جستجوی مقالات مرتبط با کلیدواژه « سلول های خورشیدی حساس شده با مواد رنگزا » در نشریات گروه « مهندسی شیمی، نفت و پلیمر »

Due to limited fossil energy reserves and increasing energy consumption in the world, it is no longer possible to rely on existing energy sources. Therefore, the world's developed countries are looking for alternative sources to generate electricity. For this purpose, solar energy has been considered due to its advantages. Solar cells are produced in different ways in different generations. One of the essential parameters of solar cells is efficiency, cost, and stability. Third Generation Solar Cells (Dye-Sensitized Solar Cells) are replacing the first and second generations with lower production costs and more accessible production methods. The problem with these cells is that they are less efficient and more stable than previous generations of solar cells. An important part of these cells is the photodiode, whose main task is to absorb light and collect the electrons produced. One of the most critical materials used as a photodiode is TiO2. The photodiode properties of TiO2 must be optimized to increase the efficiency of solar cells. One way to optimize the behavior of TiO2 is to use doping in its structure. Various materials are added to the structure of TiO2 as a dopant. In this review article, the behavior of TiO2 doped with metals is investigated.

Nowadays, fossil fuels, which are limited sources, are used to produce energy. According to energy consumption and its growing trend, it is necessary to introduce new sources of energy production. As a renewable, eco-friendly and abundant energy source, the sun has attracted the attention of the world. Solar energy is directly converted into electric energy with the help of photovoltaic devices. Dye-sensitized solar cells deliver a cheaper and dependable alternative for numerous photovoltaic devices such as mineral, thin-film, and hybrid solar cells. The performance of dye-sensitized solar cells depended on photosensitizer (Dye), electrolyte, and the semiconductor. Organometallic complex dyes are an important group of photosensitizer compounds that are suitable for use in the solar cell structure. These compounds illustrate an excellent performance in DSSCs, and an efficiency of about 17% was reported. The most important metal used in the synthesis of these compounds is ruthenium, which has shown the best efficiency. This article provides an overview of the types of organic-mineral complexes as sensitizers (dyes) in dye-sensitized solar cells.

The energy demand is ever increasing to fulfill the energy requirement in this century. High energy supply is required especially in the developing countries to sustain the lifestyle due to the growth in the world's population and techno-economic city. In fact, the sources of fossil fuel based energy are limited and the use of fossil fuels can lead to the environmental pollution problem. It results in an efficient photoanode which further leads to the improvement in DSSC. The DSSCs performance is further enhanced using engineered nano-composite photoanode. The present study reviews the nano-composite based on TiO2</sub> for dye-sensitized solar cells. Nano-composite based on titanium dioxide used in dye-sensitized solar cells include TiO2</sub>/ZnO, TiO2</sub>/grapheme, TiO2</sub>/carbon and TiO2</sub>/ noble metal. Thus they result in rapid electron transfer rate, slower charge recombination rate and higher surface area.