Novel memory device can be written on and read out optically or electrically

ScienceDaily | 11/25/2019 | Staff
shankayshankay (Posted by) Level 3
Another novelty was related to the measurements in the test series: They were carried out exclusively using the innovative "SweepMe!" measuring software, which was developed by an IAPP / cfaed start-up of the same name.

This story began a few way back in 2015. Two cfaed scientists, both experts in the field of organic electronics, were on their way to a conference in Brazil which included a long bus ride to the venue Porto de Galinhas. Plenty of time to talk. And so it happens that one of the two -- Prof. Stefan Mannsfeld (Chair of Organic Devices, cfaed / IAPP) -- shared the idea with the other one -- Dr. Axel Fischer (Chair of Organic Semiconductors, IAPP) -- that had kept him busy for a while already:

Combination - Diode - OLEDs - Insulator - Layer

The combination of a conventional organic light-emitting diode (OLEDs) with an insulator layer would have to result in a storage unit due to the specific physical effects of the materials used, which could be written on and read out using both light and electrical signals: a misappropriated use of the OLED technology so to speak. As it turned out, the two were a perfect match -- Dr. Fischer confirmed that the necessary technologies and experience were already available at the IAPP -- and so the investigation of this idea was only a matter of time. Yichu Zheng at Prof. Mannsfeld's chair was a suitable candidate to dedicate her doctoral thesis to this topic.

The results of this work are available now and have just been published in the journal Advanced Functional Materials. The scientists describe a new type of programmable organic capacitive memory, which is a combination of an OLED and a MOS capacitor (MOS = metal oxide semiconductor). The storage unit called "pinMOS" is a non-volatile memcapacitor with high repeatability...
(Excerpt) Read more at: ScienceDaily
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