Organic/inorganic-doped aromatic derivative crystals: Growth and properties

Stanculescu, Florin; Ioniţă, Iulian; Stănculescu, Anca

doi:10.1016/j.jcrysgro.2014.01.056

Cited by 6 publications

(21 citation statements)

References 16 publications

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“…The unit cell contains four molecules and has the following dimensions: a = 13.20 Å, b = 13.97 Å and c = 3.80 Å. The transparency range of m-DNB crystalline materials is 0.4-2.5 μm [16,17,19]. Bz (C 6 H 5 COCOC 6 H 5 ) is an uni-axial crystal that belongs to the trigonal space group P3 1 2 1 and the point symmetry group D 3 4 (D 3 6 ).…”

Section: Introductionmentioning

confidence: 99%

“…The unit cell contains three molecules which are helically disposed and closely packed around the 31 axis and the hexagonal unit cell has the following dimensions: a = 8.42 Å and b = 13.75 Å. The transparency range of Bz crystalline materials is from UV through near IR [18,19].…”

Section: Introductionmentioning

confidence: 99%

“…Pure m-DNB and Bz crystals have been grown from the melt by the Bridgman-Stockbarger method using the same experimental set-up and the same experimental conditions defined by a temperature gradient (∆T) of 25°C cm -1 and growth speed (v) of 1.7 mm h -1 [19]. The crystal of m-DNB doped with iodine has also been grown in the same experimental set-up and the same experimental conditions such as the crystal of Bz doped with iodine or m-DNB: ∆T = 30°C cm -1 and v = 2.0 mm h -1 [19].…”

Section: Introductionmentioning

confidence: 99%

“…We have developed some studies about the influence of the crystal growth conditions on the incorporation of dopant and the effect of dopant on the optical properties of pure m-DNB and Bz crystals. We have analysed the two aromatic derivatives crystals from two different perspectives: (1) the effect of iodine (I 2 ) dopant concentration (1 wt% and 2 wt%) on the two different matrix (m-DNB and Bz) and (2) the behaviour of the same aromatic derivative, m-DNB, as matrix and dopant [19].…”

Section: Introductionmentioning

confidence: 99%

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Organic Semiconductors for Non-Linear Optical Applications

Stănculescu¹,

Stanculescu²

2015

Optoelectronics - Materials and Devices

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The organic molecules represent a promising research field because they show special properties which are determined by the conjugated system of π electrons and the groups substituted to the aromatic nucleus offering perspectives for a large area of applications, including the non-linear optics.We have investigated two types of molecular crystalline material prepared from aromatic derivatives, meta-dinitrobenzene (m-DNB) and benzil (Bz), and three types of organic thin films prepared from arylenevinylene (triphenylamine, carbazole) compounds, maleimidic derivatives and anilinic derivatives functionalised copolymers using different methods (matrix-assisted pulsed laser evaporation, vacuum evaporation, spin coating). The effect of the experimental conditions on the morphological and structural particularities of the films has been emphasised. New results are bought about the systems formed from an aromatic derivative (m-DNB and benzil) crystal and inorganic (organic) dopant studied from the point of view of the dopant incorporation considering the stability of the growth interface and its effect on the optical band gap and optical non-linear (ONL) properties of the m-DNB and Bz crystals. The relationship between the morphology and structural order of the maleimidic derivatives monomers in polycarbonate matrix composite layer and the ONL properties is discussed. We analysed the correlation between the molecular structure of organic compound, particularities of the macroscopic order (influenced by the crystal growth and thin-film deposition methods) and optical non-linear (second harmonic generation, two-photon fluorescence) properties.The aromatic derivatives such as meta-dinitrobenzene (m-DNB) and benzil (Bz) are organic compounds of interest in preparing bulk crystal materials showing large transparency domain,

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Organic Semiconductors for Non-Linear Optical Applications

Stănculescu¹,

Stanculescu²

2015

Optoelectronics - Materials and Devices

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“…It has also been elucidated that on doping with Succinic acid, the SHG efficiency has been considerably increased. Moreover dopants are playing a major role in enhancing and altering the properties of organic single crystals [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

The effect of succinic acid on the physico-chemical characterization studies of benzil NLO single crystal

Gilda

Selvaraj

Devarajan

2015

Optik

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Effect of heavy ions irradiation on the properties of benzil crystals

Stanculescu

Socol

Matei

et al. 2017

Crystal Research and Technology

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Thick slices mechanically polished cut from a pure benzil ingot grown from melt in a modified Bridgman-Stockbarger configuration were irradiated with Ni ions having a specific energy of 11.4 MeV/u at different fluences. The effect of radiation on the properties of bulk benzil has been investigated. The chemical structure was not substantially affected as shown by infrared spectrum. The changes induced on the disorder degree have been evaluated from the Urbach law and X Ray Diffraction measurements. The morphology and surface topography have been analyzed emphasising a decrease in the size of granules and an increase in the surface roughness by irradiation. No effect of irradiation on the photoluminescence emission and optical nonlinear properties has been evidenced. These results recommend benzil as candidate for applications in space technology.

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Organic/inorganic-doped aromatic derivative crystals: Growth and properties

Cited by 6 publications

References 16 publications

Organic Semiconductors for Non-Linear Optical Applications

Organic Semiconductors for Non-Linear Optical Applications

The effect of succinic acid on the physico-chemical characterization studies of benzil NLO single crystal

Effect of heavy ions irradiation on the properties of benzil crystals

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