TY - JOUR
T1 - Tuning the optical and electrical properties by gamma irradiation of silver nanoparticles decorated graphene oxide on glutaraldehyde crosslinked polyvinyl alcohol matrix
AU - Kavitha, C. M.
AU - Eshwarappa, K. M.
AU - Shilpa, M. P.
AU - Shetty, Shivakumar Jagadish
AU - Surabhi, Srivathsava
AU - Shashidhar, A. P.
AU - Karunakara, N.
AU - Gurumurthy, S. C.
AU - Sanjeev, Ganesh
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/5
Y1 - 2024/5
N2 - In this study, we propose a facile in-situ approach to fabricate a silver (Ag) NPs decorated graphene oxide (GO) blended with glutaraldehyde (GA) crosslinked polyvinyl alcohol (PVA) matrix, resulting in a PVA/GO-Ag/GA nanocomposite. We investigated how gamma radiation affected the optical and electrical properties of the resulting nanocomposites. Our study reveals that exposure to gamma radiation decreases the band gap of PVA/GO-Ag/GA from 6.06 to 3.35 eV for a 2 kGy dose. The direct current (dc) electrical conductivity was measured to be 2.30 × 10−5 S cm−1 for a 2 kGy dose. Additionally, Jonscher's power law analysis of the alternating current (ac) conductivity behavior suggests that the conduction mechanism in the samples is most likely due to charge carrier transport after gamma irradiation. In conclusion, our findings demonstrate that irradiating PVA/GO-Ag/GA nanocomposites with gamma wavelengths yields tunable electrical and optical properties, making them potential candidates for optoelectronic and electromagnetic applications.
AB - In this study, we propose a facile in-situ approach to fabricate a silver (Ag) NPs decorated graphene oxide (GO) blended with glutaraldehyde (GA) crosslinked polyvinyl alcohol (PVA) matrix, resulting in a PVA/GO-Ag/GA nanocomposite. We investigated how gamma radiation affected the optical and electrical properties of the resulting nanocomposites. Our study reveals that exposure to gamma radiation decreases the band gap of PVA/GO-Ag/GA from 6.06 to 3.35 eV for a 2 kGy dose. The direct current (dc) electrical conductivity was measured to be 2.30 × 10−5 S cm−1 for a 2 kGy dose. Additionally, Jonscher's power law analysis of the alternating current (ac) conductivity behavior suggests that the conduction mechanism in the samples is most likely due to charge carrier transport after gamma irradiation. In conclusion, our findings demonstrate that irradiating PVA/GO-Ag/GA nanocomposites with gamma wavelengths yields tunable electrical and optical properties, making them potential candidates for optoelectronic and electromagnetic applications.
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U2 - 10.1016/j.materresbull.2024.112685
DO - 10.1016/j.materresbull.2024.112685
M3 - Article
AN - SCOPUS:85183186056
SN - 0025-5408
VL - 173
JO - Materials Research Bulletin
JF - Materials Research Bulletin
M1 - 112685
ER -