Re-evaluation of Recombination Losses in Dye-Sensitized Cells: The Failure of Dynamic Relaxation Methods to Correctly Predict Diffusion Length in Nanoporous Photoelectrodes

被引：85

作者：

Barnes, Piers R. F. ^{[1
]}

Liu, Lingxuan ^{[1
]}

Li, Xiaoe ^{[1
]}

Anderson, Assaf Y. ^{[1
]}

Kisserwan, Hawraa ^{[2
]}

Ghaddar, Tarek H. ^{[2
]}

Durrant, James R. ^{[1
]}

O'Regan, Brian C. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[2] Amer Univ Beirut, Dept Chem, Beirut 110236, Lebanon

来源：

NANO LETTERS | 2009年 / 9卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

TIO2; SOLAR-CELLS; NANOSTRUCTURED SEMICONDUCTOR ELECTRODES; CONVERSION EFFICIENCY; ENERGY CONVERSION; CHARGE-TRANSPORT; INJECTION; COLLECTION; VOLTAGE; LIGHT; FILMS;

D O I：

10.1021/nl901753k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photocurrents generated by thick, strongly absorbing, dye-sensitized cells were reduced when the electrolyte iodine concentration was increased. Electron diffusion lengths measured using common transient techniques (L(n)) were at least two times higher than diffusion lengths measured at steady state (L(IPCE))- Charge collection efficiency calculated using L(n) seriously overpredicted photocurrent, while L(IPCE) correctly predicted photocurrent. This has Implications for optimizing cell design.

引用

页码：3532 / 3538

页数：7

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