Evidence of O-H Bond in the Bulk State of Protonic Conductor Y-Doped SrCeO3 by Soft-X-Ray Spectroscopy
Evidence of O-H Bond in the Bulk State of Protonic Conductor Y-Doped SrCeO3 by Soft-X-Ray Spectroscopy
复制标题
通过软 X 射线光谱证明质子导体 Y 掺杂 SrCeO3 体态中的 O-H 键
DOI：
10.1143/jjap.42.l1265
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发表时间：
2003
影响因子：
1.5
通讯作者：
T. Tsukamoto
中科院分区：
文献类型：
--
作者：
T. Higuchi;S. Yamaguchi;N. Sata;Shik Shin;T. Tsukamoto
用软X射线发射谱(SXES)和X射线吸收谱(XAS)研究了Y掺杂的质子导体SrCeO_3带隙区域的电子结构，它们反映了体态电子结构。O1sSXES谱显示出三个O2p态，分别对应费米能级附近的价带顶部和导带的底部。O1SXAS谱表明存在与三个O2p态能量位置相匹配的氢结构。这些发现是O-H键处于体态的直接证据。
The electronic structure in the band-gap region of protonic conductor Y-doped SrCeO3 has been investigated by soft-X-ray emission spectroscopy (SXES) and X-ray absorpiton spectroscopy (XAS), which reflect the electronic structure in the bulk state. The O 1s SXES spectrum exhibits three O 2p states, which correspond to the top of the valence band, near the Fermi level, and the botttom of the conduction band. The O 1s XAS spectrum exhibits the existence of hydrogen structures whose energy positions match with those of the three O 2p states. These findings are direct evidence of the O-H bond in the bulk state.