Revealing the mechanims of the charge-transfer state formation at organic pai-conjugated molecules/metal interface

2014 Fiscal Year Final Research Report

• Project/Area Number: 25870034
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Applied materials; Physical chemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology (2014); Iwate University (2013)
• Principal Investigator: HOSOKAI Takuya 独立行政法人産業技術総合研究所, 計測フロンティア研究部門, 研究員 (90613513)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 界面電荷移動 / 界面電荷移動準位 / π共役系有機分子 / 貴金属単結晶 / 光電子分光法

Outline of Final Research Achievements

The mechanism of charge-transfer (CT) state formation at organic/metal interfaces was investigated by using synchrotron radiation based-angle resolved ultraviolet photoelectron spectroscopy. We found that diindenoperylene (C32H16) adsorbed on Ag(111) and Cu(111) showed CT states due to the CT from the metals to the unoccupied states of DIP, irrespective to the crystallinity and surface plane of the substrates, molecular orientation of DIP. By employing other organic molecules, it was implied that a key for the formaton of the CT states is a chemical structure that satisfies the Huekele's rule.

Free Research Field

有機半導体薄膜物性