Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots
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Hobson, PR; Leslie, DE; Smith, DR
Published in: IEEE Nuclear Science Symposium Conference Record
January 1, 2011
The fluorescent quantum yield of core-shell (CdSe/ZnS) quantum dots (QDs) in hexane has recently been shown to decrease with increasing gamma irradiation dose. Here we report the effects on the fluorescent emission spectra of commercially produced CdSe/ZnS QDs of 2.5 nm, 3.3 nm and 6.3 nm size in toluene, following exposure to 1 MeV gamma irradiation in the range 0.1-110 Gy. We show that damage depends on the size of the QDs and that increasing the concentration of QDs in the toluene decreases the effect. Recovery of fluorescence quantum yield one day after irradiation has been seen, with full recovery noted for the 6.3 nm QDs. © 2011 IEEE.
Duke Scholars
Published In
IEEE Nuclear Science Symposium Conference Record
DOI
ISSN
1095-7863
Publication Date
January 1, 2011
Start / End Page
3015 / 3017
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Hobson, P. R., Leslie, D. E., & Smith, D. R. (2011). Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots. In IEEE Nuclear Science Symposium Conference Record (pp. 3015–3017). https://doi.org/10.1109/NSSMIC.2011.6152542
Hobson, P. R., D. E. Leslie, and D. R. Smith. “Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots.” In IEEE Nuclear Science Symposium Conference Record, 3015–17, 2011. https://doi.org/10.1109/NSSMIC.2011.6152542.
Hobson PR, Leslie DE, Smith DR. Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots. In: IEEE Nuclear Science Symposium Conference Record. 2011. p. 3015–7.
Hobson, P. R., et al. “Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots.” IEEE Nuclear Science Symposium Conference Record, 2011, pp. 3015–17. Scopus, doi:10.1109/NSSMIC.2011.6152542.
Hobson PR, Leslie DE, Smith DR. Effect of gamma radiation on potential ionising radiation detectors and dosimeters based on quantum dots. IEEE Nuclear Science Symposium Conference Record. 2011. p. 3015–3017.
Published In
IEEE Nuclear Science Symposium Conference Record
DOI
ISSN
1095-7863
Publication Date
January 1, 2011
Start / End Page
3015 / 3017