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New organic material unlocks faster and more flexible electronic devices

Schematic diagram showing the orientation and alignment of atomically thin 2D layered pentacene samples in "Supertransport of excitons in atomically thin organic semiconductors at the 2D quantum limit" @ Light: Science & Applications, a Nature journal

Mobile phones and other electronic devices made from an organic material that is thin, bendable and more powerful are now a step closer thanks to new research led by scientists at The Australian University (ANU).

Lead researchers Dr Ankur Sharma and Associate Professor Larry Lu say it would help create the next generation of ultra-fast electronic chips, which promise to be much faster than current electronic chips we use.

"Conventional devices run on electricity - but this material allows us to use light or photons, which travels much faster," Dr Sharma said.

"The interesting properties we have observed in this material make it a contender for super-fast electronic processors and chips.

"We now have the perfect building block, to achieve flexible next generation electronics."

Associate Professor Lu said they observed interesting functions and capabilities in their organic material, previously unseen.

"The capabilities we observed in this material that can help us achieve ultra-fast electronic devices," said Associate Professor Lu.

The team were able to control the growth of a novel organic semiconductor material - stacking one molecule precisely over the other.

"The material is just one carbon atom thick, a hundred times thinner than a human hair, which gives it the flexibility to be bent into any shape. This will lead to its application in flexible electronic devices."

In 2018 the same team developed a material that combined both organic and inorganic elements.

Now, they've been able to improve the organic part of the material, allowing them to completely remove the inorganic component.

"It's made from just carbon and hydrogen, which would mean devices can be biodegradable or easily recyclable, thus avoiding the tonnes of e-waste generated by current generation electronic devices," Dr Sharma said.

Dr Sharma says while the actual devices might still be some way off, this new study is an important next step, and a key demonstration of this new material's immense capabilities.

Supertransport of excitons in atomically thin organic semiconductors at the 2D quantum limit

Ankur Sharma, Linglong Zhang, Jonathan O. Tollerud, Miheng Dong, Yi Zhu, Robert Halbich, Tobias Vogl, Kun Liang, Hieu T. Nguyen, Fan Wang, Shilpa Sanwlani, Stuart K. Earl, Daniel Macdonald, Ping Koy Lam, Jeffrey A. Davis & Yuerui Lu

Light: Science & Applications volume 9, Article number: 116 (2020)

DOI: 10.1038/s41377-020-00347-y

Contact information:

Ankur Sharma

Lecturer at ANU Research School of Energy, Electrical and Materials Engineering

Phone: +(61) 2 61253762

Yuerui (Larry) Lu

Associate Professor at ANU College of Engineering and Computer Science

Phone: +(61) 2 61259582

Australian National University (ANU)

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