Fullerene based materials for ultra-low-k application

Broczkowska, Katarzyna; Klocek, Jolanta; Friedrich, Daniel; Henkel, Karsten; Kolanek, Krzysztof; Urbanowicz, Adam; Schmeißer, Dieter; Miller, M.; Zschech, Ehrenfried

doi:10.1109/stysw.2010.5714165

Cited by 5 publications

(6 citation statements)

References 24 publications

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“…Firstly, we shortly reflect the hysteresis inside the CV measurements which we observed in all of our investigated siloxane-based films [10][11][12]15]. Figure 2 Obviously, in agreement with our previous reports [11,12], the hysteresis of the pure APTMS film is much higher than in the CuPc/PCBM/POSS incorporated film.…”

Section: Hysteresis Inside CV Characterizationsupporting

confidence: 86%

Annealing Influence on Siloxane-Based Materials Incorporated with Fullerenes, Phthalocyanines, and Silsesquioxanes

et al. 2012

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We have studied the heat treatment influence (room temperature to 400°C) on thin aminopropyltrimethoxysilane (APTMS)-based films incorporated with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), copper phthalocyanine (CuPc), and three-dimensional structure cage polyhedral oligomeric silsesquioxanes (POSS) by X-ray photoelectron spectroscopy and capacitance voltage technique. We discuss the interplay between the temperature degradation of the organic components (aminopropyl groups, sp 3 -based carbon bonds of APTMS, cyclopentyl rings, and vinyl functional group of POSS) and the thermal stability of the fullerene molecules (PCBM), benzene rings (CuPc), and the POSS inorganic cages. We observe the formation of Si-O-Si bridges between the POSS inorganic cages and the SiO 2 -enriched matrix which contains also fullerene molecules and benzene rings.

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Section: Hysteresis Inside CV Characterizationsupporting

confidence: 86%

Annealing Influence on Siloxane-Based Materials Incorporated with Fullerenes, Phthalocyanines, and Silsesquioxanes

et al. 2012

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“…Satellites are visible on the higher binding energy side (2)(3)(4)(5), which are characteristic for PCBM [14]. The two [15].…”

Section: Resultsmentioning

confidence: 99%

“…Fullerenes are also extensively investigated for ultra lowk investigations because of ability to form porous frameworks [3][4][5]. Replacing C 60 with the better soluble derivative PCBM showed positive effects on the reduction of the dielectric constant [4,5].…”

Section: Introductionmentioning

confidence: 99%

Valence and Conduction Band States of PCBM as Probed by Photoelectron Spectroscopy at Resonant Excitation

2012

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We have studied (6,6)-phenyl C 61 butyric acid methyl ester by near-edge X-ray absorption fine structure and resonant synchrotron radiation X-ray photoelectron spectroscopy. We determine the binding/hybridization character of the participating valence and conduction band states involving π* or σ* empty conduction band states. The analysis of the resonant Auger processes delivers a powerful tool to distinguish σ* and π* states in organic sp 2 hybridized systems. For the σ* states, we find the conventional KLL Auger process creating a C2p 4 final state. However, for the π* features right at the resonance, we identify a novel Auger decay mechanism. We attribute this process to the decay of an excitonic intermediate state with a long lifetime which causes a three-hole (C2p 3 ) final state.

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“…Numerous studies have shown that fullerenes are considered as promising candidates for design of low k dielectrics [54][55][56][57]. On the other hand the studies of dielectric properties of carbon nanotubes indicated the potential of these structures to be the basis for high k dielectrics.…”

Section: Dielectric Constantmentioning

confidence: 99%

Aromaticity, response, and nonlinear optical properties of sumanene modified with boron and nitrogen atoms

2014

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We investigated the effects of substitution on the sumanene benzylic CH2 groups with BH and NH groups using density functional theory computations. Our study shows that various properties of sumanene could be finely tuned for the application in the areas closely related to the materials science. Structural properties are significantly altered with such modifications and other properties as well. Charge distributions were evaluated through natural population analysis (NPA), while stability of investigated structures was investigated using quantum molecular descriptors. Using molecular orbital analysis further insight into the effects of substitution was obtained. Potential of sumanene as a candidate for application in the field of organic electronics is assessed through calculations of exciton binding energy. Non-linear optical properties of investigated structures were investigated using the first hyperpolarizability tensor. Special attention was paid to the aromaticity of sumanene. This property was evaluated employing NICS parameter while for detailed study of obtained results we used NBO and NBOdel analysis.

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Fullerene based materials for ultra-low-k application

Cited by 5 publications

References 24 publications

Annealing Influence on Siloxane-Based Materials Incorporated with Fullerenes, Phthalocyanines, and Silsesquioxanes

Annealing Influence on Siloxane-Based Materials Incorporated with Fullerenes, Phthalocyanines, and Silsesquioxanes

Valence and Conduction Band States of PCBM as Probed by Photoelectron Spectroscopy at Resonant Excitation

Aromaticity, response, and nonlinear optical properties of sumanene modified with boron and nitrogen atoms

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