New thin film solar cells may be mass-produced, science published innovative research results in China
CCTV News March 27 news, new thin film solar cells toward mass production further. The international academic journal Science published the research results of the academician Huang Wei’s team of Northwest University of technology on the 26th online, namely, stabilizing black phase formamidinium perovskite formation at room temperature and high humidity, Perovskite photovoltaic materials were prepared by using a multifunctional ionic liquid as a solvent instead of traditional toxic organic solvents. It not only has high stability and simple preparation process, but also improves the photoelectric conversion rate, solves the problem of stability in the traditional preparation process, realizes a major breakthrough in the photovoltaic field, and creates a prerequisite for the large-scale production and utilization of perovskite solar cells.
Perovskite is a new material for solar power generation. Compared with the silicon crystal used in traditional solar panels, perovskite is not only lighter and more variable, but also cheaper and more environmentally friendly. It will have a disruptive change in the scope of application. Therefore, the research of perovskite photovoltaic materials has become a “hot spot” pursued by scientists all over the world. However, there are many “pain points” in the research of perovskite photovoltaic materials. For example, perovskite photovoltaic materials, such as formamidine perovskite, are very “sensitive” and prone to phase transition in the air, which greatly restricts their mass production.
Academician Huang Wei’s team, through original innovation, developed a new type of “ionic liquid” as solvent, which solved the problems of unstable materials, complex process preparation and high pollution.
“The ionic liquid is like a shepherd dog on the grassland. It plays the role of giving orders and arranging troops in the molecular composition of” sheep “, that is, perovskite. After it stabilizes the formation, it quits silently. This new formation is the stability of perovskite cells that we want to get Chao Lingfeng, the first author of the achievement and a doctoral student of Northwestern Polytechnic University, explained vividly.
“In the future, traditional batteries will no longer be needed in the hinterland of the desert, the external walls of buildings, mobile phones, etc., and only a cheaper, cleaner, paper-thin perovskite solar cell will be needed. At the same time, it can also be used in flexible wearable, spacecraft carrying and other important fields. ” Chao Lingfeng is full of confidence in the application prospect of perovskite photovoltaic materials.