scholarly journals Role of Polymorphism and Thin-Film Morphology in Organic Semiconductors Processed by Solution Shearing

ACS Omega ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 2329-2339 ◽  
Author(s):  
Sergi Riera-Galindo ◽  
Adrián Tamayo ◽  
Marta Mas-Torrent
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
Film Morphology

Hydrogen sensors: Role of palladium thin film morphology

2007 ◽  
Vol 120 (2) ◽  
pp. 439-446 ◽  
Author(s):  
J. RaviPrakash ◽  
A.H. McDaniel ◽  
M. Horn ◽  
L. Pilione ◽  
P. Sunal ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Morphology ◽  
Hydrogen Sensors

scholarly journals In-situ monitoring of molecular vibrations of two organic semiconductors in photovoltaic blends and their impact on thin film morphology

2013 ◽  
Vol 102 (17) ◽  
pp. 173302 ◽  
Author(s):  
Wing C. Tsoi ◽  
Weimin Zhang ◽  
Joseph Razzell Hollis ◽  
Minwon Suh ◽  
Martin Heeney ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
In Situ Monitoring ◽  
Film Morphology ◽  
Molecular Vibrations

Organic Semiconductors Derived from Dinaphtho-Fused s-Indacenes: How Molecular Structure and Film Morphology Influence Thin-Film Transistor Performance

2019 ◽  
Vol 31 (17) ◽  
pp. 6962-6970 ◽  
Author(s):  
Andrew M. Zeidell ◽  
Laura Jennings ◽  
Conerd K. Frederickson ◽  
Qianxiang Ai ◽  
Justin J. Dressler ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Thin Film ◽  
Organic Semiconductors ◽  
Thin Film Transistor ◽  
Film Morphology ◽  
Morphology Influence

Molecular Dynamics Study of the Role of the Free Surface on Block Copolymer Thin Film Morphology and Alignment

ACS Nano ◽  
2011 ◽  
Vol 5 (4) ◽  
pp. 2895-2907 ◽  
Author(s):  
Christopher Forrey ◽  
Kevin G. Yager ◽  
Samuel P. Broadaway
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Free Surface ◽  
Block Copolymer ◽  
Film Morphology

scholarly journals Polyferrocenylsilane Semicrystalline Polymer Additive for Solution-Processed p-Channel Organic Thin Film Transistors

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 402
Author(s):  
Zhengran He ◽  
Ziyang Zhang ◽  
Kyeiwaa Asare-Yeboah ◽  
Sheng Bi ◽  
Jihua Chen ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
Thin Film Transistors ◽  
High Performance ◽  
Organic Thin Film Transistors ◽  
Semicrystalline Polymer ◽  
Film Morphology ◽  
Organic Thin Film ◽  
Fold Reduction ◽  
Grain Width

In this study, we demonstrated for the first time that a metal-containing semicrystalline polymer was used as an additive to mediate the thin film morphology of solution-grown, small-molecule organic semiconductors. By mixing polyferrocenylsilane (PFS) with an extensively-studied organic semiconductor 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene), PFS as a semicrystalline polymer independently forms nucleation and crystallization while simultaneously ameliorating diffusivity of the blend system and tuning the surface energies as a result of its partially amorphous property. We discovered that the resultant blend film exhibited a 6-fold reduction in crystal misorientation angle and a 3-fold enlargement in average grain width. Enhanced crystal orientation considerably reduces mobility variation, while minimized defects and trap centers located at grain boundaries lessen the adverse impact on the charge transport. Consequently, bottom-gate, top-contact organic thin film transistors (OTFTs) based on the TIPS pentacene/PFS mixture yielded a 40% increase in performance consistency (represented by the ratio of average mobility to the standard deviation of mobility). The PFS semicrystalline polymer-controlled crystallization can be used to regulate the thin film morphology of other high-performance organic semiconductors and shed light on applications in organic electronic devices.

On the role of tin underlays for the prevention of thermal grooving in thin gold films

1986 ◽  
Vol 44 ◽  
pp. 732-733
Author(s):  
Jin Young Kim ◽  
R. E. Hummel ◽  
R. T. DeHoff
Keyword(s):  
Thin Film ◽  
Free Surface ◽  
Grain Boundary ◽  
Beneficial Effect ◽  
Failure Mechanism ◽  
Failure Mechanisms ◽  
Distinct Advantage ◽  
Gold Films ◽  
Gold Thin Film

Gold thin film metallizations in microelectronic circuits have a distinct advantage over those consisting of aluminum because they are less susceptible to electromigration. When electromigration is no longer the principal failure mechanism, other failure mechanisms caused by d.c. stressing might become important. In gold thin-film metallizations, grain boundary grooving is the principal failure mechanism.Previous studies have shown that grain boundary grooving in gold films can be prevented by an indium underlay between the substrate and gold. The beneficial effect of the In/Au composite film is mainly due to roughening of the surface of the gold films, redistribution of indium on the gold films and formation of In2O3 on the free surface and along the grain boundaries of the gold films during air annealing.

Quantitative Image Analysis of Fractal-like Thin Films of Organic Semiconductors

2018 ◽  
Author(s):  
Weikun Zhu ◽  
Erfan Mohammadi ◽  
Ying Diao
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Image Analysis ◽  
Fractal Dimension ◽  
Organic Semiconductors ◽  
Film Growth ◽  
Electronic Device ◽  
Significant Control ◽  
Semiconductor Thin Films ◽  
Two Parameters

Morphology modulation offers significant control over organic electronic device performance. However, morphology quantification has been rarely carried out via image analysis. In this work, we designed a MATLAB program to evaluate two key parameters describing morphology of small molecule semiconductor thin films: fractal dimension and film coverage. We then employ this program in a case study of meniscus-guided coating of 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C<sub>8</sub>-BTBT) under various conditions to analyze a diverse and complex morphology set. The evolution of morphology in terms of fractal dimension and film coverage was studied as a function of coating speed. We discovered that combined fractal dimension and film coverage can quantitatively capture the key characteristics of C<sub>8</sub>-BTBT thin film morphology; change of these two parameters further inform morphology transition. Furthermore, fractal dimension could potentially shed light on thin film growth mechanisms.

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