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Resonant electronic energy transfer from excitons confined in silicon nanocrystals to oxygen molecules


, : Resonant electronic energy transfer from excitons confined in silicon nanocrystals to oxygen molecules. Physical Review Letters 89(13): 137401-137401

We demonstrate efficient resonant energy transfer from excitons confined in silicon nanocrystals to molecular oxygen (MO). Quenching of photoluminescence (PL) of silicon nanocrystals by MO physisorbed on their surface is found to be most efficient when the energy of excitons coincides with triplet-singlet splitting energy of oxygen molecules. The dependence of PL quenching efficiency on nanocrystal surface termination is consistent with short-range resonant electron exchange mechanism of energy transfer. A highly developed surface of silicon nanocrystal assemblies and a long radiative lifetime of excitons are favorable for achieving a high efficiency of this process.

US$19.90

PMID: 12225061

DOI: 10.1103/PhysRevLett.89.137401


Other references

Weiser, M.; Baker, H.; Wessel, T.; Joh, T.H., 1992: Longterm alterations in neurotransmitter biosynthetic enzymes in response to neuronal injury. Society for Neuroscience Abstracts 18(1-2): 772

Opuda Asibo, J.; Maheswaran, S.K., 1985: Expression of Pasteurella haemolytica-specific lung antibodies in conventionally raised versus Pasteurella-free calves. Three Pasteurella haemolytica vaccine preparations were inoculated intradermally into conventionally raised as well as Pasteurella-free calves. Whereas the vaccines generated an agglutinating antibody response in the sera of both types of calf (pa...

Gotlieb, A.; Pesach, I., 1962: Urinary potassium in icterus neonatorum and other hemolytic processes. Harefuah 63: 174-177

Mein, E.; Alaani, A.; Jones, R.Vaughn., 2007: Consent for mastoidectomy: a patient's perspective. The purpose of this study is to identify the difference between patients perspectives regarding the given information during the consenting procedure of mastoidectomy and the type of the provided information by the medical practitioners. This subj...

Khan, M.S.; Siddiqui, S.Z.; Haider, S.; Zafar, A.; Zafar, F.; Khan, R.N.; Afshan, K.; Jabeen, A.; Khan, M.S.; Hasan, R., 2010: Infection control education: impact on ventilator-associated pneumonia rates in a public sector intensive care unit in Pakistan. We describe efforts towards introducing infection control (IC) practices and establishment of antimicrobial resistance (AMR) surveillance in a public sector hospital in Pakistan. The study was conducted in an eight-bed intensive care unit. IC prin...

Tewary, P.; Veena, K.; Pucadyil, T.J.; Chattopadhyay, A.; Madhubala, R., 2005: The sterol-binding antibiotic nystatin inhibits entry of non-opsonized Leishmania donovani into macrophages. Leishmania donovani is an obligate intracellular parasite that infects macrophages of the vertebrate host resulting in visceral leishmaniasis in humans, a major public health problem worldwide. The molecular mechanisms involved in internalization...

Anonymous, 1988: The positions of patients in bed. Soins; la Revue de Reference Infirmiere: Iii-Iiv

Ben-Shaked, Y.; Harpaz, I., 1966: Protection of a susceptible insect host against a nuclear-polyliedrosis virus fey ether extracts from insert larvae. In Israel, laboratory experiments indicated that the endocrine mechanism regulating growth and development is involved in the activation of latent nuclear polyhedrosis viras in Spodoptera littoralis (Boisd.) (Prodenia litura, auct). The effect of...

Georgiev T.; Anghelova L., 1972: Yield fitness for mechanized harvest and amino acid composition of the main maize hybrids grown in bulgaria. Rasteniev"dni Nauki 9(5): 25-32

Luzi, F.; Crimella, C., 1990: The rabbit breeding situation in Spain. In 1985, 62.25 million rabbits for slaughter were produced in Spain, representing 3% of the country's total meat production. From 1976 to 1985, production increased by a factor of 2.29. Catalonia accounts for almost half of the rabbits slaugh...