Crystalline rubrene <i>via</i> a novel process and realization of a pyro-phototronic device with a rubrene-based film

Gogoi, Deepshikha; Hussain, Amreen A.; Biswasi, Sweety; Pal, Arup R.

doi:10.1039/d0tc00857e

Cited by 16 publications

(6 citation statements)

References 34 publications

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“…[23][24][25] The organic rubrene crystal usually exhibits the largest hole mobility (µ h ) of 40.0 cm 2 •V −1 •s −1 , which is traced back to the light effective mass and delocalized nature of the holes in the highest occupied molecular orbital (HOMO) of rubrene crystal. [23,[25][26][27] In theory, integration of such an organic rubrene crystal with traditional Si semiconductor can provide the possibility of forming a high-quality organic/inorganic van der Waals heterostructure with the type-II (staggered) band alignment due to the transfer behaviors of majority carriers on the interface. [28,29] Furthermore, the interlayer electron excitons can be realized in this organic/inorganic hybrid heterostructure of rubrene/Si with much longer lifetime because of the type-II band alignment configuration.…”

Section: Introductionmentioning

confidence: 99%

High-performance self-powered photodetector based on organic/inorganic hybrid van der Waals heterojunction of rubrene/silicon*

Zhou

Yin

et al. 2021

Chinese Phys. B

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Organic/inorganic hybrid van der Waals heterostructure with an atomically abrupt interface has attracted great research interests within the field of multifunctional electronic and optoelectronic devices. The integration of organic rubrene films with inorganic Si semiconductors can avoid the atomic mutual-diffusion at the interface, and provide the possibility of forming two-dimensional van der Waals heterojunction accompanied with the type-II energy band alignment, due to the transfer behaviors of majority carriers at the interface. In this study, the high-quality rubrene/Si van der Waals heterostructure with an electronically abrupt junction was prepared, and a self-powered photodetector was then constructed based on this hybrid heterojunction. The photodetector demonstrated an excellent switching response to the 1064 nm monochromatic light with large on/off current ratio of 7.0 × 103, the maximum photocurrent of 14.62 mA, the maximum responsivity of 2.07 A/W, the maximum detectivity of 2.9 × 1011 Jones, and a fast response time of 13.0 μs. This study offers important guidance for preparing high-quality rubrene/Si hybrid van der Waals heterostructure with desirable band alignment, and the designed heterojunction photodetector has an important application prospect in the field of multifunctional optoelectronics.

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Section: Introductionmentioning

confidence: 99%

High-performance self-powered photodetector based on organic/inorganic hybrid van der Waals heterojunction of rubrene/silicon*

Zhou

Yin

et al. 2021

Chinese Phys. B

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“…Moreover, while the majority of pyroelectrics used to date have been based on noncentrosymmetric crystals, there is potential to engineer the interface, where the number of atoms can be too small to form a sufficiently thick polar layer for the accumulation of neutralization and depolarization screening charges. In this context, recent studies have shown that centrosymmetric crystals can also exhibit pyroelectric effects at their surfaces/interfaces, [84,[122][123][124][125] revealing a new route to combine plasmonic and pyroelectric effects. It is worth considering the electrochemical interactions between the plasmonic and pyroelectric constituents, where these interactions provide intriguing opportunities for photo-catalysis, [108] bio-applications, water splitting, and water treatment.…”

Section: Discussionmentioning

confidence: 99%

Plasmonic‐Pyroelectric Materials and Structures

Wang,

Bowen,

Valev

2024

Adv Funct Materials

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With the growing global energy crisis, research into new energy materials that can potentially transfer heat into electricity has become a worldwide imperative. Pyroelectric materials are polar materials that are able to produce electrical charge in response to temperature change. These materials are of interest for infrared sensing, energy harvesting, and emerging applications in chemistry and biology. However, unlocking their potential requires the temperature changes to be both large and rapid. To achieve this goal, pyroelectric materials can be used in synergy with plasmonic nanomaterials, which provide highly localized and rapid heating upon illumination at the plasmonic resonances. Plasmonic‐pyroelectric combinations are therefore being used for a variety of electrical, thermal, electrochemical, and biological studies and are inspiring new technological applications. In this review, the underlying mechanisms of the pyroelectric and plasmonic effects are introduced and the benefits of combining them are outlined. A range of applications is then overviewed. Critical challenges and future perspectives to further develop the underlying science of these systems and to create highly efficient plasmonic‐pyroelectric materials and structures are discussed.

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“…Reduced surface roughness of crystalline OS layers have been obtained by polymer-smoothing techniques [ 14 ]. The solvent-free fabrication of a composite film, consisting of crystalline RB and polymerized aniline, was reported by Gogoi et al [ 15 ], who applied a 13.7 MHz RF discharge for plasma polymerization of the aniline-RB vapor mixture at low pressure (2 × 10 − 2 Torr) and demonstrated an optoelectronic device with crystalline RB responsible for a coupled effect of pyro-phototronic and photovoltaic processes.…”

Section: Introductionmentioning

confidence: 99%

Rubrene Thin Films with Viably Enhanced Charge Transport Fabricated by Cryo-Matrix-Assisted Laser Evaporation

et al. 2021

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Among organic semiconductors, rubrene (RB; C42H28) is of rapidly growing interest for the development of organic and hybrid electronics due to exceptionally long spin diffusion length and carrier mobility up to 20 cm2V−1s−1 in single crystals. However, the fabrication of RB thin films resembling properties of the bulk remains challenging, mainly because of the RB molecule’s twisted conformation. This hinders the formation of orthorhombic crystals with strong π–π interactions that support the band transport. In this work, RB films with a high crystalline content were fabricated by matrix-assisted laser evaporation and the associated structure, composition, and transport properties are investigated. Enhanced charge transport is ascribed to the crystalline content of the film. Spherulitic structures are observed on top of an amorphous RB layer formed in the initial deposition stage. In spherulites, orthorhombic crystals dominate, as confirmed by X-ray diffraction and the absorption and Raman spectra. Surprisingly, nanowires several microns in length are also detected. The desorption/ionization mass and X-ray photoelectron spectra consistently show minimal material decomposition and absence of RB peroxides. The observed carrier mobility up to 0.13 cm2V−1s−1, is close to the technologically accepted level, making these rubrene films attractive for spintronic and optoelectronic applications.

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Crystalline rubrene via a novel process and realization of a pyro-phototronic device with a rubrene-based film

Abstract: A single-step solvent-free process for crystalline rubrene film where surface layer polarization results in the pyro-phototronic effect.

Cited by 16 publications

References 34 publications

High-performance self-powered photodetector based on organic/inorganic hybrid van der Waals heterojunction of rubrene/silicon*

High-performance self-powered photodetector based on organic/inorganic hybrid van der Waals heterojunction of rubrene/silicon*

Plasmonic‐Pyroelectric Materials and Structures

Rubrene Thin Films with Viably Enhanced Charge Transport Fabricated by Cryo-Matrix-Assisted Laser Evaporation

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