Alzahly Shaykha, Yu LePing, Shearer Cameron J, Gibson Christopher T, Shapter Joseph G
Flinders Centre for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, Adelaide, SA 5042, Australia.
Department of Chemistry, The University of Adelaide, Adelaide, SA 5005, Australia.
Materials (Basel). 2018 Apr 21;11(4):639. doi: 10.3390/ma11040639.
Molybdenum disulphide (MoS₂) is one of the most studied and widely applied nanomaterials from the layered transition-metal dichalcogenides (TMDs) semiconductor family. MoS₂ has a large carrier diffusion length and a high carrier mobility. Combining a layered structure of single-wall carbon nanotube (SWCNT) and MoS₂ with n-type silicon (n-Si) provided novel SWCNT/n-Si photovoltaic devices. The solar cell has a layered structure with Si covered first by a thin layer of MoS₂ flakes and then a SWCNT film. The films were examined using scanning electron microscopy, atomic force microscopy and Raman spectroscopy. The MoS₂ flake thickness ranged from 5 to 90 nm while the nanosheet’s lateral dimensions size ranged up to 1 μm². This insertion of MoS₂ improved the photoconversion efficiency (PCE) of the SWCNT/n-Si solar cells by approximately a factor of 2.
二硫化钼（MoS₂）是层状过渡金属二硫属化物（TMDs）半导体家族中研究最多、应用最广泛的纳米材料之一。MoS₂具有较大的载流子扩散长度和较高的载流子迁移率。将单壁碳纳米管（SWCNT）和MoS₂的层状结构与n型硅（n-Si）相结合，制备了新型的SWCNT/n-Si光电器件。该太阳能电池具有层状结构，其中Si首先被一层薄薄的MoS₂薄片覆盖，然后是一层SWCNT薄膜。使用扫描电子显微镜、原子力显微镜和拉曼光谱对这些薄膜进行了检测。MoS₂薄片的厚度范围为5至90nm，而纳米片的横向尺寸大小范围可达1μm²。MoS₂的这种插入使SWCNT/n-Si太阳能电池的光电转换效率（PCE）提高了约2倍。
