Properties of Cd and Zn Partial Electrolyte Treated CIGS Solar Cells: Preprint

Kannan Ramanathan

Research output: Contribution to conferencePaper


We study the influence of Cd partial baths on the photovoltaic properties of CuInGaSe2 (CIGS) and CuIn-GaSSe2 (CIGSS) thin film absorbers. We find that efficient solar cells can be fabricated by this treatment, and we compare their properties with those containing CdS window layers grown by chemical bath deposition. The results suggest that Cd plays a dominant role in establishing efficientphotovoltaic junctions in CuInSe2 alloys. Micron scale photoluminescence scans show non-uniformity along the length probed. Cd treatment quenches one of the luminescence transitions, which indicates a change in shallow acceptor level density. We present a model that helps to explain the evolution of photovoltaic action.
Original languageAmerican English
Number of pages7
StatePublished - 2002
Event29th IEEE PV Specialists Conference - New Orleans, Louisiana
Duration: 20 May 200224 May 2002


Conference29th IEEE PV Specialists Conference
CityNew Orleans, Louisiana

Bibliographical note

Prepared for the 29th IEEE PV Specialists Conference, 20-24 May; 2002, New Orleans, Louisiana

NREL Publication Number

  • NREL/CP-520-31475


  • absorbers
  • chemical bath deposition (CBD)
  • compositional grading
  • CuInGaSe2 (CIGS)
  • CuInGaSSe2 (CIGS)
  • current-voltage
  • electrolytes
  • interface passivation
  • inversion
  • n-type doping
  • photoluminescence
  • PV
  • thin films


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