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Overcoming the Limitations of Sputtered Nickel Oxide for High‐Efficiency and Large‐Area Perovskite Solar Cells
Advanced Science ( IF 15.1 ) Pub Date : 2017-10-26 , DOI: 10.1002/advs.201700463
Guijun Li 1 , Yibin Jiang 2 , Sunbin Deng 2 , Alwin Tam 2 , Ping Xu 1 , Man Wong 2 , Hoi-Sing Kwok 2
Affiliation  

Perovskite solar cells (PSCs) are one of the promising photovoltaic technologies for solar electricity generation. NiOx is an inorganic p‐type semiconductor widely used to address the stability issue of PSCs. Although high efficiency is obtained for the devices employing NiOx as the hole transport layer, the fabrication methods have yet to be demonstrated for industrially relevant manufacturing of large‐area and high‐performance devices. Here, it is shown that these requirements can be satisfied by using the magnetron sputtering, which is well established in the industry. The limitations of low fill factor and short‐circuit current commonly observed in sputtered NiOx‐derived PSCs can be overcome through magnesium doping and low oxygen partial pressure deposition. The fabricated PSCs show a high power conversion efficiency of up to 18.5%, along with negligible hysteresis, improved ambient stability, and high reproducibility. In addition, good uniformity is also demonstrated over an area of 100 cm2. The simple and well‐established approach constitutes a reliable and scale method paving the way for the commercialization of PSCs.

中文翻译:

克服溅射氧化镍用于高效大面积钙钛矿太阳能电池的局限性

钙钛矿太阳能电池(PSC)是用于太阳能发电的有前途的光伏技术之一。NiO x是一种无机 p 型半导体,广泛用于解决 PSC 的稳定性问题。尽管采用NiO x作为空穴传输层的器件获得了高效率,但其制造方法尚未证实可用于工业相关的大面积和高性能器件的制造。这里表明,使用业界成熟的磁控溅射可以满足这些要求。溅射 NiO x衍生 PSC中常见的低填充因子和短路电流的局限性可以通过镁掺杂和低氧分压沉积来克服。所制造的 PSC 显示出高达 18.5% 的高功率转换效率,以及可忽略不计的磁滞、改进的环境稳定性和高再现性。另外,在100cm 2的面积上也表现出良好的均匀性。这种简单且行之有效的方法构成了一种可靠且可规模化的方法,为 PSC 的商业化铺平了道路。
更新日期:2017-10-26
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