Electron-hole recombination properties of In0.5 Ga0.5 As/GaAs quantum dot solar cells and the influence on the open circuit voltage

Greg Jolley*, Hao Feng Lu, Lan Fu, Hark Hoe Tan, Chennupati Jagadish

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    48 Citations (Scopus)

    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 languageEnglish
    Article number123505
    JournalApplied Physics Letters
    Volume97
    Issue number12
    DOIs
    Publication statusPublished - 20 Sept 2010

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