Improve quantum dot properties to increase solar cells

Steps to be taken by researchers at the Hebrew University of Jerusalem, to improve the properties of quantum dots to increase solar cells by doped semiconductor nanocrystal quantum dots. They managed to fix the old ways that lead to adverse effects due to heating at high temperatures. Quantum dots have been resistant to doping because of its small size causes the dirt will be removed.

The researchers used method for a simple room-temperature to dope quantum dots with metal impurities and make it able to control the band gap and Fermi energy, by changing the type and concentration of dopants. This is very helpful to learn a small number of dopants in nanocrystals.


Researchers using the method to make the n-doped and p-doped semiconductor nanocrystals that can increase the usefulness of materials in solar cells, thin-film transistors, and optoelectronic devices. This work might be developed into potential applications with nanocrystals, such as electronic, optical, and alternative energy solutions. Another advantage of doped nanocrystals, such as for the manufacture of new types of nanolasers, solar cells, sensors and transistors.

The researchers hope their discovery could help to make large-scale solar cells covering a wide range spectrum with a cheap and simple way.