Effects of annealing under different atmospheres on structural and optical properties of USCVD grown ZnO nanostructures

Kutlu-Narin, E.; Narin, P.; Yıldız, Abdullah; Li̇şesi̇vdi̇n, S. B.

doi:10.1016/j.mseb.2020.114506

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…Decreased reverse current and improved rectification are observed for diodes of O 2 annealed nanorods [13]. Similarly, a substantial enhancement in optical and structural properties is seen after annealing in Ar and O 2 atmospheres [18]. Y.…”

Section: Introductionmentioning

confidence: 82%

Effect of Annealing Atmosphere on the Diode Behaviour of ZnO/Si Heterojunction

Faraz

Jafri

Tajvar

et al. 2021

ELEKTRON ELEKTROTECH

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The effect of thermal annealing atmosphere on the electrical characteristics of Zinc oxide (ZnO) nanorods/p-Silicon (Si) diodes is investigated. ZnO nanorods are grown by low-temperature aqueous solution growth method and annealed in Nitrogen and Oxygen atmosphere. As-grown and annealed nanorods are studied by scanning electron microscopy (SEM) and photoluminescence (PL) spectroscopy. Electrical characteristics of ZnO/Si heterojunction diodes are studied by current-voltage (I-V) and capacitance-voltage (C-V) measurements at room temperature. Improvements in rectifying behaviour, ideality factor, carrier concentration, and series resistance are observed after annealing. The ideality factor of 4.4 for as-grown improved to 3.8 and for Nitrogen and Oxygen annealed improved to 3.5 nanorods diodes. The series resistances decreased from 1.6 to 1.8 times after annealing. An overall improved behaviour is observed for oxygen annealed heterojunction diodes. The study suggests that by controlling the ZnO nanorods annealing temperatures and atmospheres the electronic and optoelectronic properties of ZnO devices can be improved.

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Section: Introductionmentioning

confidence: 82%

Effect of Annealing Atmosphere on the Diode Behaviour of ZnO/Si Heterojunction

Faraz

Jafri

Tajvar

et al. 2021

ELEKTRON ELEKTROTECH

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“…Thus, the preparation of metal oxide semiconductors with different sizes and morphology has gained significant attention due to their excellent chemical stability and thermal property [8][9][10][11]. Among different nanomaterials, ZnO nanoparticles (NPs) have been extensively employed in many industrial sectors such as electro-optical devices, gas sensors, photocatalysts, antimicrobial agents, antibiotics, and electrode materials [12][13][14][15]. ZnO can be obtained in different crystallized forms such as rock salt, zincblende, and wurtzite with the doping of ZnO nanoparticles with transition metals, like Ag, Sb, Cr, Mn, Fe, P, In, Co, Li, Al, Ga, As, Sn, Mg, etc., have been observed to perform fine control of morphology and size [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Structural and thermal properties of pure and chromium doped zinc oxide nanoparticles

et al. 2021

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Pure ZnO and Cr-doped ZnO nanoparticles have been synthesized via a facile chemical co-precipitation route and their structural, thermal characteristics were discussed systematically. In the experimental producer, the doping concentration has varied the range, 0.05–0.1 M, while calcined at 600 °C. The influence of Cr-doping on the physical characteristics of ZnO nanoparticles was investigated and addressed. As-prepared samples were analyzed via XRD, FTIR, TGA/DTA, BET, and ICP-MS. XRD analysis shows that ZnO and Cr doped ZnO nanoparticles with average particle sizes between 23 and 39 nm were successfully developed with hexagonal wurtzite structure. The FTIR spectroscopy analysis confirms the existence of chromium in the doped ZnO nanoparticles and the formation of ZnO. The TGA/DTA analysis shows that Cr–ZnO nanoparticles are more thermally stable than ZnO nanoparticles. Moreover, the dopant concentration has been analyzed via ICP-MS and showed a good agreement with the expected chromium concentration. The BET surface area measurement shows that 176.25 m2/g and 287.17 m2/g for un-doped ZnO, and 0.1 M Cr-doped ZnO nanoparticles, respectively. Hence, doping of Cr enhances the surface area and thermal stability. Thus, Cr–ZnO nanoparticles show good thermal stability, and high surface area, which is an excellent characteristices of nanomaterials. Graphic abstract

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