Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Organic photodiodes – more economical detectors for the NIR region

05.09.2017

The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP will be introducing a new generation of organic photodiodes on silicon substrates (OPD-on-silicon) during the SEMI European Imaging & Sensors Summit 2017, September 20-22 in Grenoble, France, at MINATEC, Booth 42.

Optical sensors are pervasive. Domestic life as well as the industrial environment are hard to imagine without them. For example, digital cameras using CMOS detectors have been indispensable vacation companions for many years, while in industry they serve as a simple and economical solution for automated image processing (such as in quality control applications, remote presence and position recognition and counting in conveyor systems, and object recognition in warehousing logistics).


Image sensor based on organic photodiodes on silicon in typical camera application. Background: NIR image.

© Fraunhofer FEP, Photographer: Jürgen Lösel; Picture in printable resolution: www.fep.fraunhofer.de/press

They can also be employed in medical engineering for diagnostic image processing. There are many future applications in the field of autonomous vehicles that are already foreseeable today.

Conventional silicon-based CMOS imagers are limited to a restricted wavelength region for fundamental technological reasons. They are usually set to the visible segment of the spectrum. If you want to detect light in the near-infrared (NIR), however, hybrid solutions such as combinations of indium gallium arsenide (InGaAs) with CMOS are usually resorted to.

Nevertheless, the manufacture of these kinds of hybrid solutions is considerably more costly and more prone to defects than fabrication using standard CMOS processes. This is where organic photodiodes offer an alternative. The organic layers can be integrated simply at wafer level and are therefore economical. Simultaneously, they also may have high sensitivity outside the visible wavelength region, depending on the system of materials selected.

The Fraunhofer FEP has extensive experience in integrating organic layers on CMOS wafers. Diverse OLED microdisplays (high-resolution, low power, embedded image sensors, ...) as well as sensors for fingerprint, flow, and photoelectric sensing applications have already been developed and fabricated.

“We will be debuting an organic photodiode array with SVGA resolution at SEMI European Imaging & Sensors Summit 2017. That means 800 × 600 pixels available for detection applications”, explains Philipp Wartenberg, head of the IC and System Design department at Fraunhofer FEP.

“We have demonstrated that it is fundamentally feasible to fabricate a high-resolution organic photodiode matrix at this order of magnitude. It is sensitive at wavelengths up to 1,000 nanometers. We are able to develop customer- and application-specific organic photodiodes with optimized properties for the concrete application through appropriate adaption of material.”

The demonstrated image sensors were fabricated completely at wafer-level and therefore already under near-production conditions. With its extended region of sensitivity, the imager can be employed over the entire bandwidth of conventional applications in industry, automobiles, and medicine. They could be used for quality control of foodstuffs, as fingerprint sensors, and in biomedical tests, for example.

The scientists are now making the new technology available to industrial partners in order to jointly develop and produce optimized organic photodiodes and arrays as image sensors for their respective applications.

Fraunhofer FEP during SEMI European Imaging & Sensors Summit 2017:
Booth 42
Conference presentation:
Thursday, September 21, 2017, Session 2: Present and Future Imaging Application
“CMOS-based microdisplays, imager, and sensors enhanced by OLED/OPD integration”
Philipp Wartenberg, Fraunhofer FEP

Press contact:

Mrs. Annett Arnold

Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP
Phone +49 351 2586 333 | presse@fep.fraunhofer.de
Winterbergstraße 28 | 01277 Dresden | Germany | www.fep.fraunhofer.de

Weitere Informationen:

http://s.fhg.de/5j9

Franziska Lehmann | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

More articles from Trade Fair News:

nachricht Fraunhofer HHI presents latest VR and 5G technologies at Mobile World Congress
19.02.2018 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI

nachricht Come Together: Teamwork Achieves Optimum Composite Design
14.02.2018 | Fraunhofer-Institut für Lasertechnik ILT

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Contacting the molecular world through graphene nanoribbons

19.02.2018 | Materials Sciences

When Proteins Shake Hands

19.02.2018 | Materials Sciences

Cells communicate in a dynamic code

19.02.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>