Fabrication of size-controlled organic semiconductor nanocrystals and their thin films for organic photovoltaic solar cell

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390026
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials engineering
• Research Institution: Yamagata University
• Principal Investigator: MASUHARA AKITO 山形大学, 理工学研究科, 准教授 (30375167)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ナノ粒子 / 有機ナノ結晶 / 有機薄膜太陽電池 / ナノシート

Outline of Final Research Achievements

The problem on organic photovoltaic solar cells (OPV) is low power conversion efficiency (PCE). PCE is about 5% in mainstream bulk-hetero junction type OPV devices. The bulk-hetero junction forms nanostructure by annealing. The phase separations by annealing depend on inherent nature of molecules. Therefore, precise control of nano domain size is difficult. In this respect, we tried fabrication of columnar-like structure by simple technique such as liquid-liquid interfacial assembly technique using fullerene nanocrystals. By using this technique, we try to precise control of nanostructure in OPV. Fabricated OPV structure is invested structure and their PCE is about 3 %.

Free Research Field

ナノ材料工学