Inkjet-printed gas sensors: metal decorated WO3 nanoparticles and their gas sensing properties

Abstract

Inkjet deposition is an attractive technology to localize nanomaterials in an area-selective manner on virtually any kind of surfaces. Great advantages of the method are effective usage of materials, low processing temperatures and few required manufacturing steps, thus enabling rapid prototyping and bulk production with reasonably low cost. A number of different electrical devices such as light emitting diodes, transistors and solar cells have already been demonstrated, reflecting the versatility of inkjet printing. In this paper, we collect the contemporary results on inkjet deposited gas sensors and show examples of such gas sensing devices based on surface modified WO 3 nanoparticles for efficient discrimination of various gaseous analytes from sub-ppm up to nearly 0.1% concentration levels in air.

Preparation of inkjet-printed titanium monoxide as p-type absorber layer for photovoltaic purposes

“…Triton X-100 and polyethylene glycol (PEG) 1500 were added to reduce surface tension of a colloidal solution [32] and hinder cracks that appear during the thermal treatment of layers [33,34], respectively. Subsequently, the solution was well dispersed by agitating it in an ultrasonic bath for 1 h [35]. Following that, Foamstop 600N was added to reduce bubbles, and then, the prepared TiO ink was inserted into the printer cartridge.…”

Flexible Nonstick Replica Mold for Transfer Printing of Ag Ink

“…4 5 Printing technologies are thus envisaged to pave the way for frontier flexible electronics, such as flexible displays, sensors, and radio frequency identification cards. [6][7][8] Among various printing methods, the basic concepts of nano-imprint lithography and transfer printing are widely adapted to the transfer of all the components, i.e., metal electrodes, insulators, and semiconductors, needed to fabricate thin-film transistors (TFTs) on a plastic substrate. For examples, Menard et al reported bendable TFTs fabricated by transferring free standing micro-structured * Authors to whom correspondence should be addressed.…”

“…As mold precursors, acrylic mixtures were prepared from silsesquioxane-based materials, silicone acrylate, poly(propylene glycol) diacrylate, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl methacrylate, and photoinitiator. By using these materials, the replica molds were fabricated from a silicon master onto a flexible substrate by means of UV-assisted molding process at room temperature.…”

An ultraselective and ultrasensitive TEA sensor based on α-MoO3 hierarchical nanostructures and the sensing mechanism

“…1 Many semiconducting metal oxides such as SnO 2 , WO 3 , Fe 2 O 3 , ZnO and In 2 O 3 , have been extensively investigated, they showed 30 excellent sensitivity and response speed. [2][3][4][5][6] But the defect of poor selectivity limits their practical application under complex surrounding conditions. As one of the most significant functional materials, MoO 3 is an environmentally friendly n-type semiconductor material (E g = 3.1 35 eV), which has attracted considerable attention in the field of photocatalysts, 7,8 gas sensors, 9,10 electrochemistry, 11,12 field emission, 13 gaschromic 14 and photochromic devices 15 due to its special quantum size effect, surface effect and high reactivity characteristics.…”