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首页> 外文期刊>Optical and quantum electronics >Comparison of self-assembled monolayers with long alkyl chains on ITO for enhanced surface properties and photovoltaic performance
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Comparison of self-assembled monolayers with long alkyl chains on ITO for enhanced surface properties and photovoltaic performance

机译：伊藤增强表面性能和光伏性能的长烷基链的自组装单层对自组装单层的比较

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摘要

Self-assembled monolayers (SAMs) are used as interfacial layer up to a few nanometer thick in electronic devices to tune the morphological and charge transport properties. Herein, we studied indium titanium oxide (ITO) treatment by two different SAMs molecules involving long alkyl chains with boronic acid (BA) and phosphonic acid anchoring groups to improve the performance of organic solar cells (OSC_S). It was determined that the wettability of ITO increased due to the improved surface energy after SAM treatment, which led to enhanced morphology of upper layer. The champion device treated with C_(14)-BA SAM showed a power conversion efficiency (PCE) of 3.3%, which is higher than that of non-treated device (2.9%). The C_(14)-BA SAM treated ITO showed a better morphology and its device shows the highest performance, thanks to improved short circuit current (J_(sc)) from 7.8 mA cm~(-2) (for non-treated device) to 8.8 mA cm~(-2). It was concluded that the work function change and upper layer morphology can be easily controlled by treatment of the ITO surface by SAMs with different anchoring groups. This study provides an easy and alternative approach to enhance the surface properties of metal oxides for improving the performances of OSCs.
机译：自组装的单层（SAMS）用作高达几纳米电子设备厚的界面层，以调整形态和电荷运输性能。在此，我们通过两种不同的SAMS分子研究了涉及长长烷基链的氧化钛（ITO）处理与硼酸（BA）和膦酸锚定组进行长烷基链，以改善有机太阳能电池（OSC_S）的性能。确定ITO的润湿性由于SAM处理后的表面能改善而增加，这导致上层的形态增强。用C_（14）-BA SAM处理的冠军装置显示出3.3％的功率转换效率（PCE），其高于未处理的装置（2.9％）。 C_（14）-BA SAM处理的ITO显示出更好的形态，其装置表示从7.8 mA cm〜（-2）的改进的短路电流（J_（SC））改进的短路电流（J_（SC））（用于未处理的设备）到8.8 ma cm〜（-2）。得出结论是，通过用不同的锚定组的SAM处理ITO表面可以容易地控制功函数变化和上层形态。该研究提供了一种简单又一替代的方法来增强金属氧化物的表面性质以改善OSC的性能。

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