CIGS Module Development on Flexible Substrates

S. Wiedeman, M. E. Beck, R. Butcher, I. Repins, N. Gomez, B. Joshi, R. G. Wendt, J. S. Britt

Research output: Contribution to conferencePaperpeer-review

28 Scopus Citations


Advances in module efficiency and process control using CIGS-based PV on flexible substrates are described. Modules on thin webs of stainless steel foil (SST) and polyimide (PI) have been made using continuous roll-to-roll (RTR) processing in compact reactors. Process control improvements for many important parameters have been instituted, including in-situ X-ray fluorescence and real-time Se delivery regulation; these have resulted in dramatic increases in uniformity and reproducibility for both substrate types. For polyimide substrates, several material limitations and previously reported difficulties such as back contact cracking, poor absorber adhesion and low temperature processing are addressed. Successful development of a low-loss, all-laser scribing process for monolithic integration on polyimide is described.

Original languageAmerican English
Number of pages4
StatePublished - 2002
Externally publishedYes
Event29th IEEE Photovoltaic Specialists Conference - New Orleans, LA, United States
Duration: 19 May 200224 May 2002


Conference29th IEEE Photovoltaic Specialists Conference
Country/TerritoryUnited States
CityNew Orleans, LA

Bibliographical note

Work performed by Global Solar Energy, Inc., Tucson, Arizona and ITN Energy Systems, Littleton, Colorado

NREL Publication Number

  • NREL/CP-520-33677


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