Martin green: 'father' of solar photovoltaic materials perovskite faces two big problems

“ Therefore, when the dumping perovskite materials need to be special treatment, so as to prevent its materials containing lead leaking into the surrounding environment. On April 26, the Yangtze river three gorges corp. 's capital joint of China's three gorges three gorges new energy and fiber, optoelectronic technology co. , LTD. Hangzhou, announced that the three gorges capital as a strategic investor capital fiber photoelectric, investment value of 50 million yuan. About solar products if not properly solve the problem of toxic, perovskite battery is still difficult to into the commercial market. “ So much devoted to decode the perovskite stability and toxicity of the problem, many manufacturers to the market to ensure the service life of 25 years to 30 years, however, unstable components can't adapt to the market and the investment demand. In addition, many manufacturers do not want the use of toxic materials in the component, the development of solar photovoltaic industry is very fast, can you install photovoltaic toxic material on a sun room of large scale will bring problems to the development of industry of the future. Although perovskite materials currently facing insufficient stability, has a certain toxicity, widespread application of short board, but said professor green, superposition of perovskite materials can improve efficiency on silicon wafer, at this level is a near perfect technique. Solar wafers but currently in use do not contain lead or fluorine materials are possible. Professor green said, and contains a small amount of lead in battery connection of metal materials, in addition in some plastic components on the backplane will have fluorine, the fluorine relatively stable, not easy to be broken down. It is understood that the standard silicon crystal contains two kinds of toxic substances, lead, and fluorine.

　　“ Will some of the metal, nonmetal material with a certain proportion of combination, also can produce different semiconductor materials, we are studying some consists of metal, non-metallic materials, and we have a similar performance and silicon material. ” On September 4, university of new south wales in Sydney, 悉尼新南威尔士大学) And strategic consulting institute of science and technology, Chinese Academy of Sciences, China ( CASISD） And the natural scientific research ( 自然的研究) Jointly organized the second best Australian science conference held in Beijing in the future. ” Professor green told reporters that & other; Perovskite materials containing heavy metals such as lead, because it is soluble in water, it is easy to spread to the surrounding environment, and personal damage to the environment. According to professor green, its advantage is that the first is no toxicity, the second material is rich, also more reserves. The less than 4 years, company, solar silicon wafer is the world's perovskite solar photoelectric conversion efficiency of the world record holder. “ Perovskite technology belongs to the third generation of photovoltaic technology, now actually has attracted the attention of academia and industry, but it faces two major problems: instability and toxicity. At present this kind of material of conversion efficiency at the university of new south wales in Sydney set a world record, is about 11%, hope that the future will increase the efficiency to 20%, in order to realize commercial application. One of which contains copper, zinc, tin, and sulfur four kinds of material, through them to the appropriate proportion of mixture, can produce a good semiconductor products. ” Martin & middot; Professor green form a team of researchers at the university of new south wales in Sydney, is the largest in the field of photovoltaic research, about the international solar energy product research team's most prominent universities, silicon wafer trimming to and has become the main business the PERC batteries of the battery. ” On March 15, China's first big fan manufacturer goldwind announced that as a strategic investor led Britain perovskite Oxford photovoltaic solar power company co. , LTD. ( 牛津PVTM) D rounds of financing, the investment value of 21 million pounds. The sidelines, to is known as the silicon wafer trimming & other; The father of solar & throughout; Martin & middot; Professor green around the development status quo of perovskite photovoltaic materials accepted reporter's interview. ” It is understood that perovskite materials used light for the first time in 2009 v power generation, because of their excellent optical and electrical properties, and easy to synthesis, the advantages of the low cost, abundant raw materials, has inspired the world in the field of scientific research enthusiasm.