Energy Research Institute at NTU (ERI@N), Nanyang Technological University , Techno Plaza, 50 Nanyang Drive, 637553, Singapore.
ACS Nano. 2014 Jul 22;8(7):6797-804. doi: 10.1021/nn501096h. Epub 2014 Jul 1.
Organic-inorganic metal halide perovskite solar cells were fabricated by laminating films of a carbon nanotube (CNT) network onto a CH3NH3PbI3 substrate as a hole collector, bypassing the energy-consuming vacuum process of metal deposition. In the absence of an organic hole-transporting material and metal contact, CH3NH3PbI3 and CNTs formed a solar cell with an efficiency of up to 6.87%. The CH3NH3PbI3/CNTs solar cells were semitransparent and showed photovoltaic output with dual side illuminations due to the transparency of the CNT electrode. Adding spiro-OMeTAD to the CNT network forms a composite electrode that improved the efficiency to 9.90% due to the enhanced hole extraction and reduced recombination in solar cells. The interfacial charge transfer and transport in solar cells were investigated through photoluminescence and impedance measurements. The flexible and transparent CNT network film shows great potential for realizing flexible and semitransparent perovskite solar cells.
通过将碳纳米管（CNT）网络薄膜层压到 CH3NH3PbI3 基底上作为空穴收集器，制造了有机-无机金属卤化物钙钛矿太阳能电池，从而绕过了金属沉积的耗能真空工艺。在没有有机空穴传输材料和金属接触的情况下，CH3NH3PbI3 和 CNTs 形成了效率高达 6.87%的太阳能电池。由于 CNT 电极的透明性，CH3NH3PbI3/CNTs 太阳能电池具有半透明性，并具有双面光照的光伏输出。在 CNT 网络中添加 spiro-OMeTAD 形成复合电极，由于太阳能电池中空穴提取的增强和复合的减少，效率提高到 9.90%。通过光致发光和阻抗测量研究了太阳能电池中的界面电荷转移和传输。柔性透明的 CNT 网络薄膜在实现柔性半透明钙钛矿太阳能电池方面具有巨大潜力。
