Dielectric properties of ten primary amines at microwave frequencies as a function of temperature

Solsona, F J Arcega; Forniés-Marquina, J.M.

doi:10.1088/0022-3727/15/9/024

Cited by 18 publications

(6 citation statements)

References 14 publications

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“…In the case of the 2D HOP, the dielectric constant exhibits a dielectric confinement between the low dielectric constant of the organic part and the high dielectric constant of the inorganic part (Fig 2.c). The 2.1 value obtained for the organic part compares well with experimental values reported around 2.2-2.3 37 . The dielectric constant of the inorganic part amounts 4.0 and is as expected lower than the one obtained for the bulk due to dielectric confinement.…”

Section: Infinite and Static Dielectric Constant Of 3d And Layered Hysupporting

confidence: 89%

“…4.a), the structure successively consists of 141nm TiO 2 , 350nm MAPbI 3 and 36nm HTM ended with Au anode. The basic parameters of each layer are shown in Table 1, with several permittivity of MAPbI 3 according to experimental measurements 37,38,39 and simulations 41 . The TiO 2 , MAPbI 3 and HTM are assumed to be intrinsic with unintentionally doping level equals to 1e19 42 , 1e15 43,44 and 3e18 45 .…”

Section: Dielectric Variation On Perovskite Top Cellmentioning

confidence: 99%

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Dielectric properties of hybrid perovskites and drift-diffusion modeling of perovskite cells

Pédesseau

Képénékian²,

Sapori

et al. 2016

SPIE Proceedings

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International audienceA method based on DFT is used to obtained dielectric profiles. The high frequency ε∞(z) and the static εs(z) dielectric profiles are compared for 3D, 2D-3D and 2D Hybrid Organic Perovskites (HOP). A dielectric confinement is observed for the 2D materials between the high dielectric constant of the inorganic part and the low dielectric constant of the organic part. The effect of the ionic contribution on the dielectric constant is also shown. The quantum and dielectric confinements of 3D HOP nanoplatelets are then reported. Finally, a numerical simulation based on the SILVACO code of a HOP based solar cell is proposed for various permittivity of MAPbI3

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Section: Infinite and Static Dielectric Constant Of 3d And Layered Hysupporting

confidence: 89%

Section: Dielectric Variation On Perovskite Top Cellmentioning

confidence: 99%

Dielectric properties of hybrid perovskites and drift-diffusion modeling of perovskite cells

Pédesseau

Képénékian²,

Sapori

et al. 2016

SPIE Proceedings

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“…The latter is in agreement with the experimental high frequency dielectric constant reported to be about 2.2-2.3. 26 Thus, if the size of the aliphatic chain affects the extent of the low dielectric constant zone, it does not seem to modify significantly the value of the constant itself.…”

Section: High Frequency Dielectric Profilementioning

confidence: 99%

“…[12][13][14][15][16][17][18][19][20] The shape given to HOP has an impact on its excitonic properties. 2D HOP are known to present a strong exciton binding energy 21 related to abrupt dielectric interfaces 22 and exhibit a quantum confinement of type I 23,24 with a dielectric confinement 22,25 attributed to the contrast between the low dielectric constant of the organic part 26 and the high dielectric constant of the inorganic part. 27 On the other hand, 3D HOP show an exciton screened by polar vibrational modes and disordered configurations of polar organic cations.…”

Section: Introductionmentioning

confidence: 99%

Quantum confinement and dielectric profiles of colloidal nanoplatelets of halide inorganic and hybrid organic–inorganic perovskites

et al. 2016

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Quantum confinement as well as high frequency ε∞ and static εs dielectric profiles are described for nanoplatelets of halide inorganic perovskites CsPbX3 (X = I, Br, Cl) and hybrid organic-inorganic perovskites (HOP) in two-dimensional (2D) and three-dimensional (3D) structures. 3D HOP are currently being sought for their impressive photovoltaic ability. Prior to this sudden popularity, 2D HOP materials were driving intense activity in the field of optoelectronics. Such developments have been enriched by the recent ability to synthesize colloidal nanostructures of controlled sizes of 2D and 3D HOP. This raises the need to achieve a thorough description of the electronic structure and dielectric properties of these systems. In this work, we go beyond the abrupt dielectric interface model and reach the atomic scale description. We examine the influence of the nature of the halogen and of the cation on the band structure and dielectric constants. Similarly, we survey the effect of dimensionality and shape of the perovskite. In agreement with recent experimental results, we show an increase of the band gap and a decrease of ε∞ when the size of a nanoplatelet reduces. By inspecting 2D HOP, we find that it cannot be described as a simple superposition of independent inorganic and organic layers. Finally, the dramatic impact of ionic contributions on the dielectric constant εs is analysed.

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“…Figure 1.7 gives relaxation frequency range for classical organic functions: alkanes [33,34], alcohols [35][36][37][38][39], alcohol ether [40], acid chlorides [41,42], esters [43,44], aliphatic [45][46][47][48][49][50][51][52][53][54] and aromatic halogens [55,56], aliphatic [57,58], aromatic ketones [59], nitriles [60], and aliphatic [61,62] and aromatic amines [63].…”

Section: Effect Of Imaginary Part: Dielectric Lossesmentioning

confidence: 99%

Microwave‐Material Interactions and Dielectric Properties, Key Ingredients for Mastery of Chemical Microwave Processes

Stuerga¹

2006

Microwaves in Organic Synthesis

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The main focus of the revised edition of this first chapter is essentially the same as the original -to explain in a chemically intelligible fashion the physical origin of microwave-matter interactions and, especially, the theory of dielectric relaxation of polar molecules. This revised version contains approximately 60% new material to scan a large range of reaction media able to be heated by microwave heating. The accounts presented are intended to be illustrative rather than exhaustive. They are planned to serve as introductions to the different aspects of interest in comprehensive microwave heating. In this sense the treatment is selective and to some extent arbitrary. Hence the bibliography contains historical papers and valuable reviews to which the reader anxious to pursue particular aspects should certainly turn.It is the author's conviction, confirmed over many years of teaching experience, that it is much safer -at least for those who rate not trained physicists -to deal intelligently with an oversimplified model than to use sophisticated methods which require experience before becoming productive. Because of comments about the first edition, however, the author has included more technical material to enable better understanding of the concepts and ideas. These paragraphs could be omitted, depending on the level of comprehension of the reader. They are preceded by two different symbols -k for TOOLS and j for CONCEPTS.After consideration of the history and position of microwaves in the electromagnetic spectrum, notions of polarization and dielectric loss will be examined. The orienting effects of electric fields and the physical origin of dielectric loss will be analyzed, as also will transfers between rotational states and vibrational states within condensed phases.Dielectric relaxation and dielectric losses of pure liquids, ionic solutions, solids, polymers and colloids will be discussed. Effect of electrolytes, relaxation of defects within crystals lattices, adsorbed phases, interfacial relaxation, space charge polarization, and the Maxwell-Wagner effect will be analyzed. Next, a brief overview of 1 thermal conversion properties, thermodynamic aspects, and athermal effects will be given.

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Dielectric properties of ten primary amines at microwave frequencies as a function of temperature

Cited by 18 publications

References 14 publications

Dielectric properties of hybrid perovskites and drift-diffusion modeling of perovskite cells

Dielectric properties of hybrid perovskites and drift-diffusion modeling of perovskite cells

Quantum confinement and dielectric profiles of colloidal nanoplatelets of halide inorganic and hybrid organic–inorganic perovskites

Microwave‐Material Interactions and Dielectric Properties, Key Ingredients for Mastery of Chemical Microwave Processes

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