Optical constants of zinc sulfide films determined from transmittance measurements

Durrani, S.M.A.; Al-Shukri, A.M.; Iob, Asfaha; Khawaja, E. E.

doi:10.1016/s0040-6090(00)01539-x

Cited by 45 publications

(21 citation statements)

References 12 publications

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“…It is known that bulk ZnS exhibits a high refractive index (n=2.36 at 620 nm) and has a low absorption coefficient over a broad range of wavelength, from 400 to 14000 nm [78] . Thus, it is of great significance to introduce ZnS NPs into polymer matrix to prepare high refractive index and transparent nanocomposites over a broad range of wavelength.…”

Section: In Situ Methods To Prepare Zns (Pbs) Np/polymer Composites Wimentioning

confidence: 99%

In situ preparation of nanoparticles/polymer composites

Sun

Yang

2008

Sci. China Ser. E-Technol. Sci.

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Nanoparticle (NP) is the matter between molecule and bulk material. It has attracted much attention in catalysis, optoelectronics and biology due to its unique physical and chemical properties. Incorporation of these NPs into the polymer matrix is one of the best methods to display their special functions, which not only stabilize the NPs but also realize the functional assembly of NPs and polymers. However, realization of this idea depends largely on the compatibility of NPs and polymers as well as the interaction between them. Therefore, many methods have been developed to prepare the composites of NPs and polymers in order to obtain the function expected. In this review, we mainly focus on the combination of in situ method with other methods to synthesize different functional one-dimension, two-dimension as well as bulk composites, which has been recently developed by our group. The most striking character of our method is the excellent compatibility between NPs and polymers which ensures a homogeneous distribution of NPs in the polymer matrix. The existence of the polymer network makes the NPs more stable, and is significant for displaying their functions. in situ, nanoparticle, polymer, composite, function The size of nanoparticles (NPs) is in the range of 1-100 nm, which is larger than the atom cluster but smaller than the powder. They are the matter between molecules and bulk materials. The decrease of their size donates them the quantum size effect, small size effect, surface effect as well as macroscopic quantum tunneling effect. They have found applications in catalysis, light filter, light absorption, charge transport, gas adsorption, etc. due to their unique properties [1][2][3][4][5][6][7][8][9][10][11][12][13] . However, they are too small to be used directly because of their large specific surface energies. Therefore, it is necessary to incorporate them into other matrix. One of the best choices is polymer. As the carrier of the NPs, the polymer can bring several advantages: (1) stabilize the NPs, limit their aggregation and hence protect their function; (2) improve the processibility of the composites; (3) enhance the SUN HaiZhu et al. Sci China Ser E-Tech Sci | Nov. 2008 | vol. 51 | no. 11 | 1886-1901 1887 functions of NPs by making use of the interaction between NPs and polymer, which is very important for the development of novel electronic devices with small size and light weight.The composites of NPs and polymer not only possess stability, excellent luminescent, electrical or magnetic properties of inorganic particles but also the convenience to tailor the structure, facility to process and low cost of organic molecules. Many methods to obtain composites have been developed. One of the earliest and easiest methods is directly mixing NPs into the polymer matrix [14][15][16][17][18] . In this method, the NPs are prepared before they are incorporated into the polymer matrix. The composites prepared via this method can find applications in electroluminescent devices, photovoltaic cells as we...

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Section: In Situ Methods To Prepare Zns (Pbs) Np/polymer Composites Wimentioning

confidence: 99%

In situ preparation of nanoparticles/polymer composites

Sun

Yang

2008

Sci. China Ser. E-Technol. Sci.

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“…Therefore, the optical constants ðn; a; kÞ can be determined from the reflectance and transmittance measurements by solving Eqs. (1)-(4) [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] at various combination conditions (the measurements from the front or back side, the normal or oblique or multiple angles incidence, the perpendicular or parallel polarized or unpolarized radiation). For three-layer semi-transparent structure, the measurements of the target layer were affected by two side window layers.…”

Section: Radiative Transfer Modelmentioning

confidence: 99%

“…The spectrophotometric method was wildly used to determine the optical constants of thin films from the reflectance and transmittance measurements based on the minimization process of the difference between the calculated and the measured values [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], or based on the interference fringe patterns process [24][25][26][27][28][29][30]. And various combinations of measured quantities at various conditions (the transmittance, the reflectance from the front or back side, the normal or oblique or multiple angles incidence, the perpendicular or parallel polarized radiation) can be used.…”

Section: Introductionmentioning

confidence: 99%

Measurement method for high-temperature infrared optical constants of ZnS crystal materials in a multi-layer structure

Liu

2015

Infrared Physics & Technology

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“…), активированные квантовыми точками (КТ), могут использоваться в качестве конвертеров излучения в лин-зах светодиодов, люминесцентных солнечных концен-траторах, декоративных элементах и других материалах и устройствах [1,2]. Одно из направлений использования КТ -био-и химические сенсоры [3], где они благодаря большим фотостабильности, эффективности излучения и чувствительности могут заменить другие материалы, например, органические красители. Повышение кван-товой эффективности излучения и стабильности КТ (например, легирование ZnS марганцем [4,5]), позволяет использовать такие материалы в электролюминесцент-ных устройствах в сочетании с органическими материа-лами.…”

Section: Introductionunclassified

Особенности наночастиц ZnCdS, синтезированных в различных растворителах

Кязым-заде¹,

Джафаров²,

Насиров³

et al. 2017

Физика И Техника Полупроводников

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Получены устойчивые коллоидные растворы наночастиц ZnCdS диаметром 3-6 нм в поливиниловом спирте, полиэтиленгликоле и H2O. Размер синтезированных наночастиц не зависел от соотношения прекурсоров. Показано, что стабилизация частиц обусловлена зарядовым фактором устойчивости и достигается в отсутствие дополнительных стабилизирующих добавок. Синтезированные квантовые точки ZnCdS излучают в широкой области спектра 450-600 нм. DOI: 10.21883/FTP.2017.04.44339.8308

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Optical constants of zinc sulfide films determined from transmittance measurements

Cited by 45 publications

References 12 publications

In situ preparation of nanoparticles/polymer composites

In situ preparation of nanoparticles/polymer composites

Measurement method for high-temperature infrared optical constants of ZnS crystal materials in a multi-layer structure

Особенности наночастиц ZnCdS, синтезированных в различных растворителах

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