Application of Molecular Simulation Techniques to the Study of Factors Affecting the Thin-Film Morphology of Small-Molecule Organic Semiconductors†

2011 ◽  
Vol 23 (3) ◽  
pp. 522-543 ◽  
Author(s):  
Paulette Clancy
Keyword(s):  
Thin Film ◽  
Molecular Simulation ◽  
Organic Semiconductors ◽  
Small Molecule ◽  
Film Morphology ◽  
Factors Affecting ◽  
Simulation Techniques

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

scholarly journals Physical mixtures of small-molecule and polymeric organic semiconductors: comparing thermodynamic behavior and thin-film structure

2013 ◽  
Vol 1 (4) ◽  
pp. 778-785 ◽  
Author(s):  
Benjamin H. Wunsch ◽  
Kyungtae Kim ◽  
Yecheol Rho ◽  
Byungcheol Ahn ◽  
Sungmin Jung ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
Small Molecule ◽  
Film Structure ◽  
Thin Film Structure ◽  
Thermodynamic Behavior ◽  
Physical Mixtures

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

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.

An electron-rich 2-alkylthieno[3,4-b]thiophene building block with excellent electronic and morphological tunability for high-performance small-molecule solar cells

2016 ◽  
Vol 4 (44) ◽  
pp. 17354-17362 ◽  
Author(s):  
Shengjie Xu ◽  
Zichun Zhou ◽  
Haijun Fan ◽  
Longbin Ren ◽  
Feng Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Electronic Structure ◽  
Solar Cells ◽  
Small Molecule ◽  
Building Block ◽  
High Performance ◽  
Film Morphology ◽  
Donor And Acceptor

2-Alkylthieno[3,4-b]thiophene functions: to modulate electronic structure, to manipulate thin-film morphology, to link donor and acceptor moieties.

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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