Graphene Translucency and Interfacial Interactions in the Gold/Graphene/SiC System

被引：25

作者：

Caccia, Mario ^{[1
,2
]}

Giuranno, Donatella ^{[3
]}

Molina-Jorda, Jose M. ^{[1
,2
]}

Moral, Monica ^{[4
]}

Nowak, Rafal ^{[5
]}

Ricci, Enrica ^{[3
]}

Sobczak, Natalie ^{[5
]}

Narciso, Javier ^{[1
,2
]}

Ferrindez Sanz, Javier ^{[4
]}

机构：

[1] Univ Alicante, Dept Quim Inorgan, Alicante 03690, Spain

[2] Univ Alicante, Inst Univ Mat Alicante, Alicante 03690, Spain

[3] Natl Res Council CNR, Inst Condensed Matter Chem & Energy Technol ICMAT, I-16149 Genoa, Italy

[4] Univ Seville, Dept Quim Fis, Seville 41004, Spain

[5] Foundry Res Inst, PL-30418 Krakow, Poland

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2018年 / 9卷 / 14期

关键词：

TOTAL-ENERGY CALCULATIONS; ATOMIC-STRUCTURE; BUFFER LAYER; WAVE; SIC(0001); AU;

D O I：

10.1021/acs.jpclett.8b01384

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Integration of graphene into electronic circuits through its joining with conventional metal electrodes (i.e., gold) appears to be one of the main technological challenges nowadays. To gain insight into this junction, we have studied the physicochemical interactions between SiC-supported graphene and a drop of molten gold. Using appropriate high-temperature experimental conditions, we perform wetting experiments and determine contact angles for gold drops supported on graphene epitaxially grown on 4H-SiC. The properties of the metal/graphene interface are analyzed using a wide variety of characterization techniques, along with computational simulations based on density functional theory. In contrast with the established literature, our outcomes clearly show that graphene is translucent in the gold/graphene/SiC interface, and therefore its integration into electronic circuits primarily depends on the right choice of the support to produce favorable wetting interactions with liquid gold.

引用

页码：3850 / 3855

页数：11

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