Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6536382 | Solar Energy Materials and Solar Cells | 2013 | 7 Pages |
Abstract
Here we report on heterojunction PbS quantum dot (QD) solar cells using RF magnetron sputtered CdS as the n-type window layer. These solar cells generate large open circuit voltage compared to previously reported PbS-QD solar cells. Our investigations of this device design show an optimized CdS film thickness of 70Â nm and an optimized PbS QD diameter of â¼2.7Â nm, corresponding to a bandgap energy of â¼1.57Â eV. Under simulated AM1.5Â G illumination, we attain short circuit current as high as 12Â mA-cmâ2, an open circuit voltage of 0.65Â V and efficiency as high as 3.3%.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Khagendra P. Bhandari, Paul J. Roland, Hasitha Mahabaduge, Neale O. Haugen, Corey R. Grice, Sohee Jeong, Tieneke Dykstra, Jianbo Gao, Randy J. Ellingson,