Moisture Condensation on Epitaxial Graphene upon Cooling

被引：1

作者：

Saleem, Muhammad Farooq ^{[1
,2
]}

Khan, Niaz Ali ^{[3
]}

Javid, Muhammad ^{[4
]}

Ashraf, Ghulam Abbas ^{[5
]}

Haleem, Yasir A. A. ^{[6
]}

Iqbal, Muhammad Faisal ^{[7
]}

Bilal, Muhammad ^{[8
]}

Wang, Peijie ^{[9
]}

Ma, Lei ^{[1
]}

机构：

[1] Tianjin Univ, Tianjin Int Ctr Nanoparticles & Nanosyst, Tianjin 300072, Peoples R China

[2] Chinese Acad Sci, Aerosp Informat Res Inst, GBA Branch, Guangzhou 510700, Peoples R China

[3] Wuhan Text Univ, Hubei Key Lab Adv Text Mat & Applicat, Yangguang Rd 1, Wuhan 430200, Peoples R China

[4] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Inst Adv Magnet Mat, Hangzhou 310012, Peoples R China

[5] Hohai Univ, Coll Environm, Key Lab Integrated Regulat & Resources Dev Shallow, Minist Educ, Nanjing 210098, Peoples R China

[6] Khwaja Fareed Univ Engn & Informat Technol, Dept Phys, Rahim Yar Khan 64200, Pakistan

[7] Riphah Int Univ, Dept Phys, Faisalabad 38000, Pakistan

[8] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

[9] Capital Normal Univ, Dept Phys, Beijing Key Lab Nanophoton & Nanostruct, Beijing 100048, Peoples R China

来源：

TECHNOLOGIES | 2023年 / 11卷 / 01期

关键词：

epitaxial graphene; Raman scattering; condensation; adsorption; RAMAN-SPECTRA;

D O I：

10.3390/technologies11010030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Condensation of moisture on the epitaxial graphene on 6H-SiC was observed below room temperature despite continuous nitrogen flow on the graphene surface. Raman peaks associated with ice were observed. A combination of peaks in the frequency range of 500-750 cm(-1), along with a broad peak centered at similar to 1327 cm(-1), were also observed and were assigned to airborne contaminants. The latter is more important since its position is in the frequency range where the defect-associated D band of graphene appears. This band can be easily misunderstood to be the D band of graphene, particularly when the Raman spectrum is taken below room temperature. This peak was even observed after the sample was brought back to room temperature due to water stains. This work highlights the importance of careful Raman investigation of graphene below room temperature and its proper insulation against moisture.

引用

页数：7

共 25 条

[1] Radiation Efficiency Enhancement of Graphene Plasmonic Devices Using Matching Circuits [J].