Excited state properties of anodic TiO2 nanotubes

被引：21

作者：

Kahnt, Axel ^{[1
,2
]}

Oelsner, Christian ^{[1
,2
]}

Werner, Fabian ^{[1
,2
]}

Guldi, Dirk M. ^{[1
,2
]}

Albu, Sergiu P. ^{[3
]}

Kirchgeorg, Robin ^{[3
]}

Lee, Kiyoung ^{[3
]}

Schmuki, Patrik ^{[3
,4
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany

[2] Univ Erlangen Nurnberg, Interdisciplinary Ctr Mol Mat, D-91058 Erlangen, Germany

[3] Univ Erlangen Nurnberg, Dept Mat Sci, Inst Surface Sci & Corros, D-91058 Erlangen, Germany

[4] King Abdulaziz Univ, Dept Chem, Jeddah 21413, Saudi Arabia

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 23期

关键词：

SENSITIZED SOLAR-CELLS; TRANSIENT ABSORPTION-SPECTROSCOPY; ANNEALING TEMPERATURE; THIN-FILM; ARRAYS; NANOPARTICLES; EFFICIENCY; PHOTOCATALYSTS; RECOMBINATION; NANOMATERIALS;

D O I：

10.1063/1.4810762

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Charge carriers, that is, holes as well as trapped and "free" electrons were investigated by means of time resolved spectroscopy in anodic TiO2 nanotubes that were heat treated at different temperatures. The lifetimes of the charge carrier were compared with those generated in reference layers of Solaronix Ti-Nanoxide D and Degussa P25 nanoparticles. Remarkably long lived "free" electrons were only noted in the TiO2 nanotubes. These findings have significance in view of any photoelectrochemical applications of TiO2 nanotubes. (C) 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

引用

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