Dye-sensitized nickel(II)oxide photocathodes for tandem solar cell applications
Dye-sensitized nickel(II)oxide photocathodes for tandem solar cell applications
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DOI：
10.1088/0957-4484/19/29/295304
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发表时间：
2008-06
期刊：
影响因子：
3.5
通讯作者：
A. Nattestad;M. Ferguson;R. Kerr;Yi-bing Cheng;U. Bach
中科院分区：
文献类型：
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作者：
A. Nattestad;M. Ferguson;R. Kerr;Yi-bing Cheng;U. Bach
迄今为止，氧化镍（NiO）是少数几种已成功用于构建染料敏化光电阴极以及串联染料敏化太阳能电池的p型半导体之一。在这项研究中，我们提出了一种新的制备方法，用于制备基于预成型NiO纳米粉末的介孔NiO薄膜。关键属性，如孔径分布，结晶度，和内表面积的NiO薄膜的控制，通过烧结过程中，并优化其应用程序作为染料敏化光电阴极，导致在一个显着增加的光伏性能相比，早期的研究。研究了一系列不同的敏化剂和电解质在染料敏化NiO光电阴极中的应用。尽管其吸收范围有限，但染料香豆素343明显优于本研究中使用的其他敏化剂。在模拟太阳光（AM1.5，1000 W m−2）下，短路电流密度为2.13 mA cm−2，总能量转换效率为0.033%，是迄今为止文献报道的最高值。
To date, nickel(II) oxide (NiO) is one of the few p-type semiconductors that has successfully been used for the construction of dye-sensitized photocathodes as well as tandem dye-sensitized solar cells. In this study we present a novel fabrication method for the preparation of mesoporous NiO films based on preformed NiO nanopowders. Critical properties such as pore-size distribution, crystallinity, and internal surface area of the resulting NiO films were controlled through the sintering process and optimized for their application as dye-sensitized photocathodes, resulting in a significantly increased photovoltaic performance, compared to earlier studies. A series of different sensitizers and electrolytes was scrutinized for their application in dye-sensitized NiO photocathodes. Despite its limited absorption range the dye coumarin 343 clearly outperforms other sensitizers used in this study. Values for short-circuit current densities of 2.13 mA cm−2 and overall energy conversion efficiencies of 0.033% under simulated sunlight (AM1.5, 1000 W m−2) are the highest values reported in literature so far.