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Laminated carbon nanotube networks for metal electrode-free efficient perovskite solar cells

Publisher : ACS Nano

Source : ACS nano Volume 8 Issue 7 Pages 6797-6804, 2014

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Campus : Coimbatore

Center : Center for Industrial Research and Innovation (ACIRI)

Year : 2014

Abstract : 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.

Cite this Research Publication : Laminated Carbon Nanotube Networks for Metal Electrode-Free Efficient Perovskite Solar Cells
Zhen Li, Sneha A. Kulkarni, Pablo P. Boix, Enzheng Shi, Anyuan Cao, Kunwu Fu, Sudip K. Batabyal, Jun Zhang, Qihua Xiong, Lydia Helena Wong, Nripan Mathews, and Subodh G. Mhaisalkar
ACS Nano 2014 8 (7), 6797-6804
DOI: 10.1021/nn501096h

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