表面处理 TiO2 纳米颗粒用于染料敏化太阳能电池，显著提高了性能。

Surface-treated TiO2 nanoparticles for dye-sensitized solar cells with remarkably enhanced performance.

机构信息

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.

出版信息

Langmuir. 2011 Dec 6;27(23):14594-8. doi: 10.1021/la2034627. Epub 2011 Nov 7.

DOI:10.1021/la2034627

PMID:22013973

Abstract

Dye-sensitized solar cells (DSSCs) were prepared by capitalizing on mesoporous P-25 TiO(2) nanoparticle film sensitized with N719 dyes. Subjecting TiO(2) nanoparticle films to TiCl(4) treatment, the device performance was improved. More importantly, O(2) plasma processing of TiO(2) film that was not previously TiCl(4)-treated resulted in a lower efficiency; by contrast, subsequent O(2) plasma exposure after TiCl(4) treatment markedly enhanced the power conversion efficiency, PCE, of DSSCs. Remarkably, with TiCl(4) and O(2) plasma treatments dye-sensitized TiO(2) nanoparticle solar cells produced with 21 μm thick TiO(2) film illuminated under 100 mW/cm(2) exhibited a PCE as high as 8.35%, twice of untreated cells of 3.86%.

摘要

染料敏化太阳能电池（DSSCs）是通过利用 N719 染料敏化介孔 P-25 TiO2 纳米颗粒薄膜制备的。对 TiO2 纳米颗粒薄膜进行 TiCl4 处理，可提高器件性能。更重要的是，未经 TiCl4 处理的 TiO2 薄膜的 O2 等离子体处理导致效率降低；相比之下，TiCl4 处理后随后进行 O2 等离子体暴露则显著提高了 DSSCs 的功率转换效率（PCE）。值得注意的是，经过 TiCl4 和 O2 等离子体处理后，在 100 mW/cm2 的光强下，使用 21μm 厚 TiO2 薄膜制备的染料敏化 TiO2 纳米颗粒太阳能电池的 PCE 高达 8.35%，是未经处理的电池（3.86%）的两倍。