High voltage SOI LDMOS with a compound buried layer

High voltage SOI LDMOS with a compound buried layer
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具有化合物埋层的高压 SOI LDMOS

DOI:
10.1088/1674-4926/33/10/104003
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发表时间:
2012-10
期刊:
Chinese Journal of Semiconductors
影响因子:
--
通讯作者:
Li, Zhaoji
Li, Zhaoji
中科院分区:
其他
文献类型:
--
作者:
Wang, Qi;Luo, Yinchun;Zhang, Bo;Li, Zhaoji

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提出了一种具有复合埋层(CBL)的SOI LDMOS。CBL由具有Si窗口和两个氧化台阶的上埋氧层(UBOX)、多晶硅层和下埋氧层(LBOX)组成。在阻断状态下,位于UBOX和LBOX顶界面上的空穴使UBOX和LBOX中的电场强度分别从传统SOI(C-SOI)LDMOS中埋氧层(BOX)的88 V/μm增加到163 V/μm和460 V/μm。与C-SOI LDMOS相比,CBL LDMOS的击穿电压从477 V提高到847 V,最高工作温度降低了6 K。
An SOI LDMOS with a compound buried layer (CBL) was proposed. The CBL consists of an upper buried oxide layer (UBOX) with a Si window and two oxide steps, a polysilicon layer and a lower buried oxide layer (LBOX). In the blocking state, the electric field strengths in the UBOX and LBOX are increased from 88 V/μm of the buried oxide (BOX) in a conventional SOI (C-SOI) LDMOS to 163 V/μm and 460 V/μm by the holes located on the top interfaces of the UBOX and LBOX, respectively. Compared with the C-SOI LDMOS, the CBL LDMOS increases the breakdown voltage from 477 to 847 V, and lowers the maximal temperature by 6 K.
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发表时间: 1998-06
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