Rapid degradation of Cd Se ∕ Zn S colloidal quantum dots exposedto gamma irradiation

• Published in: Applied physics letters Vol. 93; no. 17; pp. 173101 - 173101-3
• Main Authors: Withers, Nathan J., Sankar, Krishnaprasad, Akins, Brian A., Memon, Tosifa A., Gu, Tingyi, Gu, Jiangjiang, Smolyakov, Gennady A., Greenberg, Melisa R., Boyle, Timothy J., Osiński, Marek
• Format: Journal Article
• Published: American Institute of Physics 28-10-2008
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.2978073

Effects of
Cs
137
gamma irradiation on photoluminescent properties of
Cd
Se
∕
Zn
S
colloidal quantum dots are reported. Optical degradation is evaluated by tracking the dependence of photoluminescence intensity on irradiation dose.
Cd
Se
∕
Zn
S
quantum dots show poor radiation hardness, and severely degrade after less than
20
kR
exposure to
662
keV
gamma photons.