In situ preparation of CdS nanoparticles imbedded in a polyelectrolyte multilayer for photocurrent generation

被引：13

作者：

Lee, Wonjoo ^{[1
]}

Min, Sun-Ki ^{[1
]}

Shin, Seunghoon ^{[1
]}

Han, Sung-Hwan ^{[1
]}

Lee, Soo-Hyoung ^{[2
]}

机构：

[1] Hanyang Univ, Dept Chem, Sungdong Ku, Seoul 133791, South Korea

[2] Chonbuk Natl Univ, Sch Semicond & Chem Engn, Jeonju 561756, South Korea

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 02期

关键词：

This work was supported by the Korea Foundation for International Cooperation of Science and Technology (KICOS) through a grant provided by the Korean Ministry of Science and Technology (MOST) in No. K20501000002-07-E0100-00210. W. Lee wishes to thank Brain Korea 21 for the award of financial support. This work was also partly supported by Seoul R&BD Program (10919);

D O I：

10.1063/1.2831718

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

CdS nanoparticles (NPs) were prepared and imbedded in polyelectrolyte multilayers (PEMs) in situ and applied to the photocurrent generation. The PEM films of the poly(propylviologen)/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) were prepared using layer-by-layer deposition. The Br- ions of the viologen groups were exchanged with S2- ion by dipping the PEMs films in a Na2S solution. Then, the films were dipped in a solution containing Cd2+ to give CdS NPs of less than 10 nm in size. The CdS NP-PEM films form an efficient acceptor-sensitizer dyad system, which showed a good photocurrent of 70 nA/cm(2) at 380 nm for a 3.5 bilayer sample. (c) 2008 American Institute of Physics.

引用

页数：3

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