Growth of thin rubrene single crystals from 1-propanol solvent

Matsukawa, T.; Yoshimura, Masashi; Sasai, Kenichi; Uchiyama, M.; Yamagishi, Masakazu; Tominari, Yukihiro; Takahashi, Yoshinori; Takeya, J.; Kimura, Yasuo; Mori, Yusuke; Sasaki, T.

doi:10.1016/j.jcrysgro.2009.10.048

Cited by 56 publications

(56 citation statements)

References 19 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In light of this complication, the elucidation of charge transport efficacy between polymorphs has largely been limited to comparisons of transistor mobilities in which polymorphic single crystals are specifically oriented with π‐stacking in the direction of intended charge transport. In this context, single‐crystal transistors of orthorhombic rubrene exhibit device mobilities that are an order of magnitude higher along [010] than those of triclinic rubrene along [100] . Devices comprising β‐crystals of dihexyl‐substituted dibenzo[d,d′[thieno[3,2‐b;4,5‐b′]dithiophenes, C6‐DBTBT, exhibit mobilities that are twice as high as those comprising its α‐crystals, with this difference in mobility attributed to a decrease in the effective mass along the b ‐axis of the β‐crystals compared to the a ‐axis of the α‐crystals .…”

Section: Introductionmentioning

confidence: 99%

Understanding Polymorph Transformations in Core‐Chlorinated Naphthalene Diimides and their Impact on Thin‐Film Transistor Performance

Purdum

Yao

Woll

et al. 2015

Adv Funct Materials

View full text Add to dashboard Cite

Though charge transport is sensitive to subtle changes in the packing motifs of molecular semiconductors, research addressing how intermolecular packing influences electrical properties has largely been carried out on single‐crystals, as opposed to the more technologically relevant thin‐film transistors (TFTs). Here, independent and reversible access to the monoclinic and triclinic crystal structures of a core‐chlorinated naphthalene tetracarboxylic diimide (NTCDI‐1) is demonstrated in polycrystalline thin films via post‐deposition annealing. Time‐resolved measurements of these transitions via UV–visible spectroscopy and grazing‐incidence X‐ray diffraction indicate that the polymorphic transformations follow second‐order Avrami kinetics, suggestive of 2D growth after initial nucleation. Thin‐film transistors comprising triclinic NTCDI‐1 consistently outperform those comprising its monoclinic counterpart. This behavior contrasts that of single‐crystal transistors in which devices comprising monoclinic crystals are consistently superior to devices with triclinic crystals. This difference is attributed to more uniform in‐plane charge transport in polycrystalline thin films having the triclinic compared to the monoclinic polymorph. As the mobility of TFTs is a reflection of ensemble‐average charge transport across crystalline grains having different molecular orientations, this study suggests that among different polymorphs of a particular molecular semiconductor, those with smaller in‐plane anisotropy are more beneficial for efficient lateral charge transport in polycrystalline devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Understanding Polymorph Transformations in Core‐Chlorinated Naphthalene Diimides and their Impact on Thin‐Film Transistor Performance

Purdum

Yao

Woll

et al. 2015

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Polymorphism offers an opportunity to tailor the molecular packing of a material, without affecting its chemical components. For example, rubrene can crystallize into three crystalline polymorphs, including an orthorhombic, a triclinic, and a monoclinic phase (Figure 1a) [28][29][30]. Taking advantage of polymorphism, it is possible to fabricate OFETs from the same organic semiconductor but with different polymorphs, hence, with different properties (Figure 1b).…”

Section: The Role Of Polymorphism In Ofetmentioning

confidence: 99%

“…Importantly, by measuring charge transport performance in OFETs from different polymorphs, a direct relationship between molecular packing and charge transport can be established. Thus, many investigations on charge transport in different polymorphs have been performed in thin-film transistors, including some benchmark organic semiconductors like pentacene derivatives [15,31,32], rubrene [28][29][30], sexithiophene (6T) [33][34][35][36], and [1]benzothieno [3,2-b] [1]benzothiophene (BTBT) derivatives [10,37,38]. However, the different factors affecting the device performance, including crystallinity, grain size, and grain boundaries, are difficult to be eliminated in thin-film transistors.…”

Section: The Role Of Polymorphism In Ofetmentioning

confidence: 99%

Crystal Polymorph Control for High-Performance Organic Field-Effect Transistors

Fan¹,

Zhang²

2020

Integrated Circuits/Microchips

View full text Add to dashboard Cite

Organic molecules are assembled together by weak non-covalent intermolecular interactions in solid state. Multiple crystalline packing states (crystal polymorphism) have commonly existed in the active layer for organic field-effect transistors (OFETs). Different polymorphs, even with the slightest changes in their molecular packing, can differ the charge transport mobility by orders of magnitude. Therefore, accessing new polymorphs can serve as a novel design strategy for attaining high device performance. Here, we review the state of the art in this emerging field of crystal polymorph control. We firstly introduce the role of polymorphism and the methods of polymorph control in organic semiconductors. Then we review the latest studies on the performance of polymorphs in OFET devices. Finally, we discuss the advantages and challenges for polymorphism as a platform for the study of the relationship between molecular packing and charge transport.

show abstract

“…The single crystals, orthorhombic from, grown using the solution slow cooling technique exhibited high hole mobilities of up to 1.6 cm 2 /(V s), while monoclinic form, showed lower carrier mobili ties of 0.1 cm 2 /(V s) [38].…”

Section: Rubrene and Its Derivativesmentioning

confidence: 99%

Recent trends in crystal engineering of high-mobility materials for organic electronics

Yassar

2014

Polym. Sci. Ser. C

View full text Add to dashboard Cite

Acenes and heteroacenes are receiving great attention in fundamental and applied science due to their interesting optoelectronic and charge transport properties. Their easy synthesis and functionalization have enabled the rapid development of a large number of molecular materials with remarkable charge trans port properties. This perspective provides an overview of their fundamental properties, molecular pack ing/morphology and charge transport properties and summarizes the progress made in recent years in the development of new high mobility small molecule materials focusing in particular on crystalline materials that have been able to approach or surpass mobilities of amorphous silicon.

show abstract

Growth of thin rubrene single crystals from 1-propanol solvent

Cited by 56 publications

References 19 publications

Understanding Polymorph Transformations in Core‐Chlorinated Naphthalene Diimides and their Impact on Thin‐Film Transistor Performance

Understanding Polymorph Transformations in Core‐Chlorinated Naphthalene Diimides and their Impact on Thin‐Film Transistor Performance

Crystal Polymorph Control for High-Performance Organic Field-Effect Transistors

Recent trends in crystal engineering of high-mobility materials for organic electronics

Contact Info

Product

Resources

About