TOWARD NANOSTRUCTURED PEROVSKITE SOLAR CELLS BASED ON NANOPOROUS ANODIC ALUMINA TECHNOLOGY

Identifier:  TDX:3368

Handle: https://hdl.handle.net/20.500.11797/TDX3368

Authors:  Montero Rama, María Del Pilar

Abstract:
In this thesis, the nanostructured perovskite solar cell manufacture using nanoporous anodic alumina (NAA) as a scaffold is proposed. The perovskite was chosen since the solar cells made with this material have achieved very similar efficiency to silicon cells. Also, they are cheap and easy to prepare. The fact that the cell will be nanostructured will provide stability against radiation, temperature and humidity, this being the main problem of these devices. The NAA nanopores have a very well defined cylindrical shape, whose size can be easily controlled, all nanopores being ident, which will allow greater control over the homogeneity of the infiltrated material. Therefore, this thesis aims to apply NAA technology to perovskite solar cells (PSCs). First, the familiarization process with the manufacture and characterization of NAA, as well as of high-efficiency PSCs, through known standard methods were carried out. Once the manufacture of NAA with different pore sizes was achieved, the alumina barrier layer that exists between the aluminium and the bottom of the nanopores had to be removed, to take advantage of the aluminium (base of the NAA) as an electrical contact. For which a new method was investigated and developed since existing methods are not suitable for removing barrier layer thicknesses greater than 200 nm. Finally, the infiltration of the materials that form a PSC within the nanopores was studied, utilizing simple deposition methods. A full working nanostructured perovskite solar cell was obtained using NAA as a scaffold, whose efficiency results are modest because the structure proposed in this work is novel. Which opens a wide path for future work.