scholarly journals Bottom-electrode induced defects in self-assembled monolayer (SAM)-based tunnel junctions affect only the SAM resistance, not the contact resistance or SAM capacitance

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 19939-19949 ◽  
Author(s):  
C. S. Suchand Sangeeth ◽  
Li Jiang ◽  
Christian A. Nijhuis
Keyword(s):  
Contact Resistance ◽  
Bottom Electrode ◽  
Electrode Materials ◽  
Tunnel Junctions ◽  
Molecular Junctions ◽  
Electrical Characteristics ◽  
Large Area ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
Induced Defects

In large area molecular junctions, defects are always present and can be caused by impurities and/or defects in the electrode materials and/or SAMs, but how they affect the electrical characteristics of junctions has rarely been studied.

Electrical Characteristics of Molecular Junctions Fabricated by Inverted Self-Assembled Monolayer Method

2020 ◽  
Vol 20 (8) ◽  
pp. 4648-4651
Author(s):  
Wang-Taek Hwang ◽  
Yeonsik Jang ◽  
Minwoo Song ◽  
Takhee Lee
Keyword(s):  
Statistical Analysis ◽  
Electrode Surface ◽  
Bottom Electrode ◽  
Molecular Layer ◽  
Molecular Junctions ◽  
Electrical Characteristics ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
Molecular Ensemble

In this study, we demonstrated the molecular ensemble junctions fabricated by the inverted selfassembled monolayer (iSAM) method in which the molecular layer was deposited on the top electrode surface. The alkyl thiolate molecules were used to benchmark this method and we found that the electrical characteristics of these molecular junctions were comparable to the results reported previously by performing statistical analysis. We expect this iSAM method to enable the molecular junctions with bottom electrode of various materials.

scholarly journals Electrical characteristics of conjugated self-assembled monolayers in large-area molecular junctions

2010 ◽  
Vol 97 (17) ◽  
pp. 173302 ◽  
Author(s):  
A. J. Kronemeijer ◽  
E. H. Huisman ◽  
H. B. Akkerman ◽  
A. M. Goossens ◽  
I. Katsouras ◽  
...  
Keyword(s):  
Molecular Junctions ◽  
Self Assembled Monolayers ◽  
Electrical Characteristics ◽  
Large Area ◽  
Assembled Monolayers ◽  
Self Assembled

Patterning Organic Fluorescent Molecules with SAM Patterns

2011 ◽  
Vol 1335 ◽  
Author(s):  
Qiong Wu ◽  
Juanyuan Hao ◽  
Shoulei Shi ◽  
Weifeng Wang ◽  
Nan Lu
Keyword(s):  
Organic Molecules ◽  
Low Cost ◽  
Substrate Surface ◽  
Large Area ◽  
Self Assembled Monolayer ◽  
Storage Duration ◽  
Light Emitting ◽  
High Throughput Method ◽  
Self Assembled ◽  
Fluorescent Molecules

ABSTRACTWe report a low-cost and high-throughput method to fabricate large-area light emitting pattern via thermal evaporation of organic molecules on the patterned self-assembled monolayer of homogenous 3-aminopropyltrimethoxysilane. This method is based on the selective deposition of the organic light emitting molecules on the template of self-assembled monolayer (SAM), which is patterned with nanoimprinting lithography. The selectivity can be controlled by adjusting the design of the pattern, the storage duration and the substrate temperature. The deposition selectivity of the molecules may be caused by the different binding energy of the molecules with the SAM and the substrate surface.

Temperature-Dependent Charge Transport of Large-Area Molecular Junctions with PEDOT:PSS Electrodes

2020 ◽  
Vol 12 (3) ◽  
pp. 333-336
Author(s):  
Jungmoon Lim ◽  
Gahyun Ahn ◽  
Inho Jeong ◽  
Hyunwook Song
Keyword(s):  
Charge Transport ◽  
Annealing Temperature ◽  
Molecular Junctions ◽  
Electrical Characteristics ◽  
Large Area ◽  
Temperature Dependent ◽  
Interfacial Contact ◽  
End Groups ◽  
Backbone Structure ◽  
Dependent Transport

We report on the temperature-dependent transport behaviors of large-area molecular junctions fabricated with poly-(3,4-ethylene-dioxythiophene) stabilized with polystyrene sulphonic acid (PEDOT:PSS) interlayer electrodes and the archetypal benzenethiol molecules. In this study, we investigated two different benzenethiol molecules: 4-methylbenzenethiol (MBT) and 1,4-benzenedithiol (BDT), which have the identical backbone structure but different top end-groups. The charge transport through the molecular junctions was dominated by distinct interfacial contact properties between the PEDOT:PSS electrodes and the component molecules. We also observed that the electrical characteristics of the MBT junctions are influenced by the PEDOT grain size, particularly depending on the annealing temperature.

scholarly journals Electron tunneling through alkanedithiol self-assembled monolayers in large-area molecular junctions

2007 ◽  
Vol 104 (27) ◽  
pp. 11161-11166 ◽  
Author(s):  
H. B. Akkerman ◽  
R. C. G. Naber ◽  
B. Jongbloed ◽  
P. A. van Hal ◽  
P. W. M. Blom ◽  
...  
Keyword(s):  
Electron Tunneling ◽  
Molecular Junctions ◽  
Self Assembled Monolayers ◽  
Large Area ◽  
Assembled Monolayers ◽  
Self Assembled

Molecular junctions of ∼1 nm device length on self-assembled monolayer modified n- vs. p-GaAs

2008 ◽  
Vol 18 (45) ◽  
pp. 5459 ◽  
Author(s):  
Fernanda Camacho-Alanis ◽  
Lingling Wu ◽  
Giovanni Zangari ◽  
Nathan Swami
Keyword(s):  
Molecular Junctions ◽  
Self Assembled Monolayer ◽  
Self Assembled

scholarly journals Nanoscale patterning of a self-assembled monolayer by modification of the molecule–substrate bond

2014 ◽  
Vol 5 ◽  
pp. 258-267 ◽  
Author(s):  
Cai Shen ◽  
Manfred Buck
Keyword(s):  
Structural Phase ◽  
Lateral Diffusion ◽  
Scanning Tunneling ◽  
Self Assembled Monolayer ◽  
Nanoscale Patterning ◽  
Interfacial Structures ◽  
Self Assembled ◽  
The Difference ◽  
20 Nm ◽  
Induced Defects

The intercalation of Cu at the interface of a self-assembled monolayer (SAM) and a Au(111)/mica substrate by underpotential deposition (UPD) is studied as a means of high resolution patterning. A SAM of 2-(4'-methylbiphenyl-4-yl)ethanethiol (BP2) prepared in a structural phase that renders the Au substrate completely passive against Cu-UPD, is patterned by modification with the tip of a scanning tunneling microscope. The tip-induced defects act as nucleation sites for Cu-UPD. The lateral diffusion of the metal at the SAM–substrate interface and, thus, the pattern dimensions are controlled by the deposition time. Patterning down to the sub-20 nm range is demonstrated. The difference in strength between the S–Au and S–Cu bond is harnessed to develop the latent Cu-UPD image into a patterned binary SAM. Demonstrated by the exchange of BP2 by adamantanethiol (AdSH) this is accomplished by a sequence of reductive desorption of BP2 in Cu free areas followed by adsorption of AdSH. The appearance of Au adatom islands upon the thiol exchange suggests that the interfacial structures of BP2 and AdSH SAMs are different.

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