Preparation of nanocrystalline nickel oxide thin films by sol–gel process for hydrogen sensor applications

Structural characterization of nickel oxide/hydroxide nanosheets produced by CBD technique

“…NiO has been extensively studied material as being an optically active material in electrochromic devices, gas sensors, magnetic materials, and fuel cell electrodes [5][6][7]. The physical and chemical properties of nickel oxide/hydroxide nanostructures strongly depend on their size and shape.…”

“…The synthesis of nanoporous nanosheets of NiO is in the focus to improve the specific surface area and enhance the corresponding performance [8]. Nickel oxide/hydroxide films have been prepared on a variety of substrates by different methods such as RF sputtering [9], electron beam evaporation [10], spray pyrolysis [11], chemical bath deposition (CBD) [12], sol-gel technique [6] and dipping deposition [13]. Among them, the CBD technique is an advantageous technique due to its low cost and its convenience for large-area deposition.…”

Effect of plasma oxidation parameters on physical properties of nanocrystalline nickel oxide thin films grown by two-step method: DC sputtering and plasma oxidation

“…In recent years, the preparation and characterization of nanostructure nickel oxide (NiO) have gained considerable attentions of many scientists, due to excellent properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The properties of NiO thin films, which make it suitable for the different applications, are excellent durability, low material cost and wide optical band gap in the range of 3.6 -4 eV, excellent electrical and optical properties .…”

“…The properties of NiO thin films, which make it suitable for the different applications, are excellent durability, low material cost and wide optical band gap in the range of 3.6 -4 eV, excellent electrical and optical properties . Some applications of NiO thin films include gas sensors [1][2][3][4][5], positive electrode in Li-ion batteries [9], electrochromic display devices [12] and metal-isolator-metal tunnel junction diode [11]. NiO films can be fabricated by different physical and chemical deposition techniques such as DC and RF magnetron sputtering [2,6,[11][12][13][14][15], thermal oxidation [16][17][18], chemical deposition [19,20], pulsed laser deposition [9], spray pyrolysis [21] and sol-gel [23].…”

A ppb-Level Formaldehyde Gas Sensor Based on Rose-Like Nickel Oxide Nanoparticles Prepared Using Electrodeposition Process

“…6 In particular, the¯eld of gassensing can bene¯t from relatively low cost and excellent chemical stability of the NiO nanostructured functional layer. 7,8 A variety of methods have been used to prepare the NiO nanomaterial, such as sputtering, 9 chemical vapor deposition, 10 sol-gel method, 11 hydrothermal growth 12 and electrodeposition process. 13 Electrodeposition is one of the most popular methods due to low cost and feasibility of room temperature growth in large areas.…”