Ultrafast Electron Injection from the S2 State of Carotenoids into TiO2 Nanoparticles

被引：0

作者：

Lee, Sebok ^{[1
]}

Park, Terry ^{[2
]}

Lee, Jaebeom ^{[2
]}

Pang, Yoonsoo ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Dept Chem, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea

[2] Gwangju Inst Sci & Technol, Dept Phys & Photon Sci, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2017年 / 17卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Photoinduced Electron Injection; Femtosecond Transient Absorption; Excited-State Dynamics; Carotenoids; Dye-Sensitized Solar Cells; TRANSIENT ABSORPTION; CARBONYL GROUP; THIN-FILMS; DYNAMICS; SEMICONDUCTOR; SPECTROSCOPY; 8'-APO-BETA-CAROTEN-8'-AL; PARTICLES; OXIDE;

D O I：

10.1166/jnn.2017.13369

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dye molecules attached to TiO2 nanoparticles have been of a great interest in the applications including dye-sensitized solar cells. In this paper, TiO2 nanoparticle sensitized with a natural photosynthetic dye, 8'-apo-beta-caroten-8'-oic acid (ACOA) was investigated by femtosecond transient absorption spectroscopy. Ultrafast excited state dynamics of ACOA and electron injection and recombination dynamics between dye molecules and TiO2 nanoparticles were compared by changing the excitation wavelength between 403 and 480 nm. Ultrafast electron injection into TiO2 nanoparticles with quantum yields of 0.33 was observed for both excitation wavelengths.

引用

页码：2685 / 2689

页数：5

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