Plasmon-Enhanced Photocurrent Generation from Self-Assembled Monolayers of Phthalocyanine by Using Gold Nanoparticle Films

被引：50

作者：

Sugawa, Kosuke ^{[1
]}

Akiyama, Tsuyoshi ^{[1
,2
]}

Kawazumi, Hirofumi ^{[3
]}

Yamada, Sunao ^{[1
,2
,4
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Mat Phys & Chem, Nishi Ku, Fukuoka 8190395, Japan

[2] Kyushu Univ, Fac Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan

[3] Kinki Univ Kyushu, Dept Biol & Environm Chem, Iizuka, Fukuoka 8208555, Japan

[4] Kyushu Univ, Ctr Future Chem, Nishi Ku, Fukuoka 8190395, Japan

来源：

LANGMUIR | 2009年 / 25卷 / 06期

关键词：

NONRESONANCE RAMAN-SCATTERING; FLUORESCENCE ENHANCEMENT; SOLAR-CELLS; SURFACE; FIELD; RESONANCE; MOLECULES; COPPER; SILVER; SPECTROSCOPY;

D O I：

10.1021/la803831c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of localized electric fields on the photocurrent responses of phthalocyanine that was self-assembled on a gold nanoparticle film was investigated by comparing the conventional and the total internal reflection (TIR) experimental systems. In the case of photocurrent measurements, self-assembled monolayers (SAMs) of a thiol derivative of palladium phthalocyanine (PdPc) were prepared on the surface of gold-nanoparticle film that was fixed on the surface of indium-tin-oxide (ITO) substrate via a polyion (PdPc/AuP/polyion/ITO) or on the ITO surface (PdPc/ITO). Photocurrent action spectra from the two samples were compared by using the conventional spectrometer, and were found that PdPc/AuP/polyion/ITO gave considerably larger photocurrent signals than PdPc/ITO under the identical concentration of PdPc. In the case of the TIR experiments for the PdPc/AuP/polyion/ITO and the PdPc/AuP/Glass systems, incident-angle profiles of photocurrent and emission signals were correlated with each other, and they were different from that of the PdPc/ITO system. Accordingly, it was demonstrated that the photocurrent signals were certainly enhanced by the localized electric fields of the gold-nanoparticle film.

引用

页码：3887 / 3893

页数：7

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