Nanostructure of organic solar cell materials revealed
Using a soft X-ray microscope, a Japanese research team has examined the nanostructure of organic solar cells and discovered that different molecules are intermixed in each molecular domain.
This discovery is expected to reveal the energy conversion mechanism in organic solar cells and thereby facilitate the establishment of guidelines to design high efficiency organic solar cells.
Bulk heterojunction organic solar cells are characterized by their high energy conversion efficiency. In order to improve the efficiency of cells, it had been thought to be important up until now to have a clean interface between a polymer material and a single molecular domain of a fullerene.
However, when the researchers carefully examined the domain structure of cell materials that were optimized for energy conversion efficiency using a new methodology involving a soft X-ray microscope, they found that different molecules were intermixed in each molecular domain.
In other words, they found that cells with a “dirty” interface have superior performance to those with a “clean” interface. This new discovery defies the common understanding of the energy conversion mechanism.
These results were published on April 16, 2014 in the online version of Applied Physics Express, a journal issued by the Japan Society of Applied Physics.
Mikiko Tanifuji | Research SEA News
World’s Highest Magnetic Field* (1,020MHz) NMR developed
03.07.2015 | National Institute for Materials Science
Diamond provides technical progress
03.07.2015 | Julius-Maximilians-Universität Würzburg
Wind turbines could be installed under some of the biggest bridges on the road network to produce electricity. So it is confirmed by calculations carried out by a European researchers team, that have taken a viaduct in the Canary Islands as a reference. This concept could be applied in heavily built-up territories or natural areas with new constructions limitations.
The Juncal Viaduct, in Gran Canaria, has served as a reference for Spanish and British researchers to verify that the wind blowing between the pillars on this...
New technique combines electron microscopy and synchrotron X-rays to track chemical reactions under real operating conditions
A new technique pioneered at the U.S. Department of Energy's Brookhaven National Laboratory reveals atomic-scale changes during catalytic reactions in real...
Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and a half billion years ago.
Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and...
A team of scientists including PhD student Friedrich Schuler from the Laboratory of MEMS Applications at the Department of Microsystems Engineering (IMTEK) of...
The three-year clinical trial results of the retinal implant popularly known as the "bionic eye," have proven the long-term efficacy, safety and reliability of...
25.06.2015 | Event News
16.06.2015 | Event News
11.06.2015 | Event News
03.07.2015 | Press release
03.07.2015 | Agricultural and Forestry Science
03.07.2015 | Health and Medicine