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Title: Solution-grown small-molecule organic semiconductor with enhanced crystal alignment and areal coverage for organic thin film transistors

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.4927577· OSTI ID:1286905
 [1];  [1];  [2];  [1]
  1. Univ. of Alabama, Tuscaloosa, AL (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Drop casting of small-molecule organic semiconductors typically forms crystals with random orientation and poor areal coverage, which leads to significant performance variations of organic thin-film transistors (OTFTs). In this study, we utilize the controlled evaporative self-assembly (CESA) method combined with binary solvent system to control the crystal growth. A small-molecule organic semiconductor,2,5-Di-(2-ethylhexyl)-3,6-bis(5"-n-hexyl-2,2',5',2"]terthiophen-5-yl)-pyrrolo[3,4-c]pyrrole-1,4-dione (SMDPPEH), is used as an example to demonstrate the effectiveness of our approach. By optimizing the double solvent ratios, well-aligned SMDPPEH crystals with significantly improved areal coverage were achieved. As a result, the SMDPPEH based OTFTs exhibit a mobility of 1.6 × 10-2 cm2/V s, which is the highest mobility from SMDPPEH ever reported.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1286905
Journal Information:
AIP Advances, Vol. 5, Issue 7; ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

References (38)

Conjugated Polymer-Mediated Polymorphism of a High Performance, Small-Molecule Organic Semiconductor with Tuned Intermolecular Interactions, Enhanced Long-Range Order, and Charge Transport journal October 2013
Controlled Deposition of Highly Ordered Soluble Acene Thin Films: Effect of Morphology and Crystal Orientation on Transistor Performance journal September 2009
Air-stable solution-processed n -channel organic thin film transistors with polymer-enhanced morphology journal May 2015
High-Performance Polymer-Small Molecule Blend Organic Transistors journal March 2009
Flexible active-matrix displays and shift registers based on solution-processed organic transistors journal January 2004
Humidity effect on electrical performance of organic thin-film transistors journal January 2005
Tailored Single Crystals of Triisopropylsilylethynyl Pentacene by Selective Contact Evaporation Printing journal June 2011
Enhanced Performance Consistency in Nanoparticle/TIPS Pentacene-Based Organic Thin Film Transistors journal July 2011
Switching phase separation mode by varying the hydrophobicity of polymer additives in solution-processed semiconducting small-molecule/polymer blends journal September 2013
Temperature gradient approach to grow large, preferentially oriented 6,13-bis(triisopropylsilylethynyl) pentacene crystals for organic thin film transistors
  • Asare-Yeboah, Kyeiwaa; Frazier, Rachel M.; Szulczewski, Greg
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 32, Issue 5 https://doi.org/10.1116/1.4893438
journal September 2014
Controlling Microstructure of Pentacene Derivatives by Solution Processing: Impact of Structural Anisotropy on Optoelectronic Properties journal August 2013
Solution-based 5,6,11,12-tetrachlorotetracene crystal growth for high-performance organic thin film transistors journal July 2015
Solution-processable pentacene microcrystal arrays for high performance organic field-effect transistors journal March 2007
High-Mobility Field-Effect Transistors from Large-Area Solution-Grown Aligned C60 Single Crystals journal January 2012
Controlled evaporative self-assembly of hierarchically structured bottlebrush block copolymer with nanochannels journal January 2011
Simple route to ridge optical waveguide fabricated via controlled evaporative self-assembly journal January 2011
Learning from “Coffee Rings”: Ordered Structures Enabled by Controlled Evaporative Self-Assembly journal December 2011
High-Mobility Organic Transistors Based on Single-Crystalline Microribbons of Triisopropylsilylethynyl Pentacene via Solution-Phase Self-Assembly journal March 2007
Crystalline film growth of TIPS-pentacene by double-shot inkjet printing technique journal April 2014
Novel poly(phenylene ethynylene)-type conjugated polymers containing diketopyrrolopyrrole or triphenylpyrazoline units in the main chain: synthesis, characterization and photophysical properties journal June 2009
Quinacridone-Diketopyrrolopyrrole-Based Polymers for Organic Field-Effect Transistors journal March 2013
A high-mobility terselenophene and diketopyrrolopyrrole containing copolymer in solution-processed thin film transistors journal January 2013
Systematic Investigation of Benzodithiophene- and Diketopyrrolopyrrole-Based Low-Bandgap Polymers Designed for Single Junction and Tandem Polymer Solar Cells journal June 2012
Nanomorphology influence on the light conversion mechanisms in highly efficient diketopyrrolopyrrole based organic solar cells journal January 2013
Diketopyrrolopyrrole-based small molecules with simple structure for high VOC organic photovoltaics journal December 2012
Diketopyrrolopyrrole (DPP)-based materials for organic photovoltaics journal January 2012
A low band gap, solution processable oligothiophene with a dialkylated diketopyrrolopyrrole chromophore for use in bulk heterojunction solar cells journal March 2009
Anisotropic charge transport and contact resistance of 6,13-bis(triisopropylsilylethynyl) pentacene field-effect transistors fabricated by a modified flow-coating method journal March 2012
A High Mobility P-Type DPP-Thieno[3,2-b]thiophene Copolymer for Organic Thin-Film Transistors journal August 2010
Electron deficient diketopyrrolopyrrole dyes for organic electronics: synthesis by direct arylation, optoelectronic characterization, and charge carrier mobility journal January 2014
Use of side-chain for rational design of n-type diketopyrrolopyrrole-based conjugated polymers: what did we find out? journal January 2014
Latent pigments activated by heat journal July 1997
Improving performance of TIPS pentacene-based organic thin film transistors with small-molecule additives journal January 2014
Air-flow navigated crystal growth for TIPS pentacene-based organic thin-film transistors journal October 2012
Capillary flow as the cause of ring stains from dried liquid drops journal October 1997
Contact line deposits in an evaporating drop journal July 2000
Azeotropic Binary Solvent Mixtures for Preparation of Organic Single Crystals journal November 2009
Inhomogeneity of Spin-Coated and Cast Non-Regioregular Poly(3-hexylthiophene) Films. Structures and Electrical and Photophysical Properties journal October 1998

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Long-range crystal alignment with polymer additive for organic thin film transistors journal June 2019
Nanoscale alignment of semiconductor crystals for high-fidelity organic electronics applications journal May 2019
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