‘Quantum dot’ solar cells

Researchers from University of Toronto (U of T) and King Abdullah University of Science and Technology (KAUST) have developed the most efficient Colloidal Quantum Dot (CQD) solar cell ever.

The cell has been built from inexpensive materials and it is certified at world-record 7.0 % efficiency.

What are quantum dots?

• Quantum dots are semiconductors with a size of few nanometers and can be used to yield electricity from the complete range of solar spectrum – including both visible and invisible wavelengths.

What is the difference b/w CQD and conventional semiconductors?

• Currently, the semiconductors are costly and their manufacturing takes time. CQD films, on the other hand, can be created quickly and at low cost, similar to paint or ink.