XJIPC OpenIR  > 材料物理与化学研究室
Alternative TitleEffect of Li+ dopant on the electrical properties and energy band structure of ZnO varistor ceramics
王发顶; 康雪雅
Source Publication电子元件与材料
Abstract采用氧化物固相合成法,制备了掺Li2CO3的ZnO压敏陶瓷.研究了掺Li2CO3量对ZnO压敏陶瓷电性能和能带结构的影响.结果表明:当x(Li2CO3)从0增加到0.50%时,压敏电位梯度从529 V/mm增大到2 170 V/mm.XRD测试发现,掺Li2CO3并未出现新相结构.晶界势垒高度揭示,ZnO晶粒尺寸的迅速减小是压敏电位梯度急剧增高的主要原因.Li+置换Zn2+,将会在禁带中价带的顶部形成附加的受主能级,使能带发生畸变.
Other AbstractLi_2CO_3-doped ZnO varistor ceramics were prepared using oxide solid phase synthesis method.The effects of dopant amount on the electrical properties and energy band of ZnO varistor ceramics were studied.The results show that the voltage gradient of ZnO varistor ceramics increases from 529 V/mm to 2 170 V/mm with increasing x (Li_2CO_3) from 0 to 0.50.Through measuring the barrier height at grain boundaries,it is found that the sharp decrease of ZnO grain size mainly contributes to the significant increase of voltage gradient.XRD analysis indicates that there is no new phase present in the ZnO varistor ceramics when Li_2CO_3 is doped.With the substitution of Zn~(2+) by Li~+,an additional acceptor level is formed in the band gap and nearby the top of valence band,inducing the distortion of energy band.
KeywordZno压敏陶瓷 li+掺杂 压敏电位梯度 晶界势垒高度 能带结构
Indexed ByCSCD
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
王发顶,康雪雅. Li~+对ZnO压敏陶瓷电性能和能带结构的影响[J]. 电子元件与材料,2009,28(5):30-32.
APA 王发顶,&康雪雅.(2009).Li~+对ZnO压敏陶瓷电性能和能带结构的影响.电子元件与材料,28(5),30-32.
MLA 王发顶,et al."Li~+对ZnO压敏陶瓷电性能和能带结构的影响".电子元件与材料 28.5(2009):30-32.
Files in This Item:
File Name/Size DocType Version Access License
Li~+对ZnO压敏陶瓷电性能和能带结构(988KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[王发顶]'s Articles
[康雪雅]'s Articles
Baidu academic
Similar articles in Baidu academic
[王发顶]'s Articles
[康雪雅]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[王发顶]'s Articles
[康雪雅]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Li~+对ZnO压敏陶瓷电性能和能带结构的影响.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.