Nitrogen incorporated zinc oxide thin film for efficient ethanol detection

Shihabudeen, P. K.; Notash, Mina Yaghoobi; Sardroodi, Jaber Jahanbin; Chaudhuri, Ayan Roy

doi:10.1016/j.snb.2022.131544

Cited by 17 publications

(10 citation statements)

References 56 publications

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“…40 This competition influences the sensor performance and reduces its response under a highly humid atmosphere. In our previous study on N-ZnO thin films for ethanol sensing, 27 the DFT calculations have confirmed preferential adsorption of ethanol on surface N atoms compared to that on surface O atoms. Therefore, the influence of humidity decreases with nitrogen doping.…”

Section: Resultsmentioning

confidence: 66%

“…Electron accumulation at the interface gives rise to enhanced reaction sites for the adsorption of oxygen, which results in the improved sensitivity of the In 2 O 3 /ZnO nanocomposites. 12 It has been demonstrated that incorporation of nitrogen in the chosen n-type oxides increases their conductivity due to the enhanced concentration of V O s. 22,27 The band gaps of N-ZnO and N-In 2 O 3 thin films have been estimated as 3.12 eV and 2.79 eV (Fig. S7†), while the separation between the valence band edge and Fermi level has been estimated to be 2.2 eV and 2.18 respectively (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The carbon 1s peak (284.5 eV) has been used as a reference for calibration and a Tougaard background has been used for the peak background correction. 27 Fig. 4(a) and (b) display the Zn 3p and In 3d peaks of the composite thin films.…”

Section: Chemical Characterizationmentioning

confidence: 99%

“…22 Improvement of the receptor function of In 2 O 3 (N-In 2 O 3 ) and ZnO (N-ZnO) thin film based sensors because of nitrogen doping leads to their enhanced ethanol sensing performance in comparison with the undoped oxides. 22,27 Table S5 † compares the ethanol sensing response and operating temperature of N-In 2 O 3 , N-ZnO, IZO 50 and IZON 50 thin film sensors. Clearly the nitrogen doped nanocomposite thin films exhibit superior response compared to the individual oxide thin films.…”

Section: Sensing Mechanismmentioning

confidence: 99%

“…In our previous reports on nitrogen doped In 2 O 3 and ZnO thin films, improved ethanol sensing performance compared to their corresponding pristine oxides has been observed. 22,27 The N-In 2 O 3 thin film displayed a fast and stable response, whereas the N-ZnO thin film exhibited selective and low temperature sensing. In both cases changes in the band gap and an increase in the oxygen vacancy have been observed.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

Shihabudeen

Chaudhuri

2022

Nanoscale

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Section: Resultsmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 99%

Section: Chemical Characterizationmentioning

confidence: 99%

Section: Sensing Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

Shihabudeen

Chaudhuri

2022

Nanoscale

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High Sensitivity Humidity Sensors Based on Zn_1−xSn_xO Nanostructures and Plausible Sensing Mechanism

Wang

Zhang

et al. 2022

Physica Status Solidi (a)

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Humidity sensors have become a widespread and important integrated device for monitoring the environmental humidity in people's daily life to improve human comfort. They have already widely used for online real-time detection of automobile industry, medical field, construction, meteorology, and food processing. [1] Therefore, it is necessary to develop various humidity sensors with simple manufacturing, high sensitivity, and high-cost performance. Through domestic and overseas studies, it was found that metal oxides such as ZnO, SnO 2 , TiO 2 , In 2 O 3 , and WO 3 can meet the requirements of producing high-quality humidity sensors due to their small nanostructure size and large specific surface area. [2][3][4][5][6] Among the materials mentioned above, ZnO is a promising sensing material due to its wide energy bandgap (3.37 eV at room temperature) of n-type semiconductors, excellent chemical/physical stability, and unique electrical and optical properties. [7] Related studies have shown that 1D ZnO nanostructures have excellent sensing properties, such as high sensitivity, fast response/recovery, and have been used in humidity detection fields. [8][9][10][11][12][13][14] In order to meet the actual demand of production and life, the sensing characteristics of ZnO sensors need to be further improved. The chemical sensing ability of metal oxide materials can be enhanced by increasing the specific surface area and improving the surface state. Doping can effectively adjust the material characteristics such as specific surface area, surface state, and lattice structure strain, and it is considered as a valid method to modulate and enhance the performance of nanostructure humidity sensors. [15,16] Some groups have obtained remarkable sensing performance promotion through N, Co, and In doping in ZnO, respectively, as well as our previous works on the Ni-and K-doped ZnO sensors. [17][18][19][20][21] Sn (Sn 4þ , 0.69 Å) has similar ionic radii with Zn (Zn 2þ , 0.74 Å). Hence, the Zn 2þ can be easily substituted by Sn 4þ during the growth of materials. [22] With the doping process, the lattice structure of ZnO will be adjusted and more defects (e.g., oxygen vacancies) will be introduced, and the doped ions and defects can be directly or indirectly involved in the humidity-sensitive reaction, which enhances the humidity-sensitive properties.Among the methods for preparing materials, nonvacuum techniques or solution-based techniques such as hydrothermal, sol-gel, and spray pyrolysis have attracted a lot of attention from the scientific community due to their inexpensive nature. [23][24][25] In the above techniques, hydrothermal is the best choice for the preparation of nanowires because of its cost-effective and easy synthesis. [26] Precise positioning of nanostructures between electrodes is also necessary in the construction of sensors. Dielectrophoresis (DEP) has been widely used in many fields of research since its invention, such as biological cell separation, inorganic particle separation, material detection, manipulat...

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In-doped ZnO films deposited by modified SILAR method for enhanced ethanol gas sensor application

Kathwate

2024

Ceramics International

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Nitrogen incorporated zinc oxide thin film for efficient ethanol detection

Cited by 17 publications

References 56 publications

Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

High Sensitivity Humidity Sensors Based on Zn_1−xSn_xO Nanostructures and Plausible Sensing Mechanism

In-doped ZnO films deposited by modified SILAR method for enhanced ethanol gas sensor application

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Nitrogen incorporated zinc oxide thin film for efficient ethanol detection

Cited by 17 publications

References 56 publications

Nitrogen doped In2O3–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

Nitrogen doped In2O3–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

High Sensitivity Humidity Sensors Based on Zn1−xSnxO Nanostructures and Plausible Sensing Mechanism

In-doped ZnO films deposited by modified SILAR method for enhanced ethanol gas sensor application

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Product

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Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

Nitrogen doped In₂O₃–ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors

High Sensitivity Humidity Sensors Based on Zn_1−xSn_xO Nanostructures and Plausible Sensing Mechanism