Optimizing Colloidal Quantum Dot Synthesis Conditions for Tandem CQD Solar Cells
- Program: Electrical and Computer Engineering
- Course: EN.520.498 ECE Senior Design
Project Description:
Tandem solar cells are of interest as a route to improve efficiencies beyond the limitations of current single junction cells (such as silicon solar cells). Fabricating a tandem solar cell requires introducing a new semiconductor material with a different bandgap, which will absorb a different portion of the sun’s spectrum. In this poster, we synthesize lead sulfide colloidal quantum dots (PbS CQDs) of different bandgaps and explore their applications in tandem solar cells.
Project Photo:
Figure illustrating the typical PbS CQD tandem solar cell structure (a) and the size-dependent bandgap tunability (and therefore absorption) of PbS CQDs (b).
