CoAl2O4-Fe2O3 p-n nanocomposite electrodes for photoelectrochemical cells

被引：37

作者：

Ahn, Kwang-Soon ^{[1
]}

Yan, Yanfa ^{[1
]}

Kang, Moon-Sung ^{[2
]}

Kim, Jin-Young ^{[1
]}

Shet, Sudhakar ^{[1
]}

Wang, Heli ^{[1
]}

Turner, John ^{[1
]}

Al-Jassim, Mowafak ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

[2] Samsung Adv Inst Technol, Energy & Environm Lab, Yongin 446712, Gyeonggi Do, South Korea

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 02期

关键词：

annealing; cobalt compounds; electrochemical electrodes; electron-hole recombination; iron compounds; nanocomposites; photoelectrochemical cells; photoelectrochemistry; PHOTOELECTROLYSIS; WATER; TIO2; ZNO;

D O I：

10.1063/1.3183585

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

CoAl2O4-Fe2O3 p-n nanocomposite electrodes were deposited on Ag-coated stainless-steel substrates and annealed at 800 degrees C. Their photoelectrochemical (PEC) properties were investigated and compared with that of p-type CoAl2O4 films. We found that the nanocomposite electrodes exhibit much improved PEC photoresponse as compared to the reference p-type CoAl2O4 electrodes. We speculate that the enhancement is due to the formation of a three-dimensional junction between p-type CoAl2O4 and n-type Fe2O3 nanoparticles, which improves electron-hole separation, thus reducing charge recombination upon light illumination.

引用

页数：3

共 16 条

[1]

Ahn K.S., 2008, Appl. Phys. Lett, V93, P163117, DOI DOI 10.1063/1.3002282

[2] Photoelectrochemical properties of n-incorporated ZnO films deposited by reactive RF magnetron sputtering [J].