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The efficiency of perovskite solar cells has reached 22.1%. The chemical formula of perovskite is ABX3. High efficiency perovskite materials are all compounds of MA / FA (A), Pb (B) and halogen elements (X). Doping with more complex cationic compounds is an important means to improve the properties of perovskite, and the main purpose of doping with other cations is to improve the stability of perovskite. However, most of the monovalent cations do not meet the perovskite tolerance factor t formula: t = rA + rI /(rPb + rI), the tolerance factor values need to be between 0.8 and 1.0, but most of ...
Release time: 2016 - 10 - 18
viewed:2327
Source: website of Nature magazineCarbon nanotubes (CNTs) have been widely used in seawater desalination because of their extraordinary water transport speed. However, the water transport mechanism behind CNTs has not been fully characterized, which reflects the difficulty of measuring the permeability of a single nanotube. Now, Lyd ric Bocquet and colleagues have shown (Nature 2916, 537, 210) that the permeability of a single nanotube can be accurately determined by observing the hydrodynamics of a water jet coming out of a single nanotube into the surrounding fluid. The measured results show...
Release time: 2016 - 10 - 07
viewed:2327
According to Tsinghua University Material College Network August 18, 2016, in graphene oxide (GO) layered films, oxygen-containing functional groups support the SP2 nanocapillary network, this unique structure has ultra-fast water transport characteristics and excellent selectivity for different solutes in water, in the field of filtration and separation has potential applications. It has been widely accepted that GO thin films can be used to screen solute molecules and ions larger than the critical size of interlayer nanocapillaries for nanofiltration and ultrafiltration. However, the use of ...
Release time: 2016 - 10 - 07
viewed:2327
[reprint] AAO template production show: http://mt.sohu.com/20160706/n458078789.shtmlAAO template (ultra thin AAO film)AAO holeThinner than plastic bag AAOBeautifully packaged AAO productsBeautifully packaged AAO template productshttp://www.topmembranes.com
Release time: 2016 - 09 - 29
viewed:2327
AAO templates and AAO materials have also emerged in the field of seawater desalination of new innovative applications, nanomaterials in the field of another scientific and technological innovation. Among TR35's best young technological innovators, AAO technology is among them. Here is a news from Nanjing University news network.According to the news network of Nanjing University, April 26, 2016, Professor Zhu Jia's research group of our school of modern engineering has made important progress in high-efficiency solar desalination. The related research results were published in the title of &q...
Release time: 2016 - 08 - 27
viewed:2327
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