Title
Development Of Cigs2 Thin Film Solar Cells
Keywords
CIGSS thin film solar cells; Sol-gel; Sputtering target; Thickness uniformity
Abstract
Research and development of CuIn1-xGaxSe 2-ySy (CIGSS) thin-film solar cells on ultralightweight flexible metallic foil substrates is being carried out at FSEC PV Materials Lab for space applications. Earlier, the substrate size was limited to 3 cm × 2.5 cm. Large-area sputtering systems and scrubber for hydrogen selenide and sulfide have been designed and constructed for preparation of CIGSS thin-films on large (15 cm × 10 cm) substrates. A selenization/sulfurization furnace donated by Shell (formerly Siemens) Solar has also been refurbished and upgraded. The sputtering target assembly design was modified for proper clamping of targets and effective cooling. A new design of the magnetic assembly for large-area magnetron sputtering sources was implemented so as to achieve uniform deposition on large area. Lightweight stainless steel foil and ultralightweight titanium foil substrates were utilized to increase the specific power of solar cells. Sol-gel derived SiO2 layers were coated on titanium foil by dip coating method. Deposition parameters for the preparation of molybdenum back contact layers were optimized so as to minimize the residual stress as well as reaction with H2S. Presently large (15 cm × 10 cm) CuIn 1-xGaxS2 (CIGS2) thin film solar cells are being prepared on Mo-coated titanium and stainless steel foil by sulfurization of CuGa/In metallic precursors in diluted Ar:H2S(4%). Heterojunction partner CdS layers are deposited by chemical bath deposition. The regeneration sequence of ZnO/ZnO:Al targets was optimized for obtaining consistently good-quality, transparent and conducting ZnO/ZnO:Al bilayer by RF magnetron-sputter deposition. Excellent facilities at FSEC PV Materials Lab are one of its kinds and could serve as a nucleus of a small pilot plant for CIGSS thin film solar cell fabrication. © 2004 Elsevier B.V. All rights reserved.
Publication Date
2-15-2005
Publication Title
Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume
116
Issue
3 SPEC.ISS.
Number of Pages
303-309
Document Type
Article; Proceedings Paper
DOI Link
https://doi.org/10.1016/j.mseb.2004.05.053
Copyright Status
Unknown
Socpus ID
15744397057 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/15744397057
STARS Citation
Dhere, Neelkanth G.; Gade, Vivek S.; Kadam, Ankur A.; Jahagirdar, Anant H.; and Kulkarni, Sachin S., "Development Of Cigs2 Thin Film Solar Cells" (2005). Scopus Export 2000s. 12838.
https://stars.library.ucf.edu/scopus2000/12838