Effect of NiOx thin layer fabricated by oxygen-plasma treatment on polymer photovoltaic cell
Effect of NiOx thin layer fabricated by oxygen-plasma treatment on polymer photovoltaic cell
复制标题
DOI：
10.1016/j.solmat.2010.04.077
复制
发表时间：
2010-10
影响因子：
6.9
通讯作者：
Zhen Wang;Su-Hwan Lee;D. Kim;Ji-heon Kim;Jea‐Gun Park
中科院分区：
文献类型：
--
作者：
Zhen Wang;Su-Hwan Lee;D. Kim;Ji-heon Kim;Jea‐Gun Park
研究了以聚（3-己基噻吩-2，5-二基）（P3 HT）和[6，6]-苯基-C61-丁酸甲酯（PCBM）为异质结，以NiOx为阳极的聚合物光伏电池的性能。具有各种厚度的NiO层（即，在200 W和100 sccm下对蒸发的金属Ni层进行氧等离子体处理200 s，制备了无层（0.5、1、2和5 nm）。聚合物PV电池的功率转换效率（PCE）表现出与短路电流密度（Jsc）和填充因子（FF）相似的趋势，但对于各种NiOx厚度，与开路电压（Voc）不同。这种趋势与聚合物PV电池的光吸收和串联电阻取决于NiO层的厚度的事实相关联。与没有NiOx层的电池相比，具有优化的1 nm厚的NiOx层的电池的PCE提高了68.5%。结合俄歇电子能谱（AES）和X射线光电子能谱（XPS）等分析技术，对制备的NiOx薄膜进行了详细的研究。ITO阳极和活性层之间的NiO层强烈影响聚合物PV电池的PCE，这是由空穴注入和电子阻挡特性解释的。
The performance of polymer photovoltaic (PV) cells based on poly(3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl-C61 butyric-acid methyl-ester (PCBM) bulk heterojunctions with an NiOxanode buffer layer was investigated. NiOxlayers with various thicknesses (i.e., without a layer, 0.5, 1, 2, and 5nm), were fabricated by oxygen plasma treatment on an evaporated metallic Ni layer under 200W and 100sccm for 200s. The power conversion efficiency (PCE) of the polymer PV cell exhibited a similar trend to the short-circuit current density (Jsc) and fill factor (FF) but not to open circuit voltage (Voc) for various NiOxthicknesses. This tendency is associated with the fact that the light absorption and series resistance of the polymer PV cell depends on the thickness of the NiOxlayer. The PCE of the cell with the optimized 1-nm-thick NiOxlayer was improved by 68.5% compared to that of the cell without an NiOxlayer. With a combination of different techniques of analysis, such as Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS), the fabricated NiOxlayer was studied in detail. The NiOxlayer between the ITO anode and active layer strongly influenced the PCE of polymer PV cells, which was accounted for by hole-injection and electron-blocking properties.