Spectroscopic investigation of the electronic structure of thin atomic layer deposition HfO2 films
Spectroscopic investigation of the electronic structure of thin atomic layer deposition HfO2 films
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原子层沉积 HfO2 薄膜电子结构的光谱研究
DOI:
10.1116/1.4935338
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
D. Schmeisser
中科院分区:
文献类型:
--
作者:
S. Alberton Corrêa;S. Brizzi;D. Schmeisser
The electronic structure of HfO{sub 2} thin films is investigated employing resonant photoelectron spectroscopy (resPES). The detailed analysis of the O1s resonance profile enables the determination of the partial density of states for the valence and the conduction bands as well as the electronic band gap to be 6.2 eV. The position of the charge neutrality level is evaluated. Thereby, it is demonstrated that the resPES data are able to combine information both for the valence as well as for the conduction band states. In addition, evidences for intrinsic in-gap states attributed to polaronic and charge transfer states are given. Electronic charges within the atomic layer deposition-HfO{sub 2} films are identified, pointing out that the amount of charges is essential to determine the accurate position of the surface potentials.
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DOI:
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期刊:
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DOI:
--
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期刊:
影响因子:
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通讯作者:
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