|Budget Amount *help
¥59,150,000 (Direct Cost: ¥45,500,000、Indirect Cost: ¥13,650,000)
Fiscal Year 2018: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2017: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2016: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2015: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2014: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
|Outline of Final Research Achievements
Various quantum confined semiconductor nanoparticles (SNPs) such as quantum dots (QDs), nanorods (NRs), and nanoplatelets (NPLs) were synthesized and their exciton dynamics were examined by state-selective fs transient absorption spectroscopy and ps luminescence spectroscopy. The efficient and ultrafast carrier transfer from band-edge state and higher excited state (hot carrier transfer) were observed in SNPs-acceptor systems, and the correlation between carrier transfer and the structure of SNPs was revealed. By attaching a photochromic molecule to SNPs, efficient optical switching of SNPs luminescence was demonstrated. In addition, multiexciton dynamics followed by laser oscillation in single perovskite microcrystals were examined by fs transient absorption microscopy.
Furthermore, single and multiexciton luminescence from a single QD were successfully controlled by AFM manipulation and plasmonic nanostructures.