Direct Growth of Vertically Aligned Carbon Nanotubes onto Transparent Conductive Oxide Glass for Enhanced Charge Extraction in Perovskite Solar Cells
Direct Growth of Vertically Aligned Carbon Nanotubes onto Transparent Conductive Oxide Glass for Enhanced Charge Extraction in Perovskite Solar Cells
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DOI：
10.1002/admi.202001121
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发表时间：
2020-09-09
影响因子：
5.4
通讯作者：
Zhang, Wei
中科院分区：
文献类型：
--
作者：
Ferguson, Victoria;Li, Bowei;Zhang, Wei
垂直排列的碳纳米管（VACNTs）由于其预定的取向和沿管长度沿着的特殊传输能力而为纳米电子学提供了令人兴奋的途径，具有在各种光电应用中使用的潜力。然而，使用常规化学气相沉积（CVD）方法生长VACNT需要升高的温度（>720 ℃），因此，常用的透明导电氧化物（TCO）玻璃（例如氟掺杂的氧化锡（FTO）和氧化铟锡（ITO））作为纳米管生长基板的适用性受到其温度敏感性的限制。在这里，成功的多壁VACNTs直接生长到常用的TCO玻璃，FTO和ITO，使用光热化学气相沉积（PTCVD）生长方法的报告。的反射的好处，在红外区域内，的TCO基板和表面粗糙度对VACNTs的生长的影响进行了研究。研究了ITO上VACNTs在倒置平面钙钛矿太阳能电池中的应用，结果表明，VACNTs具有上级电荷转移能力，钙钛矿薄膜晶粒尺寸较大，器件效率接近16%。
Vertically aligned carbon nanotubes (VACNTs) present an exciting avenue for nanoelectronics due to their predetermined orientation and exceptional transport capabilities along the tube length, with the potential to be employed in a variety of optoelectronic applications. However, growth of VACNTs using conventional chemical vapor deposition (CVD) methods requires elevated temperatures (>720 degrees C) and therefore, the suitability of commonly used transparent conductive oxide (TCO) glasses, such as fluorine-doped tin oxide (FTO) and indium-tin oxide (ITO), as the substrates for nanotube growth are limited by their temperature-sensitive nature. Here, the successful growth of multi-walled VACNTs directly onto commonly used TCO glasses, FTO and ITO, using the photo-thermal chemical vapor deposition (PTCVD) growth method is reported. The benefit of reflection, within the infrared region, of the TCO substrate and the effect of surface roughness on the growth of VACNTs is investigated. The application of VACNTs on ITO in inverted planar perovskite solar cells is investigated, which shows superior charge transfer, larger grain sizes in the perovskite film, and a champion device efficiency approaching 16%.