Abstract
We report on a detailed analysis of the temperature dependent electrical properties of In0.5 Ga0.5 As/GaAs quantum dot solar cells. The effects leading to a reduction in the open circuit voltage are found to be the thermal injection of carriers from the n and p-type layers into the depletion region where they recombine with carriers occupying quantum dot states due to a thermal distribution. The departure of the device studied here from an ideal intermediate band solar cell is discussed.
Original language | English |
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Article number | 123505 |
Journal | Applied Physics Letters |
Volume | 97 |
Issue number | 12 |
DOIs | |
Publication status | Published - 20 Sept 2010 |