Comparative analysis of opto-electronic performance of aluminium and silver nano-porous and nano-wired layers

Marus, Mikita; Hubarevich, Aliaksandr; Wang, Hong; Stsiapanau, A.; Smirnov, A.; Sun, Xiao Wei; Fan, Wenhui

doi:10.1364/oe.23.026794

Cited by 12 publications

(11 citation statements)

References 33 publications

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“…where ϕ frac is the surface fraction of metal plated polymer surface; ϕ crit is the percolation theshold when the conductivity is tending to zero; σ m and σ p are the conductivities of the metal and polymer constitutuents respectively; t , s and q are the exponental factors that depend on the dimesnioanlity of the system. The percolation model used to describe optical and electronic properties of nano-porous layers 39 40 41 then can be generalized for all range of area fraction ϕ frac values: below, above and at the percolation threshold. Therefore, the sheet resistance R s is a function of ϕ frac :…”

Section: Resultsmentioning

confidence: 99%

Colour-Difference Measurement Method for Evaluation of Quality of Electrolessly Deposited Copper on Polymer after Laser-Induced Selective Activation

Gedvilas

Ratautas

Kacar

et al. 2016

Sci Rep

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In this work a novel colour-difference measurement method for the quality evaluation of copper deposited on a polymer is proposed. Laser-induced selective activation (LISA) was performed onto the surface of the polycarbonate/acrylonitrile butadiene styrene (PC/ABS) polymer by using nanosecond laser irradiation. The laser activated PC/ABS polymer was copper plated by using the electroless copper plating (ECP) procedure. The sheet resistance measured by using a four-point probe technique was found to decrease by the power law with the colour-difference of the sample images after LISA and ECP procedures. The percolation theory of the electrical conductivity of the insulator conductor mixture has been adopted in order to explain the experimental results. The new proposed method was used to determine an optimal set of the laser processing parameters for best plating conditions.Polymer-based electrical devices are used in different areas such as optical communications, biomedicine, and automotive industry 1,2 . Formation of the electrical circuits on polymers is important for these devices. There are many techniques called "selective metallization" to produce a circuit on the surface of polymers: direct chemical plating 3 , laser direct structuring (ablation and writing) 4,5 , laser direct imaging 6 and laser-induced selective activation (LISA) [7][8][9][10][11] .LISA was developed for selective metallization of polymers for three-dimensional moulded interconnecting devices. This method contains single step: laser structuring of the polymer surface. As a result of the laser structuring, sponge-like and nano-porous structures are created to improve the adhesion strength of the metal to the polymer. After LISA process the metal layer is deposited by the electroless copper plating (ECP) procedure. The ECP contains of three-steps: activation of the laser-structured surface with palladium colloidal activator; cleaning with distilled water; electroless deposition of copper layer on the activated sample. In the activation procedure, palladium atoms are trapped in a porous sponge like structures on the polymer surface. Cleaning with distilled water removes unwanted palladium from flat unstructured polymer and leaves it confined in the poriferous surface. The copper fills all the openings in the polymer and a porous, rough metal film is deposited during the final step of the ECP. Finally, after both, LISA and ECP procedures, the copper layer is deposited selectively only onto the laser structured areas while unstructured polymer is not coated with the metal deposition.The electrical and optical properties of the semi-transparent films were investigated in numerous works [12][13][14][15][16][17][18][19] . However, the analysis of the sheet resistance dependence on the optical transmittance can be applied only for films with the thicknesses smaller than the absorption depth. Such kind of measurements cannot be realized with a relatively thick metal layer on the porous opaque substrate.The characterization of the cross section of...

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Section: Resultsmentioning

confidence: 99%

Colour-Difference Measurement Method for Evaluation of Quality of Electrolessly Deposited Copper on Polymer after Laser-Induced Selective Activation

Gedvilas

Ratautas

Kacar

et al. 2016

Sci Rep

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“…The majority of results describing properties of random nanowire networks have been experimental or via direct computational simulation. Various studies have experimentally compared electrical properties of films using different conductive rods, such as silver nanowires and carbon nanotubes [4,5,8]. Agreement between simulation and experimental observations of electrical properties has also been well established for the classes of random nanowire networks that are easiest to produce experimentally [9].…”

Section: Introductionmentioning

confidence: 97%

Analytical modeling of orientation effects in random nanowire networks

Jagota

Scheinfeld

2020

Phys. Rev. E

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Films made from random nanowire arrays are an attractive choice for electronics requiring flexible transparent conductive films. However, thus far there has been no unified theory for predicting their electrical conductivity. In particular, the effects of orientation distribution on network conductivity remain poorly understood. We present a simplified analytical model for random nanowire network electrical conductivity that is the first to accurately capture the effects of arbitrary nanowire orientation distributions on conductivity. Our model is an upper bound and converges to the true conductivity as nanowire density grows. The model replaces Monte Carlo sampling with an asymptotically faster computation and in practice can be computed much more quickly than standard computational models. The success of our approximation provides novel theoretical insight into how nanowire orientation affects electrical conductivity, illuminating directions for future research.

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“…where on is the conductivity of metal, <his the volume fraction of patterned metal layer, t/lcrir is the volume fraction threshold when the conductivity of patterned metal layer is zero, his the thickness of the metal layer and tis the critical exponent. Above mentioned methods were successfully applied by our group in several research articles [113][114][115][116][117][118].…”

Section: Methodology For Comparing Np and Nw Tclsmentioning

confidence: 99%

“…We assumed ideal crossings of NWs for both uniform and random layers. Above mentioned models were successfully applied by our group in [113][114][115][116][117][118].…”

Section: Methodology For Comparing Random and Ordered Nw Tclsmentioning

confidence: 99%

“…A uniform broadband transmittance is observed for wavelengths longer than 400 nm, while decrement due to the localized surface plasmon resonance is in range of 325-400 nm. We have successfully implemented the abovementioned model in series of publications [113][114][115][116][117]. The values of NW radius rand SC were 50 run and 35%, respectively.…”

Section: Vue )Tmentioning

confidence: 99%

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Novel metallic transparent conductive layers for optoelectronics

Marus¹

Self Cite

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for their constant support, guidance and understanding throughout my research work. Thanks to Prof Aliaksandr Smirnov for his suggestions and help before and during my PhD track. I am grateful to Jeremy for his help and time contributed to our project. It has been my pleasure to work with you all and I hope to continue our collaboration in future. I want to thank Dr Aliaksandr Hubarevich for all his help, support, and for being my friend no matter what problems we faced during our time here. I am looking forward to stay in touch and continue to work together on future projects. Thanks to Julia Gusakova for our teatimes, funny and serious talks; you and Aliaks helped me to stay animated and in good mood. I am very grateful to Nanyang Technological University for being my home for the last four years, a place to develop my personality and skills. Special. thanks to the staff of Graduate Programme Office and especially to Christina for your care, you have always had time to listen to my (many) questions and carefully explain. Many thanks to A *STAR for making it all possible. Hard to express how grateful I am to my wife, Arina, for all her help, care, support and love. I know how hard it was for you. Thanks to my parents and my brother for staying in touch and supporting me. I dedicate this thesis to my family, my wife and our son Leon.

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Comparative analysis of opto-electronic performance of aluminium and silver nano-porous and nano-wired layers

Cited by 12 publications

References 33 publications

Colour-Difference Measurement Method for Evaluation of Quality of Electrolessly Deposited Copper on Polymer after Laser-Induced Selective Activation

Colour-Difference Measurement Method for Evaluation of Quality of Electrolessly Deposited Copper on Polymer after Laser-Induced Selective Activation

Analytical modeling of orientation effects in random nanowire networks

Novel metallic transparent conductive layers for optoelectronics

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