Light Trapping via Multiple Plasmonic Structures and Their Applications to Organic Solar Cells

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390051
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Applied materials
• Research Institution: Niigata University
• Principal Investigator: BABA Akira 新潟大学, 自然科学系, 准教授 (80452077)
• Co-Investigator(Renkei-kenkyūsha): SHINBO KAZUNARI 新潟大学, 自然科学系, 教授 (80272855)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 表面プラズモン / 有機太陽電池 / ナノ構造

Outline of Final Research Achievements

In this work, we studied the enhancement of organic thin film solar cells by surface plasmon resonance (SPR) phenomena originated from grating-coupled technique and further improved their performance by metal nanoparticles (NPs). The devices of Al/P3HT: PCBM/Metal NPs:PEDOT:PSS/ITO were fabricated. The results from J-V curves indicated that the power conversion efficiency (PCE) of Al-coated grating substrate was 3.10 % which was better than that of flat substrate for 1.55 times. We further developed the Al-coated grating substrate by incorporated gold and silver NPs in to PEDOT:PSS layer. The PCE of Al-coated grating substrate with gold NPs and silver NPs were 3.25% and 3.17%, respectively. This indicated that the light absorption enhancement at the active layer is attributed to SPR excitation with strong near-field distributions penetrated into absorption polymer, which could lead to higher efficiencies due to the increased absorption, thus resulting in higher current generation.

Free Research Field

有機エレクトロニクス