Applying Aniline for P-doping of PEDOT:PSS Films to Improve Their Conductivity and Efficiency of Perovskite Solar Cells

Poly(3,4- ethylenedioxythiophene):polystyrene sulfonate (PEDOT: PSS) is responsible for hole extraction efficiency and hole transport in the perovskite solar cell structure. The inclusion of PSS reduces the conductivity of the PEDOT films, which inhibits hole transport and results in a low photo current of the perovskite solar cell. In this work, an aniline solution was used as an additive in the PEDOT: PSS thin film to increase electrical conductivity. Two different methods were used to incorporate the additive: surface and volume treatment. The results show that the surface treatment with aniline solution can significantly increase the conductivity of PEDOT: PSS film. Moreover, the photoconversion efficiency of the perovskite solar cell with such a PEDOT: PSS layer is increased 1.5 times compared to the untreated one

Improving the Conductivity of the PEDOT:PSS Layers in Photovoltaic Cells Based on Organometallic Halide Perovskites

Among conductive polymers, PEDOT films find the widest application in electronics. For photovoltaic applications, studies of their optical properties, stability, and electrical conductivity are of greatest interest. However, the PEDOT:PSS transport layers, when used in photovoltaic cells, have a high electrical resistance, which prevents solar cells from increasing their efficiency. One of the promising ways to improve their electrical properties is the use of composite materials based on them, in which the conductivity can be increased by introducing various additives. In this work, conductive polymer films PEDOT:PSS (poly (3,4-ethylenedioxythiophene):polystyrene sulfonate acid) doped with a number of amines (Pentylamine, Octylamine, Diethylamine, Aniline with carbon nanotubes) were obtained and studied. It is shown that, depending on the concentration of dopants, the electrical conductivity of PEDOT:PSS films can be significantly improved. In this case, the light transmission of the films practically does not change. The process of improving the conductivity by treating the surface of the finished film with amines, followed by heat treatment, was studied. It is assumed that the improvement in conductivity is the result of the self-assembly of monolayers of organic molecules on the surface of the PEDOT:PSS film leading to its p-doping due to intermolecular interaction

Obtaining, properties and application of nanoscale films of anodic titanium dioxide on Ti-Al films for perovskite solar cells

The modes of synthesis of TiO2 films with semiconducting properties by the method of electrochemical oxidation of Ti are proposed for use as an electronic transport layer of perovskite solar cells. To anodize the titanium film, the electrolyte based on a mixture of a 2 % aqueous solution of oxalic acid and a 1 % aqueous solution of sulfamic acids was used. The results obtained showed that Al and Ni have injection contacts to the anodic TiO2 films. Nanoscale titanium oxide films have low resistivity and rectilinear and symmetric I - V characteristic branches. Annealing of titanium oxide films leads to a significant decrease in the resistivity

Characteristics of flat electric aluminum heaters with nanoporous anodic alumina and a resistive element of carbon fiber

In the study the results of the investigations of heat efficiency of the heater based on anodic alumina with carbon fiber resistive element are presented. The experimental results showed that the utilization of electric aluminum heaters allows to reduce electric power consumption and provide for more efficient operation of flat electric heaters

Effect of thermal treatment on the electrical and photovoltaic characteristics of methylammonium lead triiodide perovskite films

As a result of studies it was found that the most optimal treatment temperature of perovskite films based on CH 3 NH 3 PbI 3 is 110 °C. Films obtained at this temperature have a uniform morphology and relatively low resistivity

Improvement of the thermal characteristics of the electric heater in the architecture with aluminum, nanoporous alumina and resistive component of carbon fiber

The study presents the results from the investigations on electric characteristics and thermal field on the surface of the heater, based on anodic alumina with carbon fiber resistive element. It is shown that the application of heater made of aluminum, nanoporous alumina and carbon fiber allows decreasing the power consumption, providing the heating uniformity and, therefore, increasing their operating efficiency

Obtaining silver bactericidal layers on surface of porous matrixes from anodic alumina by chemical deposition

Silver films due to such properties as high electrical and thermal conductivity, high corrosion resistance and antibacterial properties are now widely used in biomedical technique and biotechnology. At present work was investigated the processes of chemical deposition of silver nanoparticles into a porous matrix of anodic aluminum oxide with nanosize pores. According to the results obtained, the process of chemical deposition of silver particles on porous anodic alumina with preliminary impregnation of Sn (II) ions was proposed. The extended surface of the obtained nanocomposite film provides high bactericidal effect and can be used for water disinfection

Utilization of circuit boards on aluminum with nanoporous anodic alumina and copper layer for power modules in switching power supplies

The paper presents the results of the studies on thermal efficiency of printed circuit board based on aluminum with nanoporous anodic alumina layer. It was showed that thermal efficiency of aluminum circuit board 0.6 thick with a layer of nanoporous anodic alumina 20 µm thick was close the thermal efficiency of aluminum oxide ceramic 0.6 thick. The example of use of an aluminum base with a layer of nanoporous anodic alumina for fabrication of the power module of switching power supply is described