Molecular Beam Epitaxy Preparation Of Antimony Chalcogenide Solar Cells

As a green and sustainable energy source,solar photovoltaic power generation has attracted wide attention,and the development of low-cost and high-efficiency photovoltaic materials and devices is an important idea to realize the wide application of solar energy.In recent years,the antimony based sulfur group solar cells with potential applications have made a breakthrough.The material is characterized by low toxicity,stability and low cost.This paper focuses on the preparation and interface control of antimony chalcogenide solar cells,which are elaborated from the following four aspects.The first part(chapter 1)firstly gives a brief introduction to the current situation of the development of solar photovoltaic,and then systematically introduces the principle,classification,structure and preparation method of solar photovoltaic cells.In the second part(chapter 2),the method of preparing antimony selenide solar cell by molecular beam epitaxy is introduced in detail.In order to avoid the decomposition of compounds during evaporation,molecular beam epitaxy was used to prepare compound films,and three methods of preparing antimony selenide films were proposed according to the properties of the materials.Based on the characterization of X-ray diffraction and scanning electron microscopy and so on,the optimum conditions for stratified thermal deposition were established.This study provides a reference for the preparation of high quality antimony chalcogenide films by molecular beam epitaxy.In the third part(chapter 3),the application of a novel hole transport material selenium dioxide in antimony chalcogenide solar cells is developed.At present,the organic hole transport materials commonly used in antimony chalcogenide solar cells not only reduce the stability of the cells,but also limit their commercial development in the future due to their high price.This study found that the device based on selenium dioxide has better stability than the traditional organic hole transport material.This study provides a new inorganic hole transport material for the development of low cost and high stability antimony chalcogenide solar cells.The fourth part(chapter 4)summarizes the main contents of this paper,summarizes the innovation of this paper,and finally prospects the development of this paper and related fields.