• 专利标题:   Producing graphene based transparent conductive electrode used in e.g. display devices, comprises heating modified substrate and feeder, contacting vapors of seedlac with substrate, cooling substrate to obtain coat of graphene on substrate.
  • 专利号:   WO2018229561-A1, IN201721021005-A
  • 发明人:   CHOUDHARY S K, DAS S, KULKARNI G U R, PUJAR R N
  • 专利权人:   TATA STEEL LTD, CENT NANO SOFT MATTER SCI, TATA STEEL LTD, CENT NANO SOFT MATTER SCI
  • 国际专利分类:   H01L031/0224, H01M004/133, C01B032/184, G06F012/00
  • 专利详细信息:   WO2018229561-A1 20 Dec 2018 H01L-031/0224 201904 Pages: 48 English
  • 申请详细信息:   WO2018229561-A1 WOIB051966 23 Mar 2018
  • 优先权号:   IN21021005

▎ 摘  要

NOVELTY - Producing graphene based transparent conductive electrode (TCE) comprises heating a modified substrate or non-modified substrate and at least one feeder, contacting vapors of seedlac with the modified substrate or the non-modified substrate, cooling the modified substrate to obtain a coat of graphene on the modified substrate, thus producing graphene based TCE, or cooling the non-modified substrate to obtain a coat of graphene on the non- modified substrate, followed by coating the graphene coated non-modified substrate with metal precursor, and washing the graphene coated non-modified substrate to produce graphene based TCE. USE - The process is useful for producing graphene based transparent conductive electrode (claimed) which is useful in display devices and touch screens solar cell. ADVANTAGE - The process: provides graphene based transparent conductive electrode (TCE) which has a transmission of 60-85%, sheet resistance of 1-100 Omega /sq, and contact angle of 91-92 degrees , and corrosion rate of 3.331x 1013 m/second (claimed); is simple and easily adapted to coat any substrate without any limitation; does not employ any hazardous chemicals, hence is an environmental friendly process; does not employ complicated lithography steps of using expansive mask for template or applying photoresist and electron beam for template formation, as conventional lithography processes are cumbersome and expensive; can coat graphene on the curved surfaces for the preparation of graphene based TCE, unlike the processes known in the prior art; is commercially viable and economical; and provides the electrode having large area metal network with reduced non-uniformity of conducting film, visible transparency and low or reduced sheet resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the graphene based TCE produced by the process.