Fabrication of Charge-transfer Complex-Perovskite Composite Films

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K20525
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields
• Research Institution: Yamagata University
• Principal Investigator: Hinako Ebe 山形大学, 理学部, 助教 (90962762)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: ペロブスカイトナノ結晶 / 電荷移動錯体 / 複合膜

Outline of Final Research Achievements

We fabricated composite films of charge transfer complexes (CT) and lead halide perovskite nanocrystals (PNC) using a simple solution process for optoelectronic applications. The resulting CT-PNC composite films successfully formed heterostructures through electrostatic interactions. Additionally, the introduction of charge transfer complexes into PNC film exhibited photoluminescence (PL) quenching of perovskite emission and a shortening of PL decay time, suggesting interactions between CT and PNC such as energy transfer or charge transfer. These composite films with heterostructures are expected to promote material interactions and be applied to new energy conversion materials.

Free Research Field

有機-無機複合材料

Academic Significance and Societal Importance of the Research Achievements

CT-PNCの界面形成は、材料間相互作用を促進し、エネルギー移動および電荷移動を介した新たなエネルギー変換材料の創出に大きく貢献する。また、各材料の励起子準位制御を自在に制御することができ、電荷移動錯体のフレンケル励起子およびPNCのワニエ励起子の励起子カップリングによるハイブリッド励起子の実現が期待され、優れた非線形光学特性を備えた光電材料としての利用が期待される。以上より、本成果で得られたCT-PNCの複合膜は、効率的なエネルギー変換および非線形光学応用に有用な技術であり、学術的意義や社会的意義に高い意義をもつ。