Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5368442 | Applied Surface Science | 2007 | 4 Pages |
Abstract
We have synthesized cone-like GeO2 structures via thermal heating of Ge powders. We have investigated the effects of substrate temperature on the sample morphology, revealing that cone-shaped structures are preferentially obtained at higher temperature. The cone-shaped structures, which gradually become thinner to form a sharp tip, appear to be a single-crystalline, hexagonal structure of GeO2. Room-temperature photoluminescence measurement revealed two emission peaks, at about 2.78 and 3.04Â eV.
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Authors
Hyoun Woo Kim, Seung Hyun Shim, Jong Woo Lee,