Direct Growth of Vertically Aligned Carbon Nanotubes onto Transparent Conductive Oxide Glass for Enhanced Charge Extraction in Perovskite Solar Cells,Advanced Materials Interfaces

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Direct Growth of Vertically Aligned Carbon Nanotubes onto Transparent Conductive Oxide Glass for Enhanced Charge Extraction in Perovskite Solar Cells
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-09-09 , DOI: 10.1002/admi.202001121
Victoria Ferguson ₁ , Bowei Li ₁ , Mehmet O. Tas ₁ , Thomas Webb ₁ , Muhammad T. Sajjad ₂ , Stuart A. J. Thomson ₃ , Zhiheng Wu ₄ , Yonglong Shen ₄ , Guosheng Shao ₄ , José V. Anguita ₁ , S. Ravi P. Silva ₁ , Wei Zhang ₁

Affiliation

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 °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%.

中文翻译：

将垂直排列的碳纳米管直接生长到透明导电氧化物玻璃上，以增强钙钛矿太阳能电池中的电荷提取。

垂直排列的碳纳米管（VACNT）由于其预定的取向和沿管长度的出色传输能力，为纳米电子学提供了令人兴奋的途径，并且有可能在各种光电应用中使用。但是，使用常规化学气相沉积（CVD）方法生长VACNTs需要升高温度（> 720°C），因此，常用的透明导电氧化物（TCO）玻璃的适用性，例如掺氟氧化锡（FTO）和铟锡氧化物（ITO）作为纳米管生长的基材受到其温度敏感性的限制。在这里，已经报道了使用光热化学气相沉积（PTCVD）生长方法将多壁VACNT直接成功生长到常用的TCO玻璃，FTO和ITO上。研究了TCO基板在红外区域内反射的好处以及表面粗糙度对VACNTs生长的影响。研究了VACNTs在ITO上在倒置平面钙钛矿太阳能电池中的应用，显示出优异的电荷转移，钙钛矿薄膜中较大的晶粒尺寸以及接近16％的最佳器件效率。

更新日期：2020-11-06

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