Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells
Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells
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DOI：
10.1016/j.electacta.2014.02.019
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发表时间：
2014-05-01
影响因子：
6.6
通讯作者：
Prabakar, K.
中科院分区：
文献类型：
--
作者：
Kim, Hee-Je;Kim, Dong-Jo;Prabakar, K.
合成了具有nabo-rice结构的硫化镍（NiS）薄膜，并将其用作量子点敏化太阳能电池（QDSSC）的对电极，研究了多硫化物的氧化还原反应。在掺氟氧化锡衬底上沉积NiS薄膜，可形成高效的液结QDSSC CE。在1个太阳（100 mW cm（-2））的照射下，基于QDSSC的NiS CE表现出2.97%的功率转换效率（η），其高于铂（1.45%）CE。电化学阻抗谱证实，NiS CE中eta的高值是由于对多硫电解质还原的电催化活性升高，也是由于CE-电解质界面电荷转移电阻（3.16 Ω）的缩小。(C)2014爱思唯尔有限公司版权所有。
Facile and nabo-rice structured nickel sulfide (NiS) thin films were synthesized and utilized as counter electrode (CE) in quantum dot sensitized solar cells (QDSSCs) for polysulfide redox reactions. NiS thin films deposited on fluorine-doped tin oxide substrate results in formation of highly efficient CE for liquidjunction QDSSCs. Under illumination of 1 sun (100 mW cm(-2)), the QDSSC based NiS CE exhibited power conversion efficiency (eta) of 2.97%, which is higher than platinum (1.45%) CE. Electrochemical impedance spectroscopy affirms that high value of eta in NiS CE is due to the elevated electro-catalytic activity towards polysulfide electrolyte reduction and also due to the scale-down in the charge transfer resistance (3.16 Omega) at the CE-electrolyte interface. (C) 2014 Elsevier Ltd. All rights reserved.