Structural and optical properties of ZnO thin films deposited onto ITO/glass substrates

Rusu, M.; Rusu, G.I.; Gîrtan, Mihaela; Dabos‐Seignon, Sylvie

doi:10.1016/j.jnoncrysol.2008.06.070

Cited by 23 publications

(7 citation statements)

References 22 publications

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“…Fluorozirconate RE doped ZBLA glasses with molar composition 57ZrF 4 -34BaF 2 -5LaF 3 -4AlF 3 -0.5PrF 3 -xYbF 3 (from x = 0 to 10) were synthesized by a melting and quenching method starting from high purity fluorides (purity > 99.9%). The fluoride components were mixed and melted at 875°C for 10 min in a dry glove box (H 2 O = 1 ppm) under inert atmosphere (argon).…”

Section: Methodsmentioning

confidence: 99%

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Studies on Pr3+–Yb3+ codoped ZBLA as rare earth down convertor glasses for solar cells encapsulation

et al. 2015

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Section: Methodsmentioning

confidence: 99%

“…For the industrial development of photovoltaic solar panels, many aspects should be taken into account such as: the materials and technology costs [1][2][3][4][5][6][7][8][9], the lifetime of materials and devices [10][11], the solar cells efficiency and the quality of encapsulation materials.…”

Section: Introductionmentioning

confidence: 99%

Studies on Pr3+–Yb3+ codoped ZBLA as rare earth down convertor glasses for solar cells encapsulation

et al. 2015

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“…The use of nanocoatings with spectral selective properties for improving energy efficiency in buildings fenestration, photovoltaics including BIPV systems is nowadays an area of increasing interest [1][2][3][4]. Nanocoatings based on Indium Tin Oxide (ITO) are preferred for their high transparency in the visible region and good electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of ITO nanocoatings for photovoltaic and energy building applications

Kaplani¹,

Kaplanis²,

Panagiotaras³

et al. 2014

AIP Conference Proceedings

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Targeting energy savings in buildings, photovoltaics and other sectors, significant research activity is nowadays focused on the production of spectral selective nanocoatings. In the present study an ITO coating on glass substrate is prepared from ITO powder, characterized and analysed. The spectral transmittance and reflectance of the ITO coated glass and of two other commercially developed ITO coatings on glass substrate were measured and compared. Furthermore, a simulation algorithm was developed to determine the optical properties of the ITO coatings in the visible, solar and near infrared regions in order to assess the impact of the ITO coatings in the energy performance of buildings, and particularly the application in smart windows. In addition, the current density produced by a PV assuming each of the ITO coated glass served as a cover was computed, in order to assess their effect in PV performance. The preliminary ITO coating prepared and the two other coatings exhibit different optical properties and, thus, have different impact on energy performance. The analysis assists in a better understanding of the desired optical properties of nanocoatings for improved energy performance in PV and buildings

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“…In order to characterize the evolution of this (000l) texture, we consider the intensity ratio I 0002 /I 1011 . [56][57][58] Here I 0002 and I 1011 are the intensities of (0002) and (1011) diffraction lines. The ZnO (1011) line has been selected due to the fact that is the strongest XRD line for standard ZnO powder with no preferred orientation.…”

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confidence: 99%

The Effect of a Sputtered Al-Doped ZnO Seed Layer on the Morphological, Structural and Optical Properties of Electrochemically Grown ZnO Nanorod Arrays

Campo¹,

Navarrete-Astorga

Pereyra³

et al. 2016

J. Electrochem. Soc.

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The effect of both a RF sputtered Al-doped ZnO (AZO) thin film seed layer onto a FTO/glass substrate and its growth time onto the morphological, structural and optical properties of the resulting electrochemically grown ZnO nanorod arrays (NRAs) have been studied. ZnO NRs grown onto the different AZO seed layers exhibit smaller mean diameter and length than those grown onto a bare FTO/glass substrate, but ZnO NR density presents an opposite behavior, by using an AZO seed layer ZnO nanorod density can be increased by a factor of six. ZnO nanorods are highly crystalline with a wurtzite hexagonal structure and with a preferential growth perpendicular to the substrate. The c-axis of most of the ZnO NRs grown onto an AZO seed layer is aligned within ±6 • from the substrate surface normal. Both NRAs mean length and density increases light scattering, without greatly affecting the spectra shape. The diffuse reflectance intensity is more sensitive to NR density variations than to length or diameter variations. NR diameter affects directly the shape of these diffuse reflectance spectra: they red-shifts and broadens when NR mean diameter increases. A small influence in the UV edge due to size quantization may be also present. In recent years, ZnO, a wide bandgap semiconductor with a direct bandgap of about 3.37 eV and high exciton binding energy (60 meV) at room temperature, has attracted increasing interest due to its unique ability to form a variety of nanostructures such as nanowires, nanorods, nanobelts, nanocombs, nanospheres, nano-tetrapods.1,2 Among them, the most interesting are nanorods and nanorod arrays (NRAs) vertically arranged with respect to the substrate.1 These ZnO nanostructures present a pseudo-one dimensional (1D) structure, with an enhanced surface-to-volume ratio and confinement effects.3 ZnO nanorods exhibit fewer defects than its thin-film structure, it is, therefore, a promising material for optoelectronic applications. 4 In fact, recently, single crystal ZnO nanowire and nanorod arrays have emerged as promising building blocks for a new generation of devices in different hi-tech domains such as optoelectronics, gas sensing, field emission, piezoelectrics and solar cells. 2,5,6 In particular, ZnO one dimensional nanostructures are good candidates for photovoltaic applications for three straightforward reasons: i) they have a low reflectivity that enhances the light absorption; ii) relatively high surface to volume ratio that enables interfacial charge separation and iii) fast electron transport along the crystalline 1D nanostructures that improves the charge collection efficiency. In fact, ZnO arrays of 1D nanostructures, such as nanowires and nanotubes, have been widely utilized as they provide a direct conduction pathway for the rapid collection of the photogenerated electrons, 7 reducing the non-radiative recombination and carrier scattering loss dramatically, 8 and providing as well a high junction area.9,10 Moreover, electron transport in the crystalline nanorod is expected to be several orde...

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Structural and optical properties of ZnO thin films deposited onto ITO/glass substrates

Cited by 23 publications

References 22 publications

Studies on Pr3+–Yb3+ codoped ZBLA as rare earth down convertor glasses for solar cells encapsulation

Studies on Pr3+–Yb3+ codoped ZBLA as rare earth down convertor glasses for solar cells encapsulation

Optical properties of ITO nanocoatings for photovoltaic and energy building applications

The Effect of a Sputtered Al-Doped ZnO Seed Layer on the Morphological, Structural and Optical Properties of Electrochemically Grown ZnO Nanorod Arrays

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