1, Wanrun shares: the revenue in 2020 was 291.8000, an increase of1.67% compared with last year; The gross profit margin is 44.88%.
2. Jin Xinnuo: Revenue in 2020 19.6 1 billion, an increase of-26.76% compared with last year; Gross profit margin 15.74%. With perovskite solar cells and their preparation methods and other related cooperative patents.
3. Tuori Xinneng: The 2020 annual report shows that the company achieved revenue of 1338+0 billion. The research and development of perovskite technology involves many aspects, such as component selection and proportion, equipment and process preparation, material packaging, scene application, external circuit design and so on. At present, the project is progressing smoothly, the in-depth research and development of perovskite technology is still going on, and the research and development results are mass-produced.
4. Hangguo shares: The 2020 annual report shows that the company achieved revenue of 5.356 billion, an increase of 36.37% over last year; Gross profit margin is 23.34%. On June 30th, 2020, it was announced that Zhejiang Guo Xin, a wholly-owned subsidiary, planned to increase the capital of Zhongneng Optoelectronics. After the capital increase, Zhejiang Guo Xin is expected to hold 65,438+00% equity of Zhongneng Optoelectronics. The target company is mainly engaged in the research, development and production of thin-film photoelectric devices (perovskite /OPV) and related equipment.
5. Jingshan Light Machine: The 2020 annual report shows that the company achieved revenue of 3.06 billion, an increase of 35.54% over last year; Gross profit margin is 20.05%. For perovskite batteries, the company has mature supply capacity in transparent electrode layer and electron transport layer mass production equipment, and HJT perovskite laminated battery equipment is in the research and development stage.
1, perovskite refers to a ceramic oxide, and its molecular general formula is ABO 3；; This oxide is first discovered, and it is a calcium titanate (CaTiO3) compound existing in perovskite, hence the name "1 13 structure". In the form of cubic crystals. Cubic crystals often have stripes parallel to the crystal edges, which is the result of polycrystalline twins when high temperature variants are transformed into low temperature variants.
2. Pelovski is named after Russian geologist Lev Pelovski, and its structure usually includes simple perovskite structure, double perovskite structure and layered perovskite structure. The chemical general formula of simple perovskite compounds is, where X is usually a small radius or, the double perovskite structure has a general formula, and the layered perovskite structure is complex, and the layered calcium and titanium with general formula and superconducting properties are studied more. The most studied compound is perovskite-type compound, which consists of.
3. Perovskite compounds are mainly composed of orthorhombic, cubic, rhombic, tetragonal, monoclinic and triclinic systems. The A-site ions are usually rare earth or alkaline earth metal elements with large ion radius, and coordinate with 12 oxygen to form the densest cubic stack, which mainly plays a role in stabilizing perovskite structure. B site is generally an element with a smaller ionic radius (generally a transition metal element, such as Mn, Co, Fe, etc.). ), which coordinates with six oxygen atoms and occupies the octahedral center in cubic dense packing. Because of the variability of its valence state, it is usually the main component that determines many properties of perovskite materials. Compared with simple oxides, perovskite structure can make some elements exist in abnormal valence state, combine with non-stoichiometric oxygen, or make active metals exist in mixed valence, which makes solids show some special properties. Because the properties of solids are closely related to their catalytic activity, perovskite structure is widely used in catalysis because of its particularity.