Work-Function Engineering of Graphene Electrodes by Self-Assembled Monolayers for High-Performance Organic Field-Effect Transistors

Park, Jaesung; Lee, Wi Hyoung; Huh, Sung; Sim, Sung Hyun; Kim, Seung Bin; Cho, Kilwon; Hong, Byung Hee; Kim, Kwang S.

doi:10.1021/jz200265w

Cited by 241 publications

(131 citation statements)

References 29 publications

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…Abundant results have shown that large E F shift of graphene from its E D could be realized by surface doping depending on the electron affinity and coverage of the surface adsorbate [44,45]. Change of graphene charge carrier concentration (electron or hole) due to the surface doping has been detected [38].…”

Section: Resultsmentioning

confidence: 99%

Electronic structure of MoO3−x/graphene interface

Zhao

Guo

et al. 2013

Carbon

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Electronic structure of MoO3−x/graphene interface

Zhao

Guo

et al. 2013

Carbon

View full text Add to dashboard Cite

“…3d), for example, -NH 2 decreases w m , whereas -F and -CN increase w m [66]. Note that the effects of increasing/decreasing w m are similar when casting the same SAM on different metals, for example, Au, Ag [54,67,68], Cu [69], Pt [70], ITO [71], and so on, as well as on nonmetal contacts (e.g., graphene) [72].…”

Section: Improving Injection Via Self-assembled Monolayer Dipole Formmentioning

confidence: 97%

Contact engineering in organic field-effect transistors

2015

View full text Add to dashboard Cite

Organic field-effect transistors (OFETs) are promising for numerous potential applications but suffer from poor charge injection, such that their performance is severely limited. Recent efforts in lowering contact resistance have led to significantly improved field-effect mobility of OFETs, up to 100 times higher, as the results of careful choice of contact materials and/or chemical treatment of contact electrodes. Here we review the innovative developments of contact engineering and focus on the mechanisms behind them. Further improvement toward Ohmic contact can be expected along with the rapid advance in material research, which will also benefit other organic and electronic devices.

show abstract

“…oxidized moieties such as in GO) generates a band gap, opening its applicability in functional nanoelectronic devices. [24,25] The quenching of the fluorescence emission with the increment of the oxidation degree is related with the increase of the density of localized states that, as for the semiconductor, can force the dissipation energy processes toward non radiative paths (e.g. vibrational relaxation).…”

Section: Go Suspension Characterization (Different Oxidation Time)mentioning

confidence: 99%

Photochemical stability and reactivity of graphene oxide

et al. 2015

View full text Add to dashboard Cite

The photoreactivity of graphene oxide (GO) suspensions was investigated with a double aim: i) to give insights into the previously reported photo-reduction process, which allows a partial elimination of the oxygen-containing groups from the 2D graphitic structure; ii) to explore the possible use of GO as photo-activator able to promote the photo-transformation/abatement of organic molecules. To reach these goals and clarify some peculiar aspects of the photochemistry of GO till now obscure or confuse, we synthesized and characterized stable GO suspensions which were then subjected to UV-Vis irradiation for prolonged times. GO underwent partial photoreduction with the release of gaseous molecules and soluble organic species (e.g. carboxylic acid).The mechanisms of photo-reduction occurring under air or N 2 are different, as assessed by the release in solution of diverse soluble molecules. In the presence of oxygen, at long irradiation time, a complete solubilization of the graphenic structures was observed. No difference in the nature and amount of released gases (principally CO 2 and CO) was observed in the oxic or anoxic conditions.The possible use of GO as photo-activator was evaluated by using phenol as probe molecule. GO revealed a double role of photo-activator and reagent in phenol degradation, as competition was assessed between GO self-transformation/reduction and phenol degradation. At prolonged irradiation time a marked reactivity of the photoformed species was observed and the complete degradation was achieved for both organic small molecules formed from GO and the phenol added as probe molecule.

show abstract

Work-Function Engineering of Graphene Electrodes by Self-Assembled Monolayers for High-Performance Organic Field-Effect Transistors

Cited by 241 publications

References 29 publications

Electronic structure of MoO3−x/graphene interface

Electronic structure of MoO3−x/graphene interface

Contact engineering in organic field-effect transistors

Photochemical stability and reactivity of graphene oxide

Contact Info

Product

Resources

About