期刊
JOURNAL OF INORGANIC MATERIALS
卷 38, 期 8, 页码 987-988出版社
SCIENCE PRESS
DOI: 10.15541/jim20231001
关键词
EUV lithography; micro piezoelectric ceramic tube; piezoelectric high-temperature nozzle; high-temperature piezoelectric ceramic
By utilizing piezoelectric high-temperature nozzle technology based on inverse-piezoelectric effect, researchers have achieved stable output of high-temperature tin droplet targets, making a breakthrough in the development of extreme ultra-violet lithography.
Extreme Ultra-Violet (EUV) lithography utilizes Laser Produced Plasma (LPP) technology to generate EUV light with a 13.5 nm wavelength by bombarding tin liquid droplets with high-power lasers. Piezoelectric high-temperature nozzle based on inverse-piezoelectric effect is the key component for obtaining high-frequency tin droplet targets. Here, breakthroughs have been made in the composition design, fine preparation of high-temperature micro piezoelectric ceramic tubes that can withstand temperatures up to 250 degrees C, and structure design, fabrication and precise driving control of the piezoelectric high-temperature nozzle. Based on a self-constructed high-temperature tin droplets generation platform, a stable output of high-temperature tin droplet targets with repetition frequency of 20 kHz and diameter of 100 mu m is successfully achieved.
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