Better Solar Cells Performance with the Help of Magnetic Nanoparticles


Published Date : Feb 26, 2015

As per observations, magnetic nanoparticles possess the capacity to enhance solar cells’ performances that are made of polymers; however that depends on the right mix. By weight, if even a percent worth of such a nanoparticle is added to the solar cells makes it way more efficient. These conclusions were made by a group of scientists led by a professor from Technical University of Munich. A rather promising technique is addition of nanoparticles. 

It has been observed that gold nanoparticles tend to absorb extra sunlight that helps in the creation of some more carriers of electrical charge when the gold particles release energy. According to the research team, the light so created helps in further creating charge carriers pairs within the solar cells which consist of electrons that are negatively charged and also a hole that is positively charged. This area of the hole is the site which doesn’t consist of even a single electron. 

The main crux while developing organic solar cells is the separation of the pair of electron hole prior to their recombination. The charge would get lost if at all they did. The scientists and researchers look for ways in which the electron hole pair’s life can be prolonged. This will enable the separation of more of these and channelize these to the opposite electrodes. The principle that this strategy uses is that of quantum physics that states: electrons consist of a certain internal rotation that is called spin. As per the quantum physics laws the value of the spin is 1/2. 

The addition of nanoparticles is basically a routine technique that can be conducted easily while carrying out the several techniques that are used for producing solar cells that are organic in nature.