QDs in photovoltaics
Photovoltaics are another interesting application. Here, the QDs can be complementary, helping extend the absorption range. Furthermore, perovskite QDs may hold potential but they are very immature and suffers from various instability issues (Note perovskite thin film PVs are the fastest improving PV technology ever and have now breached the 27% efficiency mark for champion cells). Novel PV technologies, such as perovskites, also enter a fiercely competitive landscape dominated by China and wafer-based Si PV technology.
In parallel, others are exploring the use of QDs (e.g., CnInSe) to enable luminescent solar concentrator in which the QDs absorb and reemit the light over transparent window surfaces. Other: QDs are of course already used in research particularly for imaging. Many other applications such as security applications are also being proposed.
We expect that as the technology matures new applications will inevitably be established.
About the author:
Dr Khasha Ghaffarzadeh is Research Director at IDTechEx - www.IDTechEx.com