Enhanced Thermopower of Saturated Molecules by Noncovalent Anchor‐Induced Electron Doping of Single‐Layer Graphene Electrode

2021 ◽  
pp. 2103177
Author(s):  
Sohyun Park ◽  
Hwa Rang Kim ◽  
Juhee Kim ◽  
Byung‐Hee Hong ◽  
Hyo Jae Yoon
Keyword(s):  
Single Layer ◽  
Single Layer Graphene ◽  
Electron Doping ◽  
Layer Graphene ◽  
Graphene Electrode

scholarly journals Single-layer graphene electrode enhanced sensitivity and response speed of β-Ga2O3 solar-blind photodetector

2019 ◽  
Vol 9 (3) ◽  
pp. 1394 ◽  
Author(s):  
Han Wu ◽  
Yuanqi Huang ◽  
Yusong Zhi ◽  
Xia Wang ◽  
Xulong Chu ◽  
...  
Keyword(s):  
Single Layer ◽  
Response Speed ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Graphene Electrode ◽  
Enhanced Sensitivity ◽  
Solar Blind

scholarly journals Verification of electron doping in single-layer graphene due to H2 exposure with thermoelectric power

2015 ◽  
Vol 106 (14) ◽  
pp. 142110 ◽  
Author(s):  
Sung Ju Hong ◽  
Min Park ◽  
Hojin Kang ◽  
Minwoo Lee ◽  
David Soler-Delgado ◽  
...  
Keyword(s):  
Thermoelectric Power ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Electron Doping ◽  
Layer Graphene

Comparative study of electron transfer on various graphene-metallic contacts

2019 ◽  
Vol 33 (31) ◽  
pp. 1950384
Author(s):  
Di Lu ◽  
Yu-E Yang ◽  
Weichun Zhang ◽  
Caixia Wang ◽  
Jining Fang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Layer ◽  
Annealing Treatment ◽  
Single Layer Graphene ◽  
Strain Effect ◽  
Graphene Surface ◽  
Layer Graphene ◽  
Metallic Contacts ◽  
Nonuniform Strain ◽  
Main Factor

We have investigated Raman spectra of the G and 2D lines of a single-layer graphene (SLG) with metallic contacts. The shift of the G and 2D lines is correlated to two different factors. Before performing annealing treatment or annealing under low temperature, the electron transfer on graphene surface is dominated by nonuniform strain effect. As the annealing treatment is enhanced, however, a suitable annealing treatment can eliminate the nonuniform strain effect where the relative work function (WF) between graphene and metal becomes a main factor to determine electronic transfer. Moreover, it is confirmed that the optimized annealing treatment can also decrease effectively the structural defect and induced disorder in graphene due to metallic contacts.

scholarly journals Millisecond lattice gasification for high-density CO2- and O2-sieving nanopores in single-layer graphene

2021 ◽  
Vol 7 (9) ◽  
pp. eabf0116
Author(s):  
Shiqi Huang ◽  
Shaoxian Li ◽  
Luis Francisco Villalobos ◽  
Mostapha Dakhchoune ◽  
Marina Micari ◽  
...  
Keyword(s):  
Single Layer ◽  
High Density ◽  
Single Layer Graphene ◽  
Pore Density ◽  
Vacancy Defects ◽  
Carbon Gasification ◽  
Layer Graphene ◽  
Gas Molecules ◽  
Good Agreement

Etching single-layer graphene to incorporate a high pore density with sub-angstrom precision in molecular differentiation is critical to realize the promising high-flux separation of similar-sized gas molecules, e.g., CO2 from N2. However, rapid etching kinetics needed to achieve the high pore density is challenging to control for such precision. Here, we report a millisecond carbon gasification chemistry incorporating high density (>1012 cm−2) of functional oxygen clusters that then evolve in CO2-sieving vacancy defects under controlled and predictable gasification conditions. A statistical distribution of nanopore lattice isomers is observed, in good agreement with the theoretical solution to the isomer cataloging problem. The gasification technique is scalable, and a centimeter-scale membrane is demonstrated. Last, molecular cutoff could be adjusted by 0.1 Å by in situ expansion of the vacancy defects in an O2 atmosphere. Large CO2 and O2 permeances (>10,000 and 1000 GPU, respectively) are demonstrated accompanying attractive CO2/N2 and O2/N2 selectivities.

Mass spectrometry imaging of untreated wet cell membranes in solution using single-layer graphene

2021 ◽  
Vol 18 (3) ◽  
pp. 316-320 ◽  
Author(s):  
Heejin Lim ◽  
Sun Young Lee ◽  
Yereum Park ◽  
Hyeonggyu Jin ◽  
Daeha Seo ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrometry Imaging ◽  
Cell Membranes ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene
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