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It is noteworthy that in comparison with pure Au NCs,the characteristic gold plasmon peak of the Au ZnO hybrid NPs is apparently red-shifted and broadened; this results from the size and structure of Au ZnO hybrid NPs and the interface communication between Au and the metal oxide. The absorption peak around ¦Ë = 361 nm for the Au ZnO hybrid NPs is assigned to the ground excitonic state of pure ZnO. |
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