Self-Assembled Organic Monolayer Films on Underpotentially Deposited Metal Layers

1996 ◽  
Vol 451 ◽  
Author(s):  
G. K. Jennings ◽  
P. E. Laibinis
Keyword(s):  
Modified Electrodes ◽  
Self Assembled Monolayers ◽  
Monolayer Films ◽  
Organic Monolayer ◽  
New Family ◽  
Deposited Metal ◽  
Assembled Monolayers ◽  
Improved Stability ◽  
Self Assembled ◽  
Metal Layers

ABSTRACTThis paper describes a new family of organized molecular assemblies that are produced by the spontaneous adsorption of alkanethiols onto gold surfaces that have been modified by the underpotential deposition of copper or silver. The system has the flexibility associated with the formation of self-assembled monolayers by the adsorption of thiols onto gold with the advantage of improved stability. The use of these systems as modified electrodes is also addressed.

Bonding and Penetration at Metal/Self-Assembled Organic Monolayer Interfaces

1995 ◽  
Vol 385 ◽  
Author(s):  
D. R. Jung ◽  
A. W. Czanderna ◽  
G. C. Herdt
Keyword(s):  
Metal Oxide ◽  
Environmental Conditions ◽  
Interfacial Properties ◽  
Self Assembled Monolayers ◽  
Organic Substrates ◽  
Research Results ◽  
Organic Monolayer ◽  
Organic Interfaces ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACTThe purpose of research on metals (M) deposited onto self-assembled monolayers (SAMs) is to understand the interactions between the metal and eventually metal oxide overlayers on well-ordered organic substrates. Applications of M/SAM and inorganic/SAM research results to the understanding of real inorganic/organic interfaces in vacuum and under environmental conditions can potentially play a key role in the development of advanced devices with stable interfacial properties. The results of selected M/SAM studies to date are reviewed, and MISAM combinations ranked according to reactivity and penetration. Specific examples of reactive interfaces (Cu/COOH, Cr/several groups) and nonreactive interfaces with penetration (Ag/CH3, Ag/COOH) are used to illustrate the extremes.

Achieving high efficiency and improved stability in large-area ITO-free perovskite solar cells with thiol-functionalized self-assembled monolayers

2016 ◽  
Vol 4 (20) ◽  
pp. 7903-7913 ◽  
Author(s):  
Chih-Yu Chang ◽  
Yu-Chia Chang ◽  
Wen-Kuan Huang ◽  
Wen-Chi Liao ◽  
Hung Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Self Assembled Monolayers ◽  
Large Area ◽  
Highly Efficient ◽  
Interfacial Modification ◽  
Assembled Monolayers ◽  
Improved Stability ◽  
Self Assembled

A promising approach towards highly efficient and stable large-area ITO-free perovskite solar cells is demonstrated by employing thiol-functionalized self-assembled monolayers as interfacial modification layers.

Computational investigations of electronic structure modifications of ferrocene-terminated self-assembled monolayers: effects of electron donating/withdrawing functional groups attached on the ferrocene moiety

2017 ◽  
Vol 19 (48) ◽  
pp. 32715-32722 ◽  
Author(s):  
Yasuyuki Yokota ◽  
Sumito Akiyama ◽  
Yukio Kaneda ◽  
Akihito Imanishi ◽  
Kouji Inagaki ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Functional Groups ◽  
Electronic Structures ◽  
Modified Electrodes ◽  
Chemically Modified Electrodes ◽  
Self Assembled Monolayers ◽  
Chemically Modified ◽  
Redox Center ◽  
Assembled Monolayers ◽  
Self Assembled

The electronic structures of chemically modified electrodes can be tuned by the functional groups attached on the redox center.

scholarly journals Tuning of Metal Work Functions with Self-Assembled Monolayers

2005 ◽  
Vol 871 ◽  
Author(s):  
B. de Boer ◽  
A. Hadipour ◽  
M. M. Mandoc ◽  
P. W. M. Blom
Keyword(s):  
Modified Electrodes ◽  
Photovoltaic Cell ◽  
Silver Electrode ◽  
Hole Injection ◽  
Self Assembled Monolayers ◽  
Polymer Leds ◽  
Assembled Monolayers ◽  
Work Functions ◽  
Self Assembled ◽  
Metal Work

AbstractWe demonstrate the tuning of metal work functions by chemically modifying the metal surface through the formation of chemisorbed self-assembled monolayers (SAMs) derived from 1H,1H,2H,2H-perfluorinated alkanethiols and hexadecanethiol. The ordering inherent in the SAMs creates an effective, molecular dipole at the metal/SAM interface, which increased the work function of Ag (φAg∼4.4 eV) to 5.5 eV (Δφ∼1.1 eV) for 1H,1H,2H,2H-perfluorinated alkanethiols. Hexadecanethiol on the other hand shifted φAg to 3.8 eV (Δφ ∼0.6 eV). On Au, the SAM of 1H,1H,2H,2H-perfluorodecanethiol raised φAu (4.9 eV) with 0.6 eV to 5.5 eV, whereas hexadecanethiol decreased φAu by 0.8 eV. These chemically modified electrodes were applied in the fabrication of polymer LEDs and the hole injection into poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene (MEH-PPV) was investigated. An Ohmic contact for hole injection between a silver electrode functionalized with the perfluorinated SAMs, and MEH-PPV with a HOMO of 5.3 eV was established. Conversely, a silver electrode modified with a SAM of hexadecanethiol lowered φAg to 3.8 eV blocked the hole injection into PPV, which enables studying the electron transport in composite devices. The electron-only current was measured in a polymer/polymer blend photovoltaic cell based on MDMO-PPV (as donor) and poly[oxa-1,4-phenylene-(1-cyano-1,2-vinylene)-(2-methoxy-5-(3′,7′-dimethyloctyloxy)-phenylene)-1,2-(2-cyanovinylene)-1,4-phenylene] (PCNEPV, acceptor). This method demonstrates a simple and attractive approach to modify and improve metal/organic contacts in organic electronic devices like LEDs, photovoltaic cells, and FETs.

High Sensitivity Tuning of Work Function of Self-Assembled Monolayers Modified Electrodes Using Vacuum Ultraviolet Treatment

2017 ◽  
Vol 9 (34) ◽  
pp. 28151-28156 ◽  
Author(s):  
Porraphon Tantitarntong ◽  
Peter Zalar ◽  
Naoji Matsuhisa ◽  
Kyohei Nakano ◽  
Sunghoon Lee ◽  
...  
Keyword(s):  
Work Function ◽  
Vacuum Ultraviolet ◽  
Modified Electrodes ◽  
High Sensitivity ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Ultraviolet Treatment
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