2022
DOI: 10.1088/2053-1591/aca240
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Effect of 4He2+ ion irradiation on the optical, electrical, morphological, and structural properties of ZnO thin films

Abstract: A study of the effect of 2.5 MeV 4He2+ ion irradiation on the optical, electrical, morphological and structural properties of ZnO thin films is presented. Polycrystalline zinc oxide thin films were deposited on soda lime glass substrates using the spray pyrolysis technique. During the process, the substrates’ surfaces were kept at 400, 450 and 500°C. The samples were analyzed by different techniques and the optical results showed a red shift in the energy band gap after irradiation. It was also confirmed that … Show more

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Cited by 4 publications
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“…The band gap, however, showed a sudden decrease to 3 eV in the high fluence regime beyond 3 × 10 12 ions cm −2 . The observed band gap narrowing of the irradiated TiO 2 nanoparticles in the high fluence regime may arise because of two different reasons: (i) grain growth leading to larger size particles 35 and (ii) formation of defect induced high‐density of band‐tail states in the band gap of the material 36 . Crystallite size calculated from our XRD study in the pristine and irradiated samples rules out grain growth as a reason for the observed band gap narrowing.…”
Section: Resultsmentioning
confidence: 81%
“…The band gap, however, showed a sudden decrease to 3 eV in the high fluence regime beyond 3 × 10 12 ions cm −2 . The observed band gap narrowing of the irradiated TiO 2 nanoparticles in the high fluence regime may arise because of two different reasons: (i) grain growth leading to larger size particles 35 and (ii) formation of defect induced high‐density of band‐tail states in the band gap of the material 36 . Crystallite size calculated from our XRD study in the pristine and irradiated samples rules out grain growth as a reason for the observed band gap narrowing.…”
Section: Resultsmentioning
confidence: 81%