| 具有表面光电特性的PbTiO_3纳米晶的尺寸效应 |
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| 引用本文： | 杨继华,洪元佳,白玉白,王妍妍,张昕彤,王德军,李铁津,余大书,翟剩勇.具有表面光电特性的PbTiO_3纳米晶的尺寸效应[J].吉林大学学报(理学版),1997(1). |
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| 作者姓名： | 杨继华 洪元佳 白玉白 王妍妍 张昕彤 王德军 李铁津 余大书 翟剩勇 |
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| 摘 要： | 利用溶胶-凝胶法制备不同粒径的PbTiO3纳米晶．表面光电压谱的研究结果表明，随粒径尺寸的减小，其表面光伏响应发生谱带加宽现象，并出现新的体相跃迁光伏响应结构．这些特性是小尺寸PbTiO3纳米晶内不同于体相PbTiO3的Ti4 的d轨道配位环境的体现．
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| 关 键 词： | PbTiO_3纳米晶 表面光伏响应 小尺寸表面效应 d轨道 |
Size Effect of PbTiO_3 Nanocrystals on the Surface Photovoltaic Properties |
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| Yang Jihua.Size Effect of PbTiO_3 Nanocrystals on the Surface Photovoltaic Properties[J].Journal of Jilin University: Sci Ed,1997(1). |
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| Authors: | Yang Jihua |
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| Abstract: | Different sized PbTiO3 nanocrystals were prepared by means of sol-gel method and studiedby surface photovoltaic spectroscopy.The experimental results show that the photovoltaic responseregion became wider, and new photovoltaic response occurred corresponding to bulk transition whenthe size of the nanocrystal decreased. The characteristic is attributed to Ti4 ion d orbit coordinate environment in the bulk PbTiO3 being different from that in PbTiO3 nanocrystal. |
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| Keywords: | PbTiO_3 nanocrystal surface photovoltaic response small-sized surface effect d orbit |
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