Photovoltaic Properties and Mechanism Analysis of a Dye/Al2O3 Alternating Assembly Structure by Electrochemical Impedance Spectroscopy

被引：13
|
作者：
Gao Rui [1 ]
Ma Bei-Bei [1 ]
Wang Li-Duo [1 ]
Shi Yan-Tao [1 ]
Dong Hao-Peng [1 ]
Qiu Yong [1 ]
机构：
[1] Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2011年 / 27卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Dye-sensitized solar cell; Alternating assembly structure; Equivalent circuit model; SENSITIZED SOLAR-CELLS; LONG-TERM STABILITY; ELECTRICAL-IMPEDANCE; DYE-SENSITIZATION; TIO2; ELECTRODES; PERFORMANCE; EFFICIENCY; FABRICATION; CONVERSION; CIRCUIT;
D O I：
10.3866/PKU.WHXB20110234
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
N3 dye and Al2O3 were used to form an alternating assembly structure. The current density-voltage (J-V) characterization showed that this structure improved the performance of dye-sensitized solar cells (DSCs). Electrochemical impedance spectroscopy (EIS) was used to study the internal resistance of this alternating assembly structured DSCs. The results showed that the resistance at the sensitized TiO2/electrolyte interface decreased as the number of (dye/Al2O3) units increased, and the device's conversion efficiency improved significantly. Based on the EIS results, a series of equivalent circuit models were well established to investigate the dye/Al2O3 alternating assembly structure theoretically.
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页码：413 / 418
页数：6
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