Laser sintering of oxidized copper nanoparticles deposited by dry aerosol printing

Sintering of oxidized copper nanoparticles arrays in the form of lines by the local treatment of laser radiation with wavelengths of 527 nm and 980 nm was studied. To form lines with a width equal to 40–150 μm and a thickness equal to 0.5–4 μm focused aerosol jets with average nanoparticle sizes of 110 and 65 nm were used. The production of semiconductor arrays from oxidized copper nanoparticles with a specific electrical resistance of 2⋅10−3 Ω⋅m using laser radiation with a wavelength of 980 nm was demonstrated.

Formation of planar plasmon microstructures by dry aerosol printing

Optical properties and microstructure of samples formed by dry aerosol printing are studied. Silver nanoparticles flat layers of two types were formed on substrates surfaces and were investigated by a spectrophotometer, a scanning electron microscope, and a transmission electron microscope. It is shown that all microstructures support plasmon resonance on individual nanoparticles with the Q factor depending both on the width of the nanoparticles size distribution in the aerosol and on their tendency to agglomeration and aggregation.

Toward All Aerosol Printing of High-Efficiency Organic Solar Cells Using Environmentally friendly Solvents in Ambient Air

With the surge of the power conversion efficiencies (PCEs) of organic solar cells (OSCs) in recent years, the commercialization of OSCs calls for scalable and environmentally friendly manufacturing techniques. Aerosol...

ИЗУЧЕНИЕ ЭФФЕКТИВНОСТИ ЛАЗЕРНОГО СПЕКАНИЯ СЕРЕБРЯНЫХ НАНОЧАСТИЦ, ОСАЖДАЕМЫХ СУХОЙ АЭРОЗОЛЬНОЙ ПЕЧАТЬЮ

Исследован процесс спекания локальным воздействием импульсного и непрерывного лазерного излучения с длинами волн 527, 1054 и 1064 нм массивов серебряных наночастиц со средним размером 60 нм, сформированных сухой аэрозольной печатью. Показано, что при использовании непрерывного лазерного излучения с длиной волны 1064 нм достигается минимальное удельное сопротивление линий в три раза выше, чем для объемного материала. This work is devoted to the sintering of silver nanoparticle (NP) arrays with an average size of individual NPs of about 60 nm formed by dry aerosol printing. The sintering process was carried out by the local treatment of pulsed and continuous laser radiation with wavelengths of 527, 1054 and 1064 nm. It has been shown that when using continuous laser radiation with the wavelength of 1064 nm, the minimum specific resistance of samples was achieved 3 times higher than that for the bulk material.

Comparison of Laser Sintering of Silver Nanoparticles in Form of Microdroplets of Nanoink and Dry Nanoparticles Obtained in a Gas Discharge

This article presents a comparison of laser sintering of deposited nanoparticles obtained by two methods of aerosol jet printing. The first printing method was based on the use of silver nanoparticles in the form of microdroplets contained in nanoink. In the second method, dry nanoparticles were obtained as a result of gas-discharge synthesis without the use of solvents. The nanoparticles in both experiments were deposited on a glass substrate in the form of a line with a width of about 50 ± 5 μm and a height of about 1.0 ± 0.2 μm. Then, the obtained lines were sintered using laser radiation with a wavelength of 1064 nm. As a result of experiments on the deposition and sintering, it was found that the electrical resistivity of the lines of sintered nanoparticles in the form of nanoink and dry nanoparticles obtained in a gas discharge was 8.1 and 4.9 μΩ·cm, respectively. Thus, it has been demonstrated that laser sintering of nanoparticles obtained in a gas discharge makes it possible to achieve a lower specific resistance of lines than the method of aerosol printing using nanoink. In addition, the electrical resistivity of the lines of sintered nanoparticles obtained in a gas discharge is 3 times greater than the electrical resistivity of bulk silver, which is a sufficient result for the creation of conductive elements of printed electronics.