Researchers at the University of Toronto have set a new efficiency record for colloidal quantum dot solar cells
The record included both the highest electrical currents and the highest overall power conversion efficiency for CQD solar cells
This transmission Electron microscope image shows the spacing caused by organic molecules
The diagram shows how the use of inorganic ligands reduces the bulk of the CQD
Advancing solar technology is a trade-off between the efficiency of the cells themselves and the cost of producing and installing them. Quantum dot solar cells, which use nanoscale semiconductors to produce electricity, promise low-cost production and, because they can be sprayed or painted on, big benefits in terms of installation. In the efficiency stakes quantum cells don't score as well as silicon-based or CIGS solar cells, but a new efficiency record for colloidal quantum dot solar cells represents a big step towards narrowing the gap. This breakthrough isn't about the quantum dots though, it's about the wrapping.
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