Plasmonic quantum dot solar cells for enhanced infrared response

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

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    Enhanced near infrared photoresponse in plasmonic InGaAs/GaAs quantum dot solar cells (QDSC) is demonstrated. Long wavelength light absorption in the wetting-layer and quantum-dot region of the quantum dot solar cell is enhanced through scattering of light by silver nanoparticles deposited on the solar cell surface. Plasmonic light trapping results in simultaneous increase in short-circuit current density by 5.3 and open circuit voltage by 0.9 in the QDSC, leading to an overall efficiency enhancement of 7.6.

    Original languageEnglish
    Article number103505
    JournalApplied Physics Letters
    Volume100
    Issue number10
    DOIs
    Publication statusPublished - 5 Mar 2012

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