scholarly journals Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1136 ◽  
Author(s):  
Haitao Wang ◽  
Xiangdong Yang ◽  
Weidong Dou ◽  
Peng Wang ◽  
Quanlin Ye ◽  
...  
Keyword(s):  
Work Function ◽  
Organic Molecules ◽  
Self Assembled Monolayers ◽  
Functionalized Graphene ◽  
Active Materials ◽  
Band Bending ◽  
Assembled Monolayers ◽  
Graphene Interface ◽  
Modified Graphene ◽  
The Impact

The impact of graphene work function (WF) on the electronic structure at the graphene/organic interface has been investigated. WF manipulation of graphene is realized using self-assembled monolayers (SAMs) with different end groups. With this method, the upper surface of the functionalized graphene remains intact, and thus precludes changes of molecular orientation and packing structures of subsequently deposited active materials. The WF of NH2-SAM functionalized graphene is ~3.90 eV. On the other hand, the WF of graphene increases to ~5.38 eV on F-SAM. By tuning the WF of graphene, an upward band bending is found at the ZnPc/graphene interface on F-SAM. At the interface between C60 and NH2-SAM modified graphene, a downward band bending is observed.

Semiconductor self-assembled monolayers as selective contacts for efficient PiN perovskite solar cells

2019 ◽  
Vol 12 (1) ◽  
pp. 230-237 ◽  
Author(s):  
E. Yalcin ◽  
M. Can ◽  
C. Rodriguez-Seco ◽  
E. Aktas ◽  
R. Pudi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Molecules ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Self Assembled Monolayers ◽  
Lead Iodide ◽  
Assembled Monolayers ◽  
Type Contact ◽  
Self Assembled ◽  
P Type

Herein, we studied the use of two different Self Assembled Monolayers (SAMs) made of semiconductor hole transport organic molecules to replace the most common p-type contact, PEDOT:PSS, in PiN methyl ammonium lead iodide perovskite solar cells (PSCs).

scholarly journals Imaging Photoelectron Transmission through Self-Assembled Monolayers:  The Work-Function of Alkanethiols Coated Gold

Langmuir ◽  
2007 ◽  
Vol 23 (11) ◽  
pp. 6156-6162 ◽  
Author(s):  
Despina Fragouli ◽  
Theofanis N. Kitsopoulos ◽  
Letizia Chiodo ◽  
Fabio Della Sala ◽  
Roberto Cingolani ◽  
...  
Keyword(s):  
Work Function ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals Light-induced reversible modification of the work function of a new perfluorinated biphenyl azobenzene chemisorbed on Au (111)

Nanoscale ◽  
2014 ◽  
Vol 6 (15) ◽  
pp. 8969-8977 ◽  
Author(s):  
Appan Merari Masillamani ◽  
Silvio Osella ◽  
Andrea Liscio ◽  
Oliver Fenwick ◽  
Federica Reinders ◽  
...  
Keyword(s):  
Work Function ◽  
Optical Switch ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Reversible Modification ◽  
Self Assembled

Self-assembled monolayers of fluorinated azobenzene molecules on gold display an optical switch of the work function with magnitude 220 meV.

scholarly journals Transfer of chiral information from a chiral solvent to a two-dimensional network

2017 ◽  
Vol 204 ◽  
pp. 215-231 ◽  
Author(s):  
Iris Destoop ◽  
Andrea Minoia ◽  
Oleksandr Ivasenko ◽  
Aya Noguchi ◽  
Kazukuni Tahara ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Chiral Induction ◽  
Dimensional Network ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
The Impact ◽  
Atomically Flat ◽  
Origin Of Homochirality

Chiral induction in self-assembled monolayers has garnered considerable attention in the recent past, not only due to its importance in chiral resolution and enantioselective heterogeneous catalysis but also because of its relevance to the origin of homochirality in life. Here, we demonstrate the emergence of homochirality in a supramolecular low-density network formed by achiral molecules at the interface of a chiral solvent and an atomically-flat achiral substrate. We focus on the impact of structure and functionality of the adsorbate and the chiral solvent on the chiral induction efficiency in self-assembled physisorbed monolayers, as revealed by scanning tunneling microscopy. Different induction mechanisms are proposed and evaluated, with the assistance of advanced molecular modeling simulations.

scholarly journals The Impact of Solution Agglomeration on the Deposition of Self-Assembled Monolayers

Langmuir ◽  
2000 ◽  
Vol 16 (20) ◽  
pp. 7742-7751 ◽  
Author(s):  
B. C. Bunker ◽  
R. W. Carpick ◽  
R. A. Assink ◽  
M. L. Thomas ◽  
M. G. Hankins ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
The Impact

scholarly journals Nanoscale Work Function Contrast Induced by Decanethiol Self-Assembled Monolayers on Au(111)

Langmuir ◽  
2020 ◽  
Vol 36 (42) ◽  
pp. 12745-12754
Author(s):  
Martina Tsvetanova ◽  
Valent J. S. Oldenkotte ◽  
M. Candelaria Bertolino ◽  
Yuqiang Gao ◽  
Martin H. Siekman ◽  
...  
Keyword(s):  
Work Function ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled
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