Morphological, Optical, and Electronic Consequences of Coexisting Crystal Orientations in β-Copper Phthalocyanine Thin Films

2016 ◽  
Vol 120 (33) ◽  
pp. 18616-18621 ◽  
Author(s):  
Terry McAfee ◽  
Benjamin C. Hoffman ◽  
Xiao You ◽  
Joanna M. Atkin ◽  
Harald Ade ◽  
...  
Keyword(s):  
Thin Films ◽  
Copper Phthalocyanine ◽  
Crystal Orientations

scholarly journals Charge transport mechanism in copper phthalocyanine thin films with and without traps

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54911-54919 ◽  
Author(s):  
Varsha Rani ◽  
Akanksha Sharma ◽  
Pramod Kumar ◽  
Budhi Singh ◽  
Subhasis Ghosh
Keyword(s):  
Thin Films ◽  
Charge Transport ◽  
Grain Boundaries ◽  
Transport Mechanism ◽  
Copper Phthalocyanine ◽  
Organic Thin Films ◽  
Interface States ◽  
Charge Transport Mechanism ◽  
Density Of Interface States

We investigate the charge transport mechanism in copper phthalocyanine thin films with and without traps. We find that the density of interface states at the grain boundaries can decide the mechanism of charge transport in organic thin films.

Preparation of Polypeptide-Dye Multilayers by an Electrostatic Assembly Process

1994 ◽  
Vol 351 ◽  
Author(s):  
Thomas M. Cooper ◽  
L. Campbell Angela ◽  
Carol Noffsinger ◽  
Janelle Gunther-Greer ◽  
Robert L. Crane ◽  
...  
Keyword(s):  
Thin Films ◽  
Circular Dichroism ◽  
Glutamic Acid ◽  
Congo Red ◽  
Copper Phthalocyanine ◽  
Electrostatic Assembly ◽  
Amino Silane ◽  
Spectrum Characteristic ◽  
Circular Dichroïsm ◽  
Β Sheet

ABSTRACTTo develop novel optical thin films, we have prepared self-assembled polypeptide films by an electrostatic process. The films were placed on a glass slide previously silanized by an amino silane and given a positive charge by immersion in aqueous acid. Subsequent immersion of the slide in aqueous anionic solutions of either poly(L-glutamic acid), congo red, copper phthalocyanine tetrasulfonic acid or p-nitroaniline-modified poly(L-glutamic acid) resulted in deposition of the anions on the surface. Following anionic immersion, the slides were dipped into a cationic poly(L-lysine) solution. Alternate dipping into anionic and cationic solutions yielded multilayers. The thin films were characterized by optical absorption and circular dichroism. The optical density increased with dipping cycles. Circular dichroism measurements of the thin films showed induced dichroism of the congo red and phthalocyanine-containing films, suggesting formation of a locally ordered dye-polypeptide complex. Solution circular dichroism measurements of the polypeptides indicated a coil conformation, while poly(Lglutamic acid)/poly(L-lysine) complexes showed circular dichroism spectrum characteristic of a β-sheet.

scholarly journals Thin films of copper phthalocyanine deposited by solution processing methods

2020 ◽  
Vol 38 (1) ◽  
pp. 79-90
Author(s):  
Hubert Gojzewski ◽  
Fatemeh Ghani ◽  
Mirosław Szybowicz
Keyword(s):  
Thin Films ◽  
Copper Phthalocyanine ◽  
Substrate Surface ◽  
Spray Coating ◽  
Solution Concentration ◽  
Dip Coating ◽  
Solution Processing ◽  
Ambient Conditions ◽  
Processing Methods ◽  
Main Technique

AbstractIn this work, we show and discuss the surface structure picture of copper phthalocyanine (CuPc) thin films deposited from trifluoroacetic acid (TFA) solvent onto silicon substrates at ambient conditions by four solution processing methods, namely drop-casting, dip-coating, spin-casting and spray-coating. The CuPc films were studied by AFM, as the main technique, and complemented by micro-Raman spectroscopy. Essentially, such thin films consist of CuPc molecular nanoribbons of a fixed ~1 nm thickness. CuPc molecules are arranged in an in-plane direction and formed in stacks under a defined tilt angle with respect to the substrate surface (monolayer) or underlying CuPc layer (multilayer). The film morphology takes various forms depending on the solution concentration, number of layers, and the deposition method. For instance, the morphology varies from very wide (~600 nm) but flat (~1 nm) ribbons for films prepared by dip-coating to crystallized rod-like features (multi-layered ribbons) when obtained by spray-coating. The factors studied in this paper should be taken into consideration in designing and controlling the criteria for rigorous CuPc film architecture.

Vacuum deposited copper phthalocyanine thin films—structure and surface morphology

Vacuum ◽  
1998 ◽  
Vol 51 (2) ◽  
pp. 189-192 ◽  
Author(s):  
I Zhivkov ◽  
E Spassova ◽  
G Danev ◽  
Tz Ivanov ◽  
S Andreev
Keyword(s):  
Thin Films ◽  
Surface Morphology ◽  
Copper Phthalocyanine

Molecular orientation of copper phthalocyanine thin films on different monolayers of fullerene on SiO2 or highly oriented pyrolytic graphite

2015 ◽  
Vol 106 (12) ◽  
pp. 121603 ◽  
Author(s):  
Chenggong Wang ◽  
Xiaoliang Liu ◽  
Congcong Wang ◽  
Xumei Xu ◽  
Youzhen Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Orientation ◽  
Copper Phthalocyanine ◽  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite

Photogeneration mechanism of charged carriers in copper-phthalocyanine thin films

1993 ◽  
Vol 85 (1) ◽  
pp. 5-10 ◽  
Author(s):  
K. Yamamoto ◽  
S. Egusa ◽  
M. Sugiuchi ◽  
A. Miura
Keyword(s):  
Thin Films ◽  
Copper Phthalocyanine
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