TiO2 nanocrystals -: MEH-PPV composite thin films as photoactive material

被引：67

作者：

Petrella, A

Tamborra, M

Cozzoli, PD

Curri, ML

Striccoli, M

Cosma, P

Farinola, GM

Babudri, E

Naso, F

Agostiano, A

机构：

[1] Univ Bari, Dipartimento Chim, I-70126 Bari, Italy

[2] Univ Bari, Dipartimento Chim, CNR, IPCF Sez Bari, Bari, Italy

[3] Univ Bari, Dipartimento Chim, CNR, ICCOM,Sez Bari, I-70126 Bari, Italy

来源：

THIN SOLID FILMS | 2004年 / 451卷

关键词：

polymer/nanocrystals composite; colloidal nanocrystals; TiO2; MEH-PPV; photoactivity;

D O I：

10.1016/j.tsf.2003.10.106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optoelectronic processes occurring in colloidal anatase TiO2 nanocrystals/MEH-PPV conjugated polymer blends are reported. Composite films were prepared by spin-coating an homogeneous solution of low molecular weight MEH-PPV and surfactant-capped TiO2 nanocrystals onto low resistivity ITO substrates. Both nearly spherical and rod-like titania nanoparticles were used in the hybrid structures and the resulting blends comparatively examined, as a function of TiO2 nanoparticle morphology. The photoinduced charge transfer and recombination processes at the interface between the two components were studied by steady-state optical spectroscopy and photoelectrochemical experiments. A significant fluorescence quenching of the polymer occurred in MEH-PPV/TiO2 nanorods hetero-junctions and higher photoactivity of as prepared blends compared to the single components was observed and explained. (C) 2003 Elsevier B.V. All rights reserved.

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页码：64 / 68

页数：5

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