SBIR Phase I: Novel Thin Films Based High Efficiency Ferroelectric Cathode

SBIR 第一阶段：基于新型薄膜的高效铁电阴极

• 批准号: 9960957
• 负责人: Abdelhakim Bensaoula
• 金额: $ 9.99万
• 依托单位: IONWERKS, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9960957&HistoricalAwards=false
• 关键词: SBIR; Phase; Novel; Thin; Films

This SBIR Phase I Project develop a low-voltage ferroelectric cathode technology based on ferroelectric films for application to cold cathodes for accelerators, high frequency devices, mass spectrometers and other instruments based on cold cathodes. Ferroelectric materials emit pulses of electrons from their surface during rapid polarization reversal. High current density (up to 100 A/cm2) has been obtained using cathodes with thick ferroelectric layers, requiring excitation voltages in the 3-5 kV range. However, it is desirable to develop ferroelectric cathodes which require operating voltages in the hundred's of volts range, to make them more energy efficient and less susceptible to high voltage-induced breakdown. The primary objective of the proposed research program will be the development of low-voltage, high-current, reliable, film-based ferroelectric cathodes. This will be accomplished by advancing the current understanding of the material requirements and electrode configuration to maximize the electron emission current. It is expected that the proposed technology will provide high current, low voltage ferroelectric cathodes for a variety of applications requiring lower power consumption.

该SBIR一期项目开发基于铁电薄膜的低压铁电阴极技术，用于加速器、高频器件、质谱仪和其他基于冷阴极的仪器的冷阴极。 铁电材料在快速极化反转期间从其表面发射电子脉冲。使用具有厚铁电层的阴极已经获得了高电流密度（高达100 A/cm 2），需要在3-5 kV范围内的激励电压。然而，希望开发需要数百伏范围内的工作电压的铁电阴极，以使它们更节能并且不易受高压引起的击穿的影响。该研究计划的主要目标是开发低电压，高电流，可靠的薄膜铁电阴极。这将通过推进当前对材料要求和电极配置的理解来实现，以最大化电子发射电流。预期所提出的技术将为需要较低功耗的各种应用提供高电流、低电压铁电阴极。