CEA-Leti team achieves micro-OLED comms record
French team achieves bandwidth of 450 MHz and a transmission throughput of almost 3GB/sec
CEA-Leti researchers have achieved two world records in terms of micro-OLED performance, opening the way to wider real-life applications.
These were a bandwidth of 450 MHz and a transmission throughput of almost 3GB/sec, which is more than twice the previous record established in 2020.
The results were published in IEEE Photonics Technology Letters in the paper '2.85-Gb/s Organic Light Communication With a 459-MHz Micro-OLED.'
To create a micro-OLED that meets the need for a GB/sec transmission data rate, the researchers had to find the best compromise between speed, light performance and size of the optical device. This required designing an innovative stack of organic layers that would improve light emissions while reducing the size of the Micro-OLED to 40 µm.
“To achieve this innovative solution, we had to evaporate seven layers of various organic materials while precisely controlling how they fit together and stack. This requires a particularly precise use of a stencil and a highly controlled set of steps to encapsulate the layers in the final stages of the process," explains Christelle Laugier, lab yechnician at CEA-Leti.
“Demand for Micro-LEDs has grown enormously across industries that rely on efficient, high-performing display and communication systems. Organic LEDs offer a promising path to diversify CEA-Leti's portfolio and ensure sovereignty in years to come," commented Vygintas Jankus, OLED and MicroLED business developer at CEA-Leti.
References
M. N. Munshi et al; IEEE Photonics Technology Letters, vol. 35, no. 24, 15 Dec.15, 2023
