| Ultraviolet and Deep-Ultraviolet Emissions from c-MgxZn1-xO/MgO Ultrathin Multilayer Heterostructures |
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| 作者姓名： | 余萍 邱东江 吴惠桢 |
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| 作者单位： | [1]Department of Physics, Zhejiang University, Hangzhou 310027 [2]State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 50472058. |
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| 摘 要： | Cubic phase MgxZn1-x O/MgO multilayer heterostructures （c-Mgx Zn1-xO/MgO MHs） are grown on Si（100） and quartz substrates by reactive electron beam evaporation at low temperature （250℃）. Cross-sectional morphology observations by field-emission scanning electron microscopy show the legible interfaces of c-MgxZn1-x O/MgO MHs. X-ray diffraction demonstrates that c-MgxZn1-xO/MgO MHs are of highly （100）-oriented. Optical trans- mission investigations of c-Mgx Zn1-x O/MgO MHs on quartz substrates reveal the coexistence of the two phases, c-MgxZn1-xO and MgO. Photoluminescence examination indicates the emergence of deep-ultraviolet emission centred at about 290nm along with the blue shift of the ultraviolet emission from 405nm to 39Gnm when the nominal thickness of c-MgxZn1-xO well layers of MHs is diminished to 3nm, which is probably originated from quantum confinement effect.
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| 关 键 词： | c-MgxZn1-xO MgO 紫外线 超薄多层异质结构 电子束 光致发光 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005-04-30 |
Ultraviolet and Deep-Ultraviolet Emissions from c-MgxZn1-xO/MgO Ultrathin Multilayer Heterostructures |
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| Yu Ping;Qiu DongJiang;Wu HuiZhe.Ultraviolet and Deep-Ultraviolet Emissions from c-MgxZn1-xO/MgO Ultrathin Multilayer Heterostructures[J].Chinese Physics Letters,2005,22(10):2688-2691. |
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| Authors: | Yu Ping;Qiu DongJiang;Wu HuiZhe |
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