Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
In various optoelectronic applications, like light-emitting diodes, photodetectors and photovoltaic cells, carbon nanotubes (CNTs) have been successfully used due to their outstanding electronic and mechanical properties. Special set of reaction conditions allow carbon nanotubes to self-assemble into vertically oriented cellular arrays during growth on a substrate. This special architecture of CNTs, the carbon nanotube forests, have come to the focus of research in nanoscale science, since the alignment offers many advantages from the viewpoint of the desired application. This study aims to show that vertically aligned CNTs can be used as efficient hole or electron selective electrode contact materials for future perovskite based optoelectronic devices. As an example, we examined the electronic properties of the interfaces composed of millimeter long vertically aligned carbon nanotube forest and methylammonium lead halide and mixed halides CH3NH3PbX3 (X = Cl, Br, I) perovskites. The photovoltaic perovskites have been synthesized in various shapes and forms; millimeter large single crystals and elongated nanowires. Photosensitive interfaces were prepared by bringing the perovskites and carbon nanotubes in contact by wet chemical deposition or by a “solvent-free dry pressing” method. The I-V characteristics of the devices have been determined in the dark and under visible light, UV and X-ray illumination. We found that vertically aligned carbon nanotubes serve as a versatile platform for future selective electrode development.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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