Rapid degradation of CdSe/ZnS colloidal quantum dots exposed to gamma irradiation

Journal Article · Mon Oct 27 04:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2978073· OSTI ID:21175695

Withers, Nathan J; Sankar, Krishnaprasad; Akins, Brian A; Memon, Tosifa A; Tingyi, Gu; Jiangjiang, Gu; Smolyakov, Gennady A; Greenberg, Melisa R; Osinski, Marek ^[1]; Boyle, Timothy J ^[2]

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1. Center for High Technology Materials, University of New Mexico, 1313 Goddard SE, Albuquerque, New Mexico 87106-4343 (United States)
2. Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Blvd. SE, Albuquerque, New Mexico 87106 (United States)

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

• OSTI ID: 21175695
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 17 Vol. 93; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM SELENIDES
CESIUM 137
COLLOIDS
GAMMA RADIATION
HARDNESS
KEV RANGE 100-1000
PHOTOLUMINESCENCE
PHOTONS
QUANTUM DOTS
RADIATION DOSES
SEMICONDUCTOR MATERIALS
ZINC SULFIDES