Dry-Spray Deposition of TiO2 for a Flexible Dye-Sensitized Solar Cell (DSSC) Using a Nanoparticle Deposition System (NPDS)

被引:12
作者
Kim, Min-Saeng [1 ]
Chun, Doo-Man [3 ]
Choi, Jung-Oh [1 ]
Lee, Jong-Cheon [1 ]
Kim, Yang Hee [4 ]
Kim, Kwang-Su [4 ]
Lee, Caroline Sunyong [4 ]
Ahn, Sung-Hoon [1 ,2 ]
机构
[1] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul 151142, South Korea
[2] Seoul Natl Univ, Inst Adv Machinery & Design, Seoul 151142, South Korea
[3] Univ Ulsan, Sch Mech Engn, Ulsan 680749, South Korea
[4] Hanyang Univ, Div Mat & Chem Engn, Gyeonggi Do 426791, South Korea
基金
新加坡国家研究基金会;
关键词
Dye-Sensitized Solar Cell; Nano Particle Deposition System; Dry-Spray; Double Layer Structure; Flexible Polymer; TEMPERATURE; ELECTRODES; METAL;
D O I
10.1166/jnn.2012.5548
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
TiO2 powders were deposited on indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrates for application to the photoelectrode of a dye-sensitized solar cell (DSSC). In the conventional DSSC manufacturing process, a semiconductor oxide such as TiO2 powder requires a sintering process at higher temperature than the glass transition temperature (T-g) of polymers, and thus utilization of flexible polymer substrates in DSSC research has been constrained. To overcome this restriction related to sintering, we used a nanoparticle deposition system (NPDS) that could produce a thin coating layer through a dry-spray method under atmospheric pressure at room temperature. The powder was sprayed through a slit-type nozzle having a 0.4 x 10 mm(2) rectangular outlet. In order to determine the deposited TiO2 thickness, five kinds of TiO2 layered specimens were prepared, where the specimens have single and double layer structures. Deposited powders on the ITO coated PET substrates were observed using FE-SEM and a scan profiler The thicker TiO2 photoelectrode with a DSSC having a double layer structure showed higher energy efficiency than the single layer case. The highest fabricated flexible DSSC displayed a short circuit current density J(sc) = 1.99 mA cm(-2), open circuit voltage V-oc = 0.71 V, and energy efficiency eta = 0.94%. These results demonstrate the possibility of utilizing the dry-spray method to fabricate a TiO2 layer on flexible polymer substrates at room temperature under atmospheric pressure.
引用
收藏
页码:3384 / 3388
页数:5
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