Journal
NANO LETTERS
Volume 15, Issue 6, Pages 4206-4213Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b01531
Keywords
Flexible transparent electrode; metal nanowires; graphene; roll-to-roll encapsulation
Categories
Funding
- National Basic Research Program of China [2014CB932500, 2011CB921904, 2013CB932603]
- National Natural Science Foundation of China [21173004, 21222303, 51121091, 51362029]
- National Program for Support of Top-Notch Young Professionals
- Beijing Municipal Science & Technology Commission [Z131100003213016]
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Tranparent conductive film on plastic substrate is a critical component in low-cost, flexible, and lightweight optoelectronics. Industrial-scale manufacturing of high-performance transparent conductive flexible plastic is needed to enable wide-ranging applications. Here, we demonstrate a continuous roll-to-roll (R2R) production of transparent conductive flexible plastic based on a metal nanowire network fully encapsulated between graphene monolayer and plastic substrate. Large-area graphene filth grown on Cu foil via a R2R chemical vapor deposition process was hot-laminated onto nanowires precoated EVA/PET film, followed by a R2R electrochemical delamination that preserves the Cu foil for reuse. The encapsulated structure minimized the resistance of both wire-to-wire junctions and graphene grain boundaries and strengthened adhesion of nanowires and graphene to plastic substrate, resulting, in superior optoelectronic properties (sheet resistance of similar to 8 Omega sq(-1) at 94% transmittance), remarkable corrosion resistance, and excellent mechanical flexibility. With these advantages, long-cycle life flexible electrochromic devices are demonstrated, showing up to 10000 cycles.
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