受N719染料吸附特性影响的染料敏化纳米晶TiO₂太阳能电池的光电流-电压

Photocurrent-voltage of a dye-sensitized nanocrystalline TiO2 solar cells influenced by N719 dye adsorption properties.

作者信息

Lee Jae-Wook, Hwang Kyung-Jun, Park Dong-Won, Park Kyung-Hee, Shim Wang-Geun, Kim Sang-Chai

机构信息

Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Korea.

出版信息

J Nanosci Nanotechnol. 2007 Nov;7(11):3717-21. doi: 10.1166/jnn.2007.055.

DOI:10.1166/jnn.2007.055

PMID:18047044

Abstract

Titanium particles of single-phase anatase nanocrystallites were prepared by the hydrolysis of titanium tetraisopropoxide. A dye-sensitized solar cell (DSSC) was fabricated by adsorbing cis-bis(isothiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylato)-ruthenium(II)bis-tetrabutylammonium dye (N719) onto TiO2 film. The samples were characterized by XRD, TEM, FE-SEM, AFM, and Brunauer-Emmett-Teller (BET) analysis. The influence of the acetic acid treatment of TiO2 electrode with different concentrations on the photovoltaic performance of DSSC was investigated. It was found that DSSC had better photoelectric performance when the TiO2 electrode was treated by acetic acid of 0.5 M. An equivalent circuit analysis using the one-diode model was used to evaluate the influences of adsorption quantity and acetic acid treatment on the energy conversion efficiency of DSSC. A nonlinear least-square optimization method was used to determine five model parameters.

摘要

通过四异丙醇钛的水解制备了单相锐钛矿纳米微晶的钛颗粒。通过将顺式双（异硫氰酸根合）双（2,2'-联吡啶-4,4'-二羧酸根）钌（II）双四丁基铵染料（N719）吸附到TiO₂薄膜上来制造染料敏化太阳能电池（DSSC）。通过XRD、TEM、FE-SEM、AFM和Brunauer-Emmett-Teller（BET）分析对样品进行了表征。研究了不同浓度的乙酸处理TiO₂电极对DSSC光伏性能的影响。发现当TiO₂电极用0.5 M的乙酸处理时，DSSC具有更好的光电性能。使用单二极管模型进行等效电路分析，以评估吸附量和乙酸处理对DSSC能量转换效率的影响。采用非线性最小二乘优化方法确定五个模型参数。