Charge transport in phthalocyanine thin-film transistors coupled with Fabry–Perot cavities

Kang, Eul Son; Chen, Shangzhi; Đerek, Vedran; Hägglund, Carl; Głowacki, Eric Daniel; Jonsson, Magnus P.

doi:10.1039/d0tc05418f

Cited by 12 publications

(8 citation statements)

References 42 publications

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“…In perylene diimide field-effect transistors on plasmonic nanostructures, an order of magnitude enhancement in charge carrier mobility was observed and attributed to an enhanced carrier delocalization promoted by hybrid states . On the other hand, charge carrier mobilities in organic transistors based on donor–acceptor copolymers or phthalocyanines incorporated in resonant cavities were similar to those in control devices without the cavity structures. , Therefore, more work is needed to understand the polariton properties in organic semiconductors, their contribution to characteristics of organic (opto)electronic devices, and underlying mechanisms that determine (opto)electronic properties.…”

Section: Introductionmentioning

confidence: 83%

“…21 On the other hand, charge carrier mobilities in organic transistors based on donor−acceptor copolymers or phthalocyanines incorporated in resonant cavities were similar to those in control devices without the cavity structures. 22,23 Therefore, more work is needed to understand the polariton properties in organic semiconductors, their contribution to characteristics of organic (opto)electronic devices, and underlying mechanisms that determine (opto)electronic properties. Over the past decade, strong coupling has been demonstrated in a variety of organic materials, expanding the library of polaritonic materials well beyond traditional organic polaritonic systems involving J-aggregates dispersed in polymer films or gels.…”

Section: Introductionmentioning

confidence: 99%

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Exciton Polaritons Reveal “Hidden” Populations in Functionalized Pentacene Films

et al. 2021

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We present a systematic investigation of strong exciton− photon coupling in functionalized pentacene (TIPS-Pn)-based films in allmetal cavities, depending on molecular concentration and film morphology. Rabi splittings of up to 270 meV are observed, with the highest values achieved in pristine amorphous TIPS-Pn films. The exciton−photon interaction strength for the lowest-energy (0−0) excited state scaled with the square root of the molecular density, which was independent of whether the long-range molecular order were present in films. The molecular populations in the disordered regions of the films coupled to the cavity most strongly in all films, including pristine crystalline films. Such populations, with molecular configurations favoring interaction with the cavity electromagnetic field, were not readily identifiable in optical absorption spectra of bare (i.e., not coupled to the cavity) films, which highlights the capability of polariton spectroscopy to reveal these molecular ensembles, which are "hidden" in polycrystalline films. The linear scaling of the exciton−photon interaction strength with the square root of the oscillator strengths was observed in dilute TIPS-Pn:PMMA films but not in pristine TIPS-Pn films, either amorphous or crystalline. In particular, in pristine films, the exciton− photon interaction strength for the vibronic (0−m, m > 0) excitons was higher than expected based on the oscillator strengths extracted from the optical spectra of bare films, which was attributed to enhanced exciton delocalization facilitated by the 2D brickwork motif of TIPS-Pn. Similar observations were made in functionalized anthradithiophene (diF TES-ADT) films (also exhibiting a 2D brickwork packing motif) but not in functionalized tetracene (TIPS-Tc) films, which suggests that the underlying mechanisms rely on short-range intermolecular interactions determined by the molecular packing motif and resulting nanomorphology.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Exciton Polaritons Reveal “Hidden” Populations in Functionalized Pentacene Films

et al. 2021

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“…Such an example is the metal-free phthalocyanine strongly coupled to a metal-coated F–P cavity. In this instance, the authors attributed the absence of enhancement to the fact that the coupling strength (between 70 to 150 meV) had not reached a level considered sufficiently high, compared to the 700 meV coupling strength in the plasmonic structure results …”

Section: Molecular Reactions Modified By Strong Couplingmentioning

confidence: 96%

Section: Molecular Reactions Modified By Strong Couplingmentioning

confidence: 99%

Molecular Polaritons for Chemistry, Photonics and Quantum Technologies

Xiang,

Xiong

2024

Chem. Rev.

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Molecular polaritons are quasiparticles resulting from the hybridization between molecular and photonic modes. These composite entities, bearing characteristics inherited from both constituents, exhibit modified energy levels and wave functions, thereby capturing the attention of chemists in the past decade. The potential to modify chemical reactions has spurred many investigations, alongside efforts to enhance and manipulate optical responses for photonic and quantum applications. This Review centers on the experimental advances in this burgeoning field. Commencing with an introduction of the fundamentals, including theoretical foundations and various cavity architectures, we discuss outcomes of polariton-modified chemical reactions. Furthermore, we navigate through the ongoing debates and uncertainties surrounding the underpinning mechanism of this innovative method of controlling chemistry. Emphasis is placed on gaining a comprehensive understanding of the energy dynamics of molecular polaritons, in particular, vibrational molecular polaritons�a pivotal facet in steering chemical reactions. Additionally, we discuss the unique capability of coherent twodimensional spectroscopy to dissect polariton and dark mode dynamics, offering insights into the critical components within the cavity that alter chemical reactions. We further expand to the potential utility of molecular polaritons in quantum applications as well as precise manipulation of molecular and photonic polarizations, notably in the context of chiral phenomena. This discussion aspires to ignite deeper curiosity and engagement in revealing the physics underpinning polariton-modified molecular properties, and a broad fascination with harnessing photonic environments to control chemistry.

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“…Therefore, the formation of polaritonic states will have no obvious effect on the charge transport. This explains why only little attention has been devoted towards enhanced charge transport of organic semiconductors in the strong coupling regime [41][42][43][44].…”

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confidence: 99%

Organic charged polaritons in the ultrastrong coupling regime

Wang,

Mallick,

Kockum

et al. 2021

Preprint

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We embedded an all-hydrocarbon-based carbocation in a metallic microcavity that was tuned to resonance with an electronic transition of the carbocation. The measured Rabi splitting was 41 % of the excitation energy, putting the system well into the ultrastrong coupling regime. Importantly, due to the intrinsic charge on the carbocation, the polaritons that form carry a significant charge fraction (0.55 e0) and a large charge-to-mass ratio (∼ 2400 e0/m0). Moreover, the ground state of the ultrastrongly coupled system is calculated to carry about one percent of one elementary charge, implying a potentially enhanced charge transport across the molecules. These unique properties of our system, together with its convenient preparation, provide a practical platform to study charged polaritons in the ultrastrong coupling regime.

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Charge transport in phthalocyanine thin-film transistors coupled with Fabry–Perot cavities

Abstract: We investigate charge transport in ambipolar organic thin-film transistors coupled to a Fabry–Perot cavity.

Cited by 12 publications

References 42 publications

Exciton Polaritons Reveal “Hidden” Populations in Functionalized Pentacene Films

Exciton Polaritons Reveal “Hidden” Populations in Functionalized Pentacene Films

Molecular Polaritons for Chemistry, Photonics and Quantum Technologies

Organic charged polaritons in the ultrastrong coupling regime

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