Synthesis of conducting transparent few-layer graphene directly on glass at 450 °C.
Chang-Seok Lee,Costel Sorin Cojocaru,Waleed Moujahid,Bérengère Lebental,Marc Chaigneau,Marc Châtelet,François Le Normand,Jean-Luc Maurice +7 more
TLDR
This work demonstrates the large-area formation of continuous transparent graphene layers at temperatures as low as 450 °C using a plasma-enhanced chemical vapour deposition process, and measures the optical transmittance of the layers without any transfer.Abstract:
Post-growth transfer and high growth temperature are two major hurdles that research has to overcome to get graphene out of research laboratories. Here, using a plasma-enhanced chemical vapour deposition process, we demonstrate the large-area formation of continuous transparent graphene layers at temperatures as low as 450 °C. Our few-layer graphene grows at the interface between a pre-deposited 200 nm Ni catalytic film and an insulating glass substrate. After nickel etching, we are able to measure the optical transmittance of the layers without any transfer. We also measure their sheet resistance directly and after inkjet printing of electrical contacts: sheet resistance is locally as low as 500 Ω sq-1. Finally the samples equipped with printed contacts appear to be efficient humidity sensors.read more
Citations
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Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics
Claire Berger,Zhimin Song,Tianbo Li,Xuebin Li,Asmerom Ogbazghi,R. Feng,Zhenting Dai,Alexei Marchenkov,Edward H. Conrad,Phillip N. First,Walt A. de Heer +10 more
TL;DR: In this article, an ultrathin epitaxial graphite graphite (NPEG) was grown by thermal decomposition on the (0001) surface of 6H-SiC and characterized by surface-science techniques.
Journal ArticleDOI
Copper nanowire-graphene core-shell nanostructure for highly stable transparent conducting electrodes.
TL;DR: It is anticipated that the CuNW-G core-shell nanostructure can be used as an alternative to conventional TCE materials for emerging optoelectronic devices such as flexible solar cells, displays, and touch panels.
Journal ArticleDOI
Direct Growth of Ultrafast Transparent Single‐Layer Graphene Defoggers
Lifang Tan,Mengqi Zeng,Qiong Wu,Linfeng Chen,Jiao Wang,Tao Zhang,Jürgen Eckert,Mark H. Rümmeli,Lei Fu +8 more
TL;DR: The direct growth of large-area and continuous graphene films on quartz is reported, and the first practical single-layer graphene defogger is fabricated, which can completely remove fog within 6 s when supplied a safe voltage of 32 V.
Journal ArticleDOI
Graphene-based humidity sensors: the origin of alternating resistance change.
TL;DR: Analysis of the resistance changes due to water molecule adsorption on the graphene or multi-layer graphene (MLG) surface is performed and revealed possible increase, decrease and non-monotonous behavior of resistance with changes in film structure.
Journal ArticleDOI
Few layer graphene synthesis on transition metal ferrite catalysts
Revathi Bacsa,Ignacio Cameán,Alberto Ramos,Ana B. García,Victoria Tishkova,Wolfgang Bacsa,James R. Gallagher,Jeffrey T. Miller,Hugo Navas,Vincent Jourdain,Maria Girleanu,Ovidiu Ersen,Philippe Serp +12 more
TL;DR: In this paper, a large scale substrate-free fluidized bed catalytic chemical vapour deposition (FB-CCVD) process for few layer graphene powder production was proposed, which uses a crystalline oxide catalyst of the general formula AxB3−xO4, wherein the FLG layer thickness and domain sizes can be varied.
References
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Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Xuesong Li,Weiwei Cai,Jinho An,Seyoung Kim,Junghyo Nah,Dongxing Yang,Richard D. Piner,Aruna Velamakanni,Inhwa Jung,Emanuel Tutuc,Sanjay K. Banerjee,Luigi Colombo,Rodney S. Ruoff +12 more
TL;DR: It is shown that graphene grows in a self-limiting way on copper films as large-area sheets (one square centimeter) from methane through a chemical vapor deposition process, and graphene film transfer processes to arbitrary substrates showed electron mobilities as high as 4050 square centimeters per volt per second at room temperature.
Journal ArticleDOI
Fine Structure Constant Defines Visual Transparency of Graphene
Rahul R. Nair,Peter Blake,Peter Blake,Alexander N. Grigorenko,K. S. Novoselov,Timothy J. Booth,Timothy J. Booth,Tobias Stauber,Tobias Stauber,Nuno M. R. Peres,Nuno M. R. Peres,A. K. Geim +11 more
TL;DR: It is shown that the opacity of suspended graphene is defined solely by the fine structure constant, a = e2/hc � 1/137 (where c is the speed of light), the parameter that describes coupling between light and relativistic electrons and that is traditionally associated with quantum electrodynamics rather than materials science.
Journal ArticleDOI
Roll-to-roll production of 30-inch graphene films for transparent electrodes
Sukang Bae,Hyeongkeun Kim,Youngbin Lee,Xiangfan Xu,Jaesung Park,Yi Zheng,Jayakumar Balakrishnan,Tian Lei,Hye Ri Kim,Young Il Song,Young Jin Kim,Kwang S. Kim,Barbaros Özyilmaz,Jong Hyun Ahn,Byung Hee Hong,Sumio Iijima,Sumio Iijima +16 more
TL;DR: The roll-to-roll production and wet-chemical doping of predominantly monolayer 30-inch graphene films grown by chemical vapour deposition onto flexible copper substrates are reported, showing high quality and sheet resistances superior to commercial transparent electrodes such as indium tin oxides.
Journal ArticleDOI
Large Area, Few-Layer Graphene Films on Arbitrary Substrates by Chemical Vapor Deposition
Alfonso Reina,Xiaoting Jia,John T. Ho,Daniel Nezich,Hyungbin Son,Vladimir Bulovic,Mildred S. Dresselhaus,Jing Kong +7 more
TL;DR: The transparency, conductivity, and ambipolar transfer characteristics of the films suggest their potential as another materials candidate for electronics and opto-electronic applications.