Preparation of near-infrared light-sensitized upconversion which points to application in organic solar cells

2016 Fiscal Year Final Research Report

• Project/Area Number: 26620033
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Organic chemistry
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Kubo Yuji 首都大学東京, 都市環境科学研究科, 教授 (80186444)
• Co-Investigator(Renkei-kenkyūsha): NISHIYABU Ryuhei 首都大学東京, 都市環境科学研究科, 助教 (00432865) ; TAKAGI Shinsuke 首都大学東京, 都市環境科学研究科, 教授 (40281240) ; SHIMADA Tetsuya 首都大学東京, 都市環境科学研究科, 助教 (50252317)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: フォトンアップコンバージョン / 三重項－三重項消滅 / 近赤外線吸収色素 / BODIPY / 増感剤

Outline of Final Research Achievements

Triplet-triplet annihilation-based photon upconversion (TTA-UC), low-energy photons being converted into higher ones by a bimolecular mechanism involving a sensitizer and two emitter molecules, have attracted increasing attentions as promising methods for energy conversion from low-energy excitation to higher energy light. In this study, the quest of microenvironments aiming at developing efficient UC has been carried out, in which it was found that the addition of metal complexes into the system enabled multi-color emission. Alternatively, near-infrared absorbing dyes as a candidate of sensitizers was successfully synthesized.

Free Research Field

有機化学