Time-resolved electrostatic force microscopy using mechanical synchronization

• Project/Area Number: 25600099
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: Osaka University
• Principal Investigator: MATSUMOTO Takuya 大阪大学, 理学(系)研究科(研究院), 教授 (50229556)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 原子間力顕微鏡 / 時間分解静電気力測定 / 周波数シフト / 有機太陽電池 / 再結合寿命

Outline of Final Research Achievements

We developed time-resolved electrostatic force microscopy using organic solar cell samples. The samples were prepared by spin coating of PCBM/MDMO-PPV on PEDOT-PSS/ITO substrates. Obvious correlation of the image contrast in Kelvin force microscopy under dark condition to domain structures which are formed by phase separation of donor and acceptor was obtained. We concluded that the top-most surface is PCBM domain. We also obtained the images of electrostatic force microscopy in dark condition. The electrostatic force images indicates localized electric polarization of which distribution is quite different from topography. Electrostatic force of photo-induced charge generated by irradiation of 532nm laser light was detected. At this time, we are challenging to obtain the image of photo-induced charge.

Research Products

• [Presentation] 有機太陽電池薄膜における電荷分布の微細構造 (2015)
  • Author(s): 荒木 健人、家 裕隆、安蘇 芳雄、松本 卓也
  • Organizer: 日本化学会第95春季年会(2015)
  • Place of Presentation: 日本大学理工学部船橋キャンパス／薬学部 (千葉県船橋市)
  • Year and Date: 2015-03-26
• [Presentation] 有機太陽電池薄膜表面の局所静ポテンシャル分布 (2014)
  • Author(s): 荒木 健人、陣内 青萌、 家 裕隆 、安蘇 芳雄、松本 卓也
  • Organizer: 2014年度関西薄膜・表面物理セミナー
  • Place of Presentation: グリーンビレッジ交野(大阪府交野市)
  • Year and Date: 2014-11-28
• [Presentation] 周波数変調静電気力画像による有機薄膜上の電荷分布観察 (2014)
  • Author(s): 荒木健人、家 裕隆、安蘇 芳雄、松本 卓也
  • Organizer: 第75回 応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学 札幌キャンパス(北海道札幌市)
  • Year and Date: 2014-09-17