Organophosphonate Self-Assembled Monolayers for Gate Dielectric Surface Modification of Pentacene-Based Organic Thin-Film Transistors:  A Comparative Study

McDermott, Joseph; McDowell, Matthew; Hill, Ian G.; Hwang, Jae-Yeol; Kahn, Antoine; Bernasek, Steven L.; Schwartz, Jeffrey

doi:10.1021/jp075177v

Cited by 49 publications

(49 citation statements)

References 32 publications

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“…In contrast, threshold voltage increased when using high-k materials such as Ta 2 O 5 , Si 3 N 4 and HfO 2 as shown in Figure 8(a). Some studies have shown that chemical modification using SAM or organic insulating materials on dielectric interfaces can induce low threshold voltage [15][16][17]. Klauk et al reported that positive threshold voltage was obtained using sputtered material [18].…”

Section: Resultsmentioning

confidence: 99%

Correlation between Physical and Electrical Properties in Pentacene and C8-BTBT-based Organic Thin Film Transistors

Shaari

Naka

Okada

2016

J. Photopol. Sci. Technol.

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Physical and electrical properties in pentacene and C8-BTBT-based organic thin film transistors (OTFTs) were investigated. Pentacene and C8-BTBT-based OTFTs were fabricated with various types of interfacial layer to the dielectric surface. Nine types of interfacial layers have been studied: without, CT4112, PMMA, CYTOP, OTS, HMDS, Ta 2 O 5 , Si 3 N 4 and HfO 2 . The physical and electrical properties of OTFTs including carrier mobility, threshold voltage, and on/off ratio were measured so that the relationship between the properties can be investigated. Strong correlation between contact angle and threshold voltage was confirmed. It was observed that high correlation coefficient (R) between contact angle and threshold voltage was 0.83 for the pentacene and 0.61 for C8-BTBT-based OTFTs. We also investigated correlation between XRD intensity and carrier mobility. Carrier mobility for pentacene-based OTFTs correlates with the XRD intensity (R=0.80). In contrast, carrier mobility for C8-BTBT-based OTFTs shows independency on XRD intensity (R=0.37).

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Section: Resultsmentioning

confidence: 99%

Correlation between Physical and Electrical Properties in Pentacene and C8-BTBT-based Organic Thin Film Transistors

Shaari

Naka

Okada

2016

J. Photopol. Sci. Technol.

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“…[239][240][241][242][243][244][245][246][247][248] For example, Forrest and co-workers observed major TFT mobility and I on :I off enhancement when using OTS-treated gate dielectrics in P5 TFTs, from 0.06 cm 2 ) over other devices using octadecylsilane and other phosphonates. [250] In this study, a new (anthracene)phosphonate SAM was reported (Fig. 14C), and compared to the other [238] explained OTFT performance enhancements related to P5 grain size using the multiple trapping and release model.…”

mentioning

confidence: 82%

Molecular Self‐Assembled Monolayers and Multilayers for Organic and Unconventional Inorganic Thin‐Film Transistor Applications

DiBenedetto¹,

Facchetti²,

Ratner³

et al. 2009

Advanced Materials

578

544

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Principal goals in organic thin‐film transistor (OTFT) gate dielectric research include achieving: (i) low gate leakage currents and good chemical/thermal stability, (ii) minimized interface trap state densities to maximize charge transport efficiency, (iii) compatibility with both p‐ and n‐ channel organic semiconductors, (iv) enhanced capacitance to lower OTFT operating voltages, and (v) efficient fabrication via solution‐phase processing methods. In this Review, we focus on a prominent class of alternative gate dielectric materials: self‐assembled monolayers (SAMs) and multilayers (SAMTs) of organic molecules having good insulating properties and large capacitance values, requisite properties for addressing these challenges. We first describe the formation and properties of SAMs on various surfaces (metals and oxides), followed by a discussion of fundamental factors governing charge transport through SAMs. The last section focuses on the roles that SAMs and SAMTs play in OTFTs, such as surface treatments, gate dielectrics, and finally as the semiconductor layer in ultra‐thin OTFTs.

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“…Molecular interaction with solid surfaces has attracted considerable attention in the scientific literature due its relevance to such areas as catalysis, 1 atmospheric pollution, 2 magnetic storage systems, 3 planetary science, 4 organic electronic materials, 5 soil contamination, 6 molecular information processing, 7 and geophysics. 8 Theoretical studies have often focused on model systems designed to explore adsorption of a single aliphatic or aromatic molecule.…”

Section: Introductionmentioning

confidence: 99%

Dynamic decomposition of aliphatic molecules on Al(111) fromab initiomolecular dynamics

2009

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Ab initio molecular dynamics based on density functional theory within the generalized gradient approximation was used to explore decomposition on Al͑111͒ of butanol-alcohol and butanoic-acid, two important boundary additives in Al processing. Each molecule was oriented with its functional group closest to the surface and then given an initial velocity toward the surface. Decomposition occurred upon collision with Al͑111͒ resulting in the formation of adhered fragments that represent the very initial stages in additive film formation during plastic deformation where nascent Al is liberated. Bonding interactions over the simulation time frames were explored with contours of the electron localization function. Results of the simulations were compared with existing experimental studies of chemical decomposition on clean Al surfaces and found to be in qualitative accord. The effects of other initial molecular orientations on decomposition were explored in ancillary calculations where the molecules were rotated through 90°and 180°prior to collision with Al͑111͒.

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Organophosphonate Self-Assembled Monolayers for Gate Dielectric Surface Modification of Pentacene-Based Organic Thin-Film Transistors: A Comparative Study

Cited by 49 publications

References 32 publications

Correlation between Physical and Electrical Properties in Pentacene and C8-BTBT-based Organic Thin Film Transistors

Correlation between Physical and Electrical Properties in Pentacene and C8-BTBT-based Organic Thin Film Transistors

Molecular Self‐Assembled Monolayers and Multilayers for Organic and Unconventional Inorganic Thin‐Film Transistor Applications

Dynamic decomposition of aliphatic molecules on Al(111) fromab initiomolecular dynamics

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