4.7 Article

Setting boundaries on the recipe for a successful RbF post-deposition treatment of CIGS

Journal

SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 245, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.solmat.2022.111862

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Funding

  1. U.S. Department of Energy (DOE) [DE-AC36-08GO28308]
  2. U.S. Department of Energy?s Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office [34352]

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This article describes the optimization steps for improving the performance of Cu(In,Ga)Se-2 solar cells using RbF post-deposition treatments and provides a detailed recipe for others to reproduce the procedure and achieve successful results in a reasonable time.
RbF post-deposition treatments have been explored in the literature for increasing the open-circuit voltage, fill factor, and hence the efficiency of Cu(In,Ga)Se-2 solar cells. However, given the few papers documenting the experimental steps, it was difficult to quickly reproduce the results. This contribution describes some of the optimization steps that led to a successful RbF PDT based on device performance. We present results that put boundaries on the temperatures of the RbF cell and the lamp (for sample heating) setpoint. The best recipe for our specific growth process is documented in detail so that others may copy the procedure and possibly arrive at a successful RbF PDT in a reasonable time.

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