electronics technology," says Chizu. "The key demands of these applications are (1) on-demand fabrication of various designs and (2) low manufacturing cost - printed electronics can give a solution to both these demands."

The review focuses on organic LEDs (OLEDs) and organic photovoltaic devices (OPV), which as Chizu explains provide useful examples of the state of the field. The review covers several milestones that have presented a gear change in the performance of these devices, such as the efficiencies achieved, and the ease of printing them. While Chizu suggests that materials development will be key to future progress, she adds that no single technology alone will lead to the commercialization of practical products. "I think that hybrid technology will be the most significant in future development."

On hearing of the award Chizu was surprised and pleased as the review had attracted more interest than at first expected. She says, "This is a good opportunity to empower our research group to win the challenge of organic printed electronics development over our competitors."

Background organic electronics

Organic compounds are a class of chemicals that contain carbon, with the exclusion of carbides, carbonates, cyanides and pure oxides of carbon. These include small carbon-based molecules as well as polymers. While most conducting materials are inorganic, the discovery of a number of semiconducting and conducting polymers in the 1950s and 1960s opened up the potential to develop organic electronic devices.

Organic materials tend to be cheaper than their inorganic counterparts, and have lower processing temperatures, which makes organic electronic devices less expensive to produce. They can also be flexible which has benefits for both the applications they can be used in and further reducing fabrication costs.

OLEDs

Electroluminescence "“ the emission of light in response to an applied voltage "“ was first demonstrated in a polymer by a group in Cambridge in 1989, and a similar phenomenon was observed almost simultaneously by researchers at Sumitomo Chemical. While at the time the external quantum efficiency of the emitted light was very low "“ around 0.1 percent - it inspired decades worth of research to develop organic OLED devices that could exploit the phenomenon more efficiently.

Today OLEDs can be produced in red, green, blue and white, and external quantum efficiencies of 5-10 percent have been achieved with device lifetimes that range up to several tens of thousands of hours. The fine image-quality, and ultrathin, and light-weight features of OLEDs have already led to their uptake by Samsung in the Galaxy range, although so far these are produced by an evaporation process.

OPV

Organic photovoltaic devices have the reverse working mechanism to OLEDs, producing an electric potential difference from incident light. This can be used for energy harvesting or sensing. Like OLEDs the use of organic materials means that devices can be made thinner and more lightweight, with lower fabrication temperatures.

Printed electronics

Evaporation deposition currently dominates organic electronic device fabrication. While the low temperature processing requirements for these materials allows some cost savings, printing fabrication techniques could allow further cost savings, particularly in scaled up production. Roll-to-roll printing allows significant cost and production efficiencies, but is only suitable for flexible materials, a requirement that is readily met by organic materials.

The increasing ubiquity of electronics has raised interest in techniques that allow on-demand fabrication of various designs and low manufacturing costs. Printed organic electronics meets these demands. Polymer OLED materials are already soluble and progress is being made towards making small organic molecules soluble with the introduction or replacement of substituent groups.



AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS
Tescan And 3D-Micromac Collaborate To Increase The Efficiency Of Failure Analysis Workflows
ITRI And DuPont Inaugurate Semiconductor Materials Lab
DISCO's Completion Of New Building At Nagano Works Chino Plant
Belgian Initiative For AI Lung Scan Analysis In Fight Against COVID-19 Goes European
Panasonic Microelectronics Web Seminar
ASML Reports €14.0 Billion Net Sales
New Plant To Manufacture Graphene Electronics
GOODFELLOW Confirms Membership In The BSI UK Graphene Group
Onto Innovation Announces New Inspection Platform
U.S. Department Of Defense Partners With GLOBALFOUNDRIES To Manufacture Secure Chips At Fab 8
TEL Introduces Episode UL As The Next Generation Etch Platform
Can New Advances In CMOS Replace SCMOS Sensors In Biomedical Applications?
Obducat Receives Order For Fully Automated Resist Processing Tool From A Customer In Asia
Siemens And ASE Enable Next-generation High Density Advanced Package Designs
EV Group Establishes State-of-the-art Customer Training Facility
Tower Semiconductor Announced Program Creating An Integrated-Laser-on-Silicon Photonics Foundry Process
South Korean Point Engineering Chooses ClassOne’s Solstice S8 For Advanced Semiconductor Plating
SUSS MicroTec Opens New Production Facility In Taiwan
Will Future Soldiers Be Made Of Semiconductor?
Imec Demonstrates 20nm Pitch Line/Space Resist Imaging With High-NA EUV Interference Lithography
K-Space Offers A New Accessory For Their In Situ Metrology Tools
AP&S Expands Management At Beginning Of 2021
Changes In The Management Board Of 3D-Micromac AG
Cadence Announces $5M Endowment To Advance Research

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the Silicon Semiconductor Magazine, the Silicon Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification} Array
Live Event