碳材料鍍銀之方法Method for decoration of silver onto carbon materials

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/780,788

專利證號

US 9,023,250 B2

專利獲證名稱

碳材料鍍銀之方法Method for decoration of silver onto carbon materials

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2015/05/05

技術說明

本專利申請案是在少壁奈米碳管及石墨烯薄片上鍍奈米銀，之後將此鍍有按米銀的奈米碳材料加到PEDOT:PSS導電膠中，以製備高光電特性的可撓性透明導電膜。粒徑大小約為5奈米的奈米銀顆粒均勻的鍍在奈米碳材料上，在還原過程中可做為電子的受體，因而可以增加導電膠及奈米碳材料的電洞濃度，因而提升導電膜的導電特性。另外，蕭基勢壘(Schottky Barrier)也會因為鍍銀的奈米碳材料功函數提升而降低。以此製程所得的可撓性透明導電膜具有79.73%的透光率及50.3 ohm/sq的導電性。 This work demonstrates a fast process for decorating silver (Ag) nanoparticles onto the functionalized few-walled carbon nanotubes (f-FWCNTs) and graphene nanosheets (f-GNs). The Ag-coated carbon nanomaterials were used as fillers which mixed with PEDOT:PSS for preparing high optoelectronic performances of transparent conductive films (TCFs). The Ag nanoparticles with a particle size of approximate 5 nm were uniformly distributed on the surfaces of the f-FWCNTs (Ag@f-FWCNTs) and the f-GNs (Ag@f-GNs). The Ag ions play the role of electron acceptors during the reduction process, which increases the hole concentrations in PEDOT:PSS, f-FWCNTs, and f-GNs, therefore enhancing the electrical conductivity of the TCFs. Using the method, a flexible transparent conductive film with a sheet resistance of 50.3 ohm/sq and a transmittance of 79.73% at a wavelength of 550 nm were achieved.

備註

本會(收文號1110060946)同意該校111年9月29日清智財字第1119007219號函申請終止維護專利(國立清華大學)

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