Development of operand measurement method of structure/charge and discharge characteristics for all-solid-state rechargeable battery using helium ion microscopy

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14104
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Device related chemistry
• Research Institution: National Institute for Materials Science
• Principal Investigator: Sakai Chikako 国立研究開発法人物質・材料研究機構, ナノ材料科学環境拠点, NIMSポスドク研究員 (90580407)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: ヘリウムイオン顕微鏡 / 電位分布計測 / アクティブ電圧コントラスト / 積層型セラミックコンデンサ / ペロブスカイト太陽電池 / 全固体リチウムイオン二次電池

Outline of Final Research Achievements

By both an active voltage contrast (AVC) imaging using helium ion microscopy (HIM) and a contact potential difference imaging using Kelvin probe force microscopy (KPFM) which can quantitatively evaluate potential, we have been able to develop a new potential distribution measurement method. An in situ voltage-application system was incorporated into an HIM chamber. This allowed us to apply any voltage (±5 V) to a sample. We found that the AVC corresponding to the electrical potential of a multilayer ceramic capacitor in the secondary electron (SE) image could be observed when the applied voltage is less than or equal to 1.5 V. HIM observation of the perovskite solar cell was carried out. Despite the inclusion of organic materials, it is noteworthy that SE imaging could be achieved without adsorbing any metal.

Free Research Field

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