Phase and photoelectrochemical behavior of solution-processed Fe2O3 nanocrystals for oxidation of water under solar light

被引：50

作者：

Borse, Pramod H. ^{[1
]}

Jun, Hwichan ^{[1
]}

Choi, Sun Hee ^{[1
,2
]}

Hong, Suk Joon ^{[1
]}

Lee, Jae Sung ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, Ecofriendly Catalysis & Energy Lab NRL, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol, Pohang Accelerator Lab, Div Res, Pohang 790784, South Korea

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 17期

关键词：

D O I：

10.1063/1.3005557

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Monodispersed iron-oxide nanocrystals of controlled sizes (5-16 nm) were prepared by the thermal decomposition of iron-oleate complex to fabricate photoanode films for photoelectrochemical oxidation of water under simulated solar light. The smallest 5 nm particles were made mostly of gamma-Fe2O3, but other sizes showed mixed phases with Fe3O4, whose fraction increased with size. Size-dependent photoanodic currents were also observed, showing maximum photocurrent density for 12 nm particles. The high photocurrents were attributed to the lowered electron-hole recombination rates for the nanocrystals with the sizes comparable to the hole diffusion length. (c) 2008 American Institute of Physics. [DOI: 10.1063/1.3005557]

引用

页数：3

共 14 条

[1] Photoelectrochemical studies of oriented nanorod thin films of hematite [J].