| Pinning Theory of Fermi Energy and Surface State Measurement of ZnSnO3 Gas Sensitive Material |
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| 作者姓名： | LI Ji LIU Tian-mo ZHAO Xian-rui WANG Zhong-chang LI Jia-ming |
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| 作者单位： | 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China; 2. National Functional Materials Engineering Technology Study Center, Chongqing 400700,China |
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| 摘 要： | In order to research the state of energy bands and gain and loss of electrons on the surface of ZnSnO_(3),it is put forward that Pinning theory of Fermi energy is applied to development of gas sensitive materials.The relative position between surface state and conduction band on surface of zinc tin complex oxide(ZnSnO_(3)) gas sensitive material has been investigated by utilizing oxidation redox couple,FeCl_(2)/ FeCl_(3),which have high surface state.Fermi energy is pinned at about 0.2 eV below conduction band E_(cs)on the surface of ZnSnO_(3).It has been determined that additives doping ratio,addition concentration and working atmosphere have no effect on this value.Therefore,pinning theory of Fermi energy has been verified by using this method.
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| 关 键 词： | Fermi energy pinning theory Fe~(2+)/Fe~(3+)oxidation redox couple ZnSnO_(3) |
| 收稿时间： | 1/8/2006 12:00:00 AM |
| 修稿时间： | 1/8/2006 12:00:00 AM |
Pinning Theory of Fermi Energy and Surface State Measurement of ZnSnO3 Gas Sensitive Material |
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| LI Ji,LIU Tian-mo,ZHAO Xian-rui,WANG Zhong-chang,LI Jia-ming.Pinning Theory of Fermi Energy and Surface State Measurement of ZnSnO3 Gas Sensitive Material[J].Storage & Process,2006(5):55-58. |
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| Authors: | LI Ji LIU Tian-mo ZHAO Xian-rui WANG Zhong-chang LI Jia-ming |
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| Institution: | 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China; 2. National Functional Materials Engineering Technology Study Center, Chongqing 400700,China |
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| Abstract: | In order to research the state of energy bands and gain and loss of electrons on the surface of ZnSnO_(3),it is put forward that Pinning theory of Fermi energy is applied to development of gas sensitive materials.The relative position between surface state and conduction band on surface of zinc tin complex oxide(ZnSnO_(3)) gas sensitive material has been investigated by utilizing oxidation redox couple,FeCl_(2)/ FeCl_(3),which have high surface state.Fermi energy is pinned at about 0.2 eV below conduction band E_(cs)on the surface of ZnSnO_(3).It has been determined that additives doping ratio,addition concentration and working atmosphere have no effect on this value.Therefore,pinning theory of Fermi energy has been verified by using this method. |
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| Keywords: | Fermi energy pinning theory Fe~(2+)/Fe~(3+)oxidation redox couple ZnSnO_(3) |
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