Abnormal Capacitance Increasing at Elevated Temperature in Tantalum Capacitors with PEDOT:PSS Electrodes

IF 1.3 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Active and Passive Electronic Components Pub Date : 2018-10-01 DOI:10.1155/2018/9864387

Q. Pan, Qiao Liu, Yuanjiang Yang, D. Tian

引用次数: 1

Abstract

Due to the importance of capacitance temperature stability in precise analog circuit applications, capacitance instability at elevated temperature of 125°C was investigated in tantalum capacitors with PEDOT:PSS counter electrodes. Capacitance-voltage measurement supposed that residual ions in the PEDOT:PSS dispersion caused an accumulation of charges at the dielectric-cathode interface which contributed to an increase in the dielectric constant and resulted in the capacitance increasing at high temperature. Based on the hypothesis, water wash process was applied and capacitance dropped significantly at high temperature. This study shows that an additional water wash process is necessary to improve the capacitance temperature stability after each dispersion dip step.

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采用PEDOT:PSS电极的钽电容器在高温下异常电容增大

由于电容温度稳定性在精密模拟电路应用中的重要性，研究了在125°C高温下使用PEDOT:PSS对电极的钽电容器的电容不稳定性。电容电压测量假设PEDOT:PSS色散中的残留离子导致介电-阴极界面电荷积累，导致介电常数增加，导致高温下电容增大。在此假设的基础上，采用水洗工艺，在高温下电容显著下降。研究表明，为了提高电容温度稳定性，需要在每个分散浸镀步骤后进行额外的水洗。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Active and Passive Electronic Components ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

13 weeks

期刊介绍： Active and Passive Electronic Components is an international journal devoted to the science and technology of all types of electronic components. The journal publishes experimental and theoretical papers on topics such as transistors, hybrid circuits, integrated circuits, MicroElectroMechanical Systems (MEMS), sensors, high frequency devices and circuits, power devices and circuits, non-volatile memory technologies such as ferroelectric and phase transition memories, and nano electronics devices and circuits.