I-Micronews, EETimes-Europe, EETimes-Confidential: Isorg, a 2010 spinoff of France’s CEA-Grenoble Nanomaterials Laboratory (CEA - Commissariat à l’énergie atomique), is working on large-area photodetectors and image sensors in printed and organic electronics. The name of ISORG is the abbreviation of Image Sensor ORGanic. Although spun off from CEA, the two retain close ties and, in fact, a strategic partnership. The lab works on technology development, while Isorg’s role is to develop it a product and produce it in high volumes.
The Isorg's organic photo detector is based on a photodiode device structure. A high EQE (External Quantum Efficiency) is obtained by blending two organic semiconductors, a p type and an n type, sandwiched between two electrodes. Excitons generated by photons are separated into electrons and holes to create an electric current that can be measured for signal processing. Isorg's home page has a nice video showing the structure of its sensor. The layers are just printed, no need in vacuum processing like in OLED.
Currently, only passive pixels may be designed, so Isorg is working on several industrial and consumer applications where passive pixels are enough. But CEA Liten (Laboratoire d’Innovation pour les Technologies des Energies Nouvelles) and Isorg are working on a hybrid structure combining organic photo detectors with organic thin film transistors, which may be available for prototyping within a year.
Isorg’s Class 10,000, 450 m2 cleanroom fab is dedicated to developing printing techniques for organic electronics on plastic and glass substrates. The company’s plans are for this fab to be able to produce thousands of 320x380 mm foils or glass plates by 2013. The manufacturing pilot line to become operational in small volumes by Q3 2012, with full automation and large-volume production slated for 2014.
Series A funding round is planned for this year. The size and source of the round will depend on how work progresses with early customers.