Optimization of Phase-Engineered a-Si:H-Based Multi-Junction Solar Cells: Second Annual Technical Status Report, January 2003--January 2004

    Research output: NRELSubcontract Report

    Abstract

    This subcontract report entails investigation of engineering improvements in the performance and stability of solar cells in a systematic way. It consists of the following four tasks: Task 1-Materials research and device development; Task 2-Process improvement directed by real-time diagnostics; Task 3-Device loss mechanisms; and Task 4-Characterization strategies for advanced materials. Thereal-time spectroscopic ellipsometry (RTSE) multichamber is near completion, and trial depositions with a-Si:H will begin shortly. Construction of the new dual beam photoconductivity (DBP) apparatus has been completed, and the new capabilities are being used in studies on a-Si:H thin films. A new apparatus is being constructed for in-depth studies on the mechanisms limiting the performance ofa-Si:H solar cells and the two track studies (cells and films) of the Staebler-Wronski Effect. The capabilities include the ability to integrate the cell characteristics including the quantum efficiency, at different temperatures on both p-i-n and n-i-p solar cells.
    Original languageAmerican English
    Number of pages78
    StatePublished - 2004

    Bibliographical note

    Work performed by Pennsylvania State University, University Park, Pennsylvania

    NREL Publication Number

    • NREL/SR-520-36695

    Keywords

    • crystalline
    • current-voltage
    • density
    • devices
    • differential diode quality factor
    • dual-beam photoconductivity (DBP)
    • light-induced
    • photocurrent
    • PV
    • quasi-fermi splitting
    • real-time spectroscopic ellipsometry (RTSE)
    • solar cells
    • thermal annealing

    Fingerprint

    Dive into the research topics of 'Optimization of Phase-Engineered a-Si:H-Based Multi-Junction Solar Cells: Second Annual Technical Status Report, January 2003--January 2004'. Together they form a unique fingerprint.

    Cite this