2020
DOI: 10.1007/s00339-020-03780-3
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Thermally influenced, optical and fluorescence properties of Zinc Oxide nanoparticles for glutathione sensing

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Cited by 10 publications
(5 citation statements)
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“…The room-temperature photoluminescence spectra in Figure d show that when ZnO nanoparticles were excited at 360 nm, a shoulder peak in the UV region, a sharp emission peak in the violet region, and a less intense broad peak were observed in the green region. The emission peak in the UV region is attributed to the near-band edge emission owing to free exciton recombination via an exciton–exciton collision process . Emission in the visible region is attributed to defects, such as antisites, interstitial, and vacancies present in ZnO nanostructures. , The emission in the violet region is attributed to the transition of an electron from the conduction band edge to the zinc vacancy (V Zn ) .…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The room-temperature photoluminescence spectra in Figure d show that when ZnO nanoparticles were excited at 360 nm, a shoulder peak in the UV region, a sharp emission peak in the violet region, and a less intense broad peak were observed in the green region. The emission peak in the UV region is attributed to the near-band edge emission owing to free exciton recombination via an exciton–exciton collision process . Emission in the visible region is attributed to defects, such as antisites, interstitial, and vacancies present in ZnO nanostructures. , The emission in the violet region is attributed to the transition of an electron from the conduction band edge to the zinc vacancy (V Zn ) .…”
Section: Resultsmentioning
confidence: 99%
“…The emission peak in the UV region is attributed to the near-band edge emission owing to free exciton recombination via an exciton−exciton collision process. 36 Emission in the visible region is attributed to defects, such as antisites, interstitial, and vacancies present in ZnO nanostructures. 37,38 The emission in the violet region is attributed to the transition of an electron from the conduction band edge to the zinc vacancy (V Zn ).…”
Section: Steady-state Fluorescence Studiesmentioning
confidence: 99%
“…Such electronic features facilitate excitonic stimulated emission and give origin to a large variety of optical properties, including a nearband-edge emission in the UV region (3.3777 eV / 367 nm) ascribed to free exciton recombination and other broad violet, green, and yellow emission bands [74], which have been ascribed to the interplay of various intrinsic defects, such as zinc and oxygen interstitials (Zni, Oi), oxygen vacancies (Vo), zinc vacancies (VZn), and antisites (OZn) [75]. The positions and intensities of the latter visible emission bands are largely dependent on the size of the nanoparticles/nanocrystals [76], which are obtained following various synthesis routes [77,78], owing to different quantum confinement effects; this issue can be profitably exploited to tune the emission with the aim of producing optical devices of technological interest. Regarding the synthesized solids, that are all white under the solar light, when they are observed with the naked eye while irradiated with a 365 nm UV lamp, an intense yellow luminescence is observed for ZND1, a less intense yellow flare comes from ZAD1, while ZCD1 shows a feeble bluish-white emission (Fig.…”
Section: Photoluminescence Spectramentioning
confidence: 99%
“…The green and orange emission in ZnO is ascribed to the recombination of the photogenerated hole with singly ionized oxygen vacancy. Whereas blue emission is ascribed to the presence of singly ionized V Zn and Zn i defects [138]. The defects in ZnO are greatly affected by the local environment and easily vanished on interaction with water molecules, hydroxide formations, and conversion to zinc carbonate/ phosphate species [43,139,140].…”
Section: Bioimagingmentioning
confidence: 99%