1. 中国科学院 机构 微电子研究所,北京,100029
2. 中国科学院大学 机构,北京,101408
纸质出版:2019
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赵巍颂, 田敏, 钟汇才. 基于ALDAlO新型反熔丝器件的可靠性研究[J]. 微电子学与计算机, 2019, 36(1): 41-45.
ZHAO Wei-song, TIAN Min, ZHONG Hui-cai. Study on Reliability of A New Anti-fuse Device Based on ALD Al[J]. 2019, 36(1): 41-45.
金属-绝缘体-金属(Metal-Insulator-Metal
MIM)反熔丝器件常被用于现场可编程逻辑阵列(Field Programmable Gate Array
FPGA)的互联结构单元.本文使用高介电常数材料AlO作为介质层
使用原子层沉积(Atomic Layer Deposition
ALD)技术
制备了高可靠性
高性能的MIM反熔丝单元.该反熔丝单元关态电阻超过1TΩ
同时开态电阻非常低
满足正态分布
集中在22 Ω左右
波动幅度很小
标准差仅为3.7 Ω
因此AlO反熔丝器件具有很高的开关比.本文研究了该器件编程前后两种状态的特性及时变击穿特性(Time Dependent Dielectric Breakdown
TDDB).研究结果表明
在2 V工作电压下
未编程的反熔丝单元的预测寿命为1591年
同时
当读电流在0~20 mA时
编程后的反熔丝保持稳定.这说明该反熔丝单元在低阻态和高阻态都具有非常高的可靠性.
Metal-Insulator-Metal (MIM) antifuse has always been used in Field Programmable Gate Array (FPGA) interconnection structure unit. A High-performance and High-reliability Metal-Insulator-Metal antifuse was fabricated with high κAlO deposited by Atomic Layer Deposition (ALD) as the dielectric. The anti-fuse units off-state resistance exceeds 1TΩ
and the on-state resistance is very low
which satisfies the normal distribution
the on-resistance value is concentrated around 22Ω
and the standard deviation is only 3.7Ω
so it has high on/off ratio. In this paper
the Time Dependent DielectricBreakdown (TDDB) of the structure is studied. The results show that the predicted lifetime of the unprogrammed anti-fuse cell is 1591 years at 2V operating voltage. At the same time
when the read current is 0~20mA
the programmed anti-fuse remains stable. This shows that the antifuse has a very high reliability in both low-impedance and high-impedance states.
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