Orientation-Independent Charge Transport in Single Spherulites from Solution-Processed Organic Semiconductors

2012 ◽  
Vol 134 (12) ◽  
pp. 5436-5439 ◽  
Author(s):  
Stephanie S. Lee ◽  
Marsha A. Loth ◽  
John E. Anthony ◽  
Yueh-Lin Loo
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Solution Processed

Nanoconfining solution-processed organic semiconductors for emerging optoelectronics

2021 ◽  
Author(s):  
Yuze Zhang ◽  
Alina Chen ◽  
Min-Woo Kim ◽  
Aida Alaei ◽  
Stephanie S. Lee
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Light Emission ◽  
Solution Processed ◽  
Semiconductor Crystals

This tutorial review highlights the role of nanoconfinement in selecting for orientations and polymorphs of organic semiconductor crystals that are optimized for optoelectronic processes, including charge transport and light emission.

Organic Semiconductors with Benzoic Acid Based Additives for Solution-Processed Thin Film Transistors

2021 ◽  
Vol 01 ◽  
Author(s):  
Ziyang Zhang ◽  
Zhengran He ◽  
Kyeiwaa Asare-Yeboah ◽  
Sheng Bi
Keyword(s):  
Thin Film ◽  
Benzoic Acid ◽  
Charge Transport ◽  
Organic Semiconductors ◽  
Thin Film Transistors ◽  
Acid Mixture ◽  
Organic Thin Film ◽  
Solution Processed ◽  
Hydrophobic Tail ◽  
Bottom Gate

Background: although solution-processed small molecular organic semiconductors have attracted great attention for organic electronic applications,the intrinsic crystal misorientation of the organic semiconductorsstill remains as a challenging issue. Objective: two benzoic acid-based additives, i.e. 4-propylbenzoic acid (RBA) and 4-octylbenzoic acid (OBA), were employed to regulate the crystal growth and charge transport of organic semiconductors. Methods: RBA and OBA were mixed with a π-conjugated organic semiconductor 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene), respectively. Organic thin film transistors (OTFTs) with different bottom-gate, top-contact and bottom-gate, bottom-contact configurations were fabricated to investigate charge transport. Results: RBA and OBA share a similar benzoic acid structure with the same hydrophilic head but differ in the length of hydrophobic tail. The benzoic acid-based additive forms a stratified self-assembled interfacial layer and maneuvers nucleation seed distribution via synergetic interactions with the silanol groups on silicon dioxide and with the bulky side chains of the semiconductor. The TIPS pentacene film with OBA additive exhibited a 10-fold reduction in misorientation angle, as compared to the counterpart with RBA. Conclusion: Distinct thin film morphology in terms of crystal alignment and grain width was observed and correlated to the hydrophobic tail length. In particular,OTFTs incorporating the TIPS pentacene/benzoic acid mixture as the active layer showed a mobility of up to 0.15 cm2/Vs.

Design and Synthesis of Two-Dimensional Covalent Organic Frameworks with Four-Arm Cores: Prediction of Remarkable Ambipolar Charge-Transport Properties

2019 ◽  
Author(s):  
Simil Thomas ◽  
Hong Li ◽  
Raghunath R. Dasari ◽  
Austin Evans ◽  
William Dichtel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Density Functional ◽  
Polymer Networks ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
X Ray Diffraction ◽  
Zinc Porphyrin ◽  
Design And Synthesis ◽  
Predicted Values

<p>We have considered three two-dimensional (2D) π-conjugated polymer networks (i.e., covalent organic frameworks, COFs) materials based on pyrene, porphyrin, and zinc-porphyrin cores connected <i>via</i> diacetylenic linkers. Their electronic structures, investigated at the density functional theory global-hybrid level, are indicative of valence and conduction bands that have large widths, ranging between 1 and 2 eV. Using a molecular approach to derive the electronic couplings between adjacent core units and the electron-vibration couplings, the three π-conjugated 2D COFs are predicted to have ambipolar charge-transport characteristics with electron and hole mobilities in the range of 65-95 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>. Such predicted values rank these 2D COFs among the highest-mobility organic semiconductors. In addition, we have synthesized the zinc-porphyrin based 2D COF and carried out structural characterization via powder X-ray diffraction and surface area analysis, which demonstrates the feasability of these electroactive networks.</p>

Rational design and crystal structure prediction of ring-fused double-PDI compounds as n-channel organic semiconductors: a DFT study

2021 ◽  
Author(s):  
Suryakanti Debata ◽  
Smruti R. Sahoo ◽  
Rudranarayan Khatua ◽  
Sridhar Sahu
Keyword(s):  
Crystal Structure ◽  
Charge Transport ◽  
Organic Semiconductors ◽  
Structure Prediction ◽  
Rational Design ◽  
Molecular Design ◽  
Design Strategy ◽  
Dft Study ◽  
Crystal Structure Prediction ◽  
Model Compounds

In this study, we present an effective molecular design strategy to develop the n-type charge transport characteristics in organic semiconductors, using ring-fused double perylene diimides (DPDIs) as the model compounds.

A Review on Solution-Processed Perovskite/Organic Hybrid Photodetectors

2021 ◽  
Author(s):  
Yadong Wang ◽  
Yingliang Liu ◽  
Shaokui Cao ◽  
Jizheng Wang
Keyword(s):  
Organic Semiconductors ◽  
Next Generation ◽  
Solution Processed ◽  
Organic Hybrid

Both perovskites and organic semiconductors are promising candidates for next-generation portable and wearable photodetectors (PDs), owing to their facile solution processibility and remarkable optoelectronic features. In recent years, there are...

Star-shaped organic semiconductors with planar triazine core and diketopyrrolopyrrole branches for solution-processed small-molecule organic solar cells

2015 ◽  
Vol 115 ◽  
pp. 35-49 ◽  
Author(s):  
Sheng-Yi Shiau ◽  
Chun-Ho Chang ◽  
Wei-Jen Chen ◽  
Hsing-Ju Wang ◽  
Ru-Jong Jeng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Semiconductors ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Solution Processed
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