Development of a Shottky-barrier organic thin-film solar cell having a very large internal electric field

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560012
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Shimane University
• Principal Investigator: HIROMITSU ICHIRO 島根大学, 総合理工学研究科(研究院), 教授 (40199138)
• Co-Investigator(Kenkyū-buntansha): HANDA Makoto 島根大学, 総合理工学部, 教授 (70208700)
• Co-Investigator(Renkei-kenkyūsha): TANAKA Senku 島根大学, 総合理工学部, 助教 (20397855)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 有機太陽電池 / 内部電場 / ショットキー障壁 / 電場変調

Outline of Final Research Achievements

Internal electric field and photovoltaic performance of the Schottky-barrier solar cells made of a Zn-phthalocyanine(ZnPc) thin film were studied. By an insertion of a NTCDA buffer layer between the ZnPc film and transparent electrode, the short-circuit current increased to a 6 times larger value. When PTCBI was used for the buffer layer, an interesting phenomenon was observed, i.e. the photocarrier-generation efficiency in the PTCBI layer was anomalously high. A new experimental technique, Electroabsorption under White Light Illumination(EAWL), was developed, which enabled the measurement of the internal electric field in the device under operation.

Free Research Field

有機半導体