Pulsed Laser Deposition of Indium Tin Oxide Thin Films on Nanopatterned Glass Substrates

Socol, Marcela; Preda, N.; Rasoga, Oana; Costas, Andreea; Stănculescu, Anca; Breazu, C.; Gherendi, F.; Socol, G.

doi:10.3390/coatings9010019

Cited by 37 publications

(33 citation statements)

References 46 publications

(66 reference statements)

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“…7 c) and nano-patterned (Fig. 7 d) glass substrates present a characteristic band of this oxide overlapped on the one linked to the glass with the maximum at ~ 410 nm 25 . Regardless the substrates, only the PL spectra of the uracil films reveal its characteristic emission band with maximum at ~ 510 nm, assigned to the de-excitation from the first triplet excited state T 1 to ground state S 0 , as a shoulder (Fig.…”

Section: Resultsmentioning

confidence: 90%

“…The transparent conductor electrode (thickness ~ 340 nm), indium thin oxide-ITO (SCI Engineered Materials Inc.) was deposited on flat and nano-patterned glass substrates by Pulsed Laser Deposition (PLD) technique using an excimer laser source with krypton fluoride (Coherent, ComplexPro 205, λ = 248 nm, FWHM = 25 ns) involving the following parameters: 1.2 J/cm 2 for the laser fluence, 1.5 × 10 −2 mbar for the oxygen pressure, 7000 for the number of laser pulses and 5 cm for the distance between the target and the substrate. More details regarding the ITO deposition and properties of the obtained TCE layer are given in our previous work 25 .…”

Section: Methodsmentioning

confidence: 99%

“…For the fabrication of any electronic device based on organic thin films, it is important to study not only the materials used as active layer(s), but also the electrodes and their interface with the active layer. In this context, the investigation of the transparent conductive electrode (TCE) plays an important role 25 , considering also its potential for applications in bioelectronics area 26 . Additionally, the fabrication of nanoscale periodic structures is a prerequisite for future applications in nanoelectronics 27 .…”

Section: Introductionmentioning

confidence: 99%

“…The progress regarding the optical properties of the nano-patterned electrodes offers an interesting opportunity for developing a new class of TCE which can operate in the visible and near-infrared regime 28 . For example, by the nano-patterning process, the morphology of electrode is changed and the light inside the organic photovoltaic device (OPV) is manipulated in order to improve the efficiency 25 . Other studies report that the nanostructured electrodes used in photovoltaics can reduce the transit time between them and the active layer, leading to a reduction of the charge carriers recombination 29 .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the geometrical parameters of the periodic structures (nano-patterns) of the TCE are important in light harvesting and charge carriers transport 35 . Although there are many paths to fabricate nanostructured electrodes, the UV-Nanoimprint Lithography (UV-NIL) is one of the large area, mass productions technique, in which the dimensions and the uniformity of the nano-patterns can be easy controlled 25 , 36 , 37 .…”

Section: Introductionmentioning

confidence: 99%

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Nucleobases thin films deposited on nanostructured transparent conductive electrodes for optoelectronic applications

Breazu

Socol

Preda

et al. 2021

Sci Rep

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Environmentally-friendly bio-organic materials have become the centre of recent developments in organic electronics, while a suitable interfacial modification is a prerequisite for future applications. In the context of researches on low cost and biodegradable resource for optoelectronics applications, the influence of a 2D nanostructured transparent conductive electrode on the morphological, structural, optical and electrical properties of nucleobases (adenine, guanine, cytosine, thymine and uracil) thin films obtained by thermal evaporation was analysed. The 2D array of nanostructures has been developed in a polymeric layer on glass substrate using a high throughput and low cost technique, UV-Nanoimprint Lithography. The indium tin oxide electrode was grown on both nanostructured and flat substrate and the properties of the heterostructures built on these two types of electrodes were analysed by comparison. We report that the organic-electrode interface modification by nano-patterning affects both the optical (transmission and emission) properties by multiple reflections on the walls of nanostructures and the electrical properties by the effect on the organic/electrode contact area and charge carrier pathway through electrodes. These results encourage the potential application of the nucleobases thin films deposited on nanostructured conductive electrode in green optoelectronic devices.

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Section: Resultsmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nucleobases thin films deposited on nanostructured transparent conductive electrodes for optoelectronic applications

Breazu

Socol

Preda

et al. 2021

Sci Rep

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ITO Top‐Electrodes via Industrial‐Scale PLD for Efficient Buffer‐Layer‐Free Semitransparent Perovskite Solar Cells

Zanoni

Paliwal

Hernández-Fenollosa

et al. 2022

Adv Materials Technologies

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well-established state-of-the-art devices such as silicon heterojunction solar cells and inorganic and organic light-emitting diodes (LEDs) to perovskite solar cells (PSCs), and organic solar cells. [5][6][7][8] There are also many examples of TCOs in new approaches that simultaneously require semitransparency and flexibility, such as semitransparent conductors, field-effect transistors, thermal shields, photo-detectors, and vertical transistors. [9][10][11][12][13][14] PSCs have attracted much interest since their onset in 2009 due to rapidly-increasing power conversion efficiencies (currently above 25% for small area cells). The perovskite layer and any adjacent charge transport layers can be fabricated in many ways using either solution-based processes or vacuum-assisted deposition. Vacuum-based deposition has the advantage of better control over the film thickness and is an additive method, moreover, it is a widely employed method of production of the before mentioned opto-electronic devices. [15,16] Despite the benefits and promising perspectives of using TCOs in optoelectronics, the development of organic/TCO (TCO on top of organic) bi-layer structures is still a non-trivial challenge because of the generally harsh processing conditions involved in the deposition of the TCO layers. [17] For both lab-and industrial-scale deposition of TCO, magnetron sputtering is the most widespread technique. It is a vacuumbased process that employs direct current or radio frequency to excite a carrier gas (most commonly Ar) into a high kinetic energy plasma which bombards a target material, resulting in the transfer of fragments from the target to substrates positioned above it. However, the accelerated particles, together with side phenomena such as plasma luminescence and processing-induced heat, can easily damage soft organic semiconductor layers, leading to increased leakage current, as well as reduced efficiency and a lower lifetime of the optoelectronic device. [18,19] To overcome this limitation, a protective buffer layer is deposited prior to the TCO deposition. [17] Also, many efforts were proposed to minimize damages of sputtering deposition on buffer-layer-free stacks by lowering the power density threshold by changes in power, target to substrate distance, sputtering gas, and process pressure, [20][21][22][23][24] but at the expense of longer processing times. [22,[25][26][27][28][29] Among these reports, the most efficient buffer-layer-free PSC using TCO top-electrode was achieved by Ramos et al. employing a post-annealed ITO sputtered directly onto a thick (290 nm) spiro-OMeTAD hole The deposition of transparent conductive oxides (TCO) usually employs harsh conditions that are frequently harmful to soft/organic underlayers. Herein, successful use of an industrial pulsed laser deposition (PLD) tool to directly deposit indium tin oxide (ITO) films on semitransparent vacuum-deposited perovskite solar cells without damage to the device stack is demonstrated. The morphological, electronic, and optical properties o...

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A review on the alternative of indium tin oxide coated glass substrate in flexible and bendable organic optoelectronic device

Shankar

Oberoi

Bandyopadhyay

2022

Polymers for Advanced Techs

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Flexible and optically transparent electrodes (TEs) are essential for most state-of-art organic optoelectronic devices (OOED). The demand for bendable electronic devices with aesthetic impact and multi-functionality has driven the rapid development of flexible TEs with improved optoelectrical and mechanical properties. However, conventional rigid TEs, that is, indium tin oxide (ITO) coated glass substrate (ITO/glass), cannot match smart devices' requirements in unique fields, like electrochromic devices, electronic skins, and wearable electronics, foldable displays, smart windows, and solar cells. To substitute extensively used ITO/glass electrodes has been endeavored because of the increasing price and inherently brittle ITO and glass substrate behavior. Emerging TEs based on the combination of the polymers substrate and conducting fillers like graphene, carbon nanotubes, metal nanowires, and transparent conducting oxides are bendable, lightweight, and inexpensive. They have shown substantial prospects to be used in the devices mentioned above. With each tiny development in these emerging TE's, such as outstanding optoelectrical and mechanical features in flexible electrodes, they become more suitable for practical applications in miscellaneous bendable devices. This review summarizes the comprehensive overview of the modern alternative flexible TEs and their implementation in bendable and stretchable devices.

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Pulsed Laser Deposition of Indium Tin Oxide Thin Films on Nanopatterned Glass Substrates

Cited by 37 publications

References 46 publications

Nucleobases thin films deposited on nanostructured transparent conductive electrodes for optoelectronic applications

Nucleobases thin films deposited on nanostructured transparent conductive electrodes for optoelectronic applications

ITO Top‐Electrodes via Industrial‐Scale PLD for Efficient Buffer‐Layer‐Free Semitransparent Perovskite Solar Cells

A review on the alternative of indium tin oxide coated glass substrate in flexible and bendable organic optoelectronic device

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