Ultrafast Laser Pulses Enable One-Step Graphene Patterning on Woods and Leaves for Green Electronics
- Ultrafast Laser Pulses Enable One-Step Graphene Patterning on Woods and Leaves for Green Electronics
- 박상백; Jianing An; Truong-Son Dinh Le; Pooi See Lee; 김영진
- biocompatible and biodegradable devices; flexible green electronics; laser-induced graphene; single-step fabrication
- Issue Date
- Advanced functional materials
- VOL 29, NO 33, 1902771
- Fast, simple, cost-efficient, eco-friendly, and design-flexible patterning of highquality graphene from abundant natural resources is of immense interest for the mass production of next-generation graphene-based green electronics. Most electronic components have been manufactured by repetitive photolithography processes involving a large number of masks, photoresists, and toxic etchants; resulting in slow, complex, expensive, less-flexible, and often corrosive electronics manufacturing processes to date. Here, a one-step formation and patterning of highly conductive graphene on natural woods and leaves by programmable irradiation of ultrafast high-photon-energy laser pulses in ambient air is presented. Direct photoconversion of woods and leaves into graphene is realized at a low temperature by intense ultrafast light pulses with controlled fluences. Green graphene electronic components of electrical interconnects, flexible temperature sensors, and energy-storing pseudocapacitors are fabricated from woods and leaves. This direct graphene synthesis is a breakthrough toward biocompatible, biodegradable, and ecofriendlily manufactured green electronics for the sustainable earth.
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