Abstract
In this paper, we investigated different TiO2 nanoporous layers on the performance of perovskite solar cells. The structure and morphology of TiO2 nanoporous layers were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. It indicates that the order of crystalline rutile TiO2 nanorod porous layers is better than that of anatase TiO2 nanotubes and anatase TiO2 nanoflowers. The optical reflectance properties of FTO/TiO2 nanoporous layers and the optical absorption properties of the FTO/TiO2 nanoporous layers/CH3NH3PbI3 structure were analyzed by ultraviolet visible absorption spectroscopy. The performance of perovskite solar cells with different TiO2 nanoporous layers was tested by using a current-voltage curve.
Highlights
Solar energy is a new type of energy for sustainable development
The TiO2 compact layer (CL) was deposited by magnetronsputtering (MS) onto the fluorine-doped SnO2 transparent conductive glass (FTO) with an area of 2 cm × 2 cm, of which the thickness is 1 μm and the light transmittance is more than 80%
The TiO2 CL was coated on the FTO by radio frequency (RF) MS from a TiO2 target (99.9% purity)
Summary
Solar energy is a new type of energy for sustainable development. The most promising way to develop solar energy is by solar cells. Because of the simple process and the efficiency despite rapid growth, perovskite solar cells (PSCs) as a third generation of solar cells have become a hot spot in solar cell research. The focus of solar cell research is to improve photoelectric conversion efficiency (η). Titanium dioxide (TiO2), the most popular electron transport layer, has undergone many research efforts, such as improving its nanostructure and interfacial properties.. The effect of different TiO2 nanoporous layers on the performance of PSCs has not been studied deeply. Different TiO2 nanoporous layers, including nanorods, nanotubes, and nanoflowers, were prepared by a one-step hydrothermal method, and the effect on the performance improvement of PSCs was studied
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