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Researchers Make Perovskite Optical Transmitter And Receiver

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Bidirectional optical signal transmission between two identical devices using perovskite diodes

Researchers at Linköping University, together with colleagues in China, have developed a perovskite diode that can be directed in two directions: it can receive optical signals and it can just as easily transmit them. The results have been published in Nature Electronics.

In 2018, Chunxiong Bao, a postdoc at Linköping, discovered the correct perovskite to build a photodetector showing higher performance and longer lifetime, and described this in an article in Advanced Materials. The development of LEDs from perovskites has also made rapid progress. Weidong Xu, postdoc at Linköping University, developed a perovskite LED with an efficiency of 21 percent last year, which is among the best in the world, and published the results in Nature Photonics.

"In order to demonstrate the potential of our diode with double function, we have built a monolithic sensor that detects heart beats in real time, and an optical, bidirectional communication system", says Bao.

"We have managed to integrate optical signal transmission and reception into one circuit, something that makes it possible to transmit optical signals in both directions between two identical circuits. This is valuable in the field of miniaturised and integrated optoelectronics", says Feng Gao, one of the collaborating scientists.

'Bidirectional optical signal transmission between two identical devices using perovskite diodes' by Chunxiong Bao et al; Nature Electronics 2020

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