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2013 ; 6
(10
): 4565-4573
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gab.com Text
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English Wikipedia
Development of Screen-Printed Texture-Barrier Paste for Single-Side Texturization
of Interdigitated Back-Contact Silicon Solar Cell Applications
#MMPMID28788348
Chiu YS
; Cheng CL
; Whang TJ
; Chen CC
Materials (Basel)
2013[Oct]; 6
(10
): 4565-4573
PMID28788348
show ga
Continuous cost reduction of silicon-based solar cells is needed to lower the
process time and increase efficiency. To achieve lower costs, screen-printed
texture-barrier (SPTB) paste was first developed for single-side texturization
(ST) of the interdigitated back-contact (IBC) for silicon-based solar cell
applications. The SPTB paste was screen-printed on silicon substrates. The SPTB
paste was synthesized from intermixed silicate glass (75 wt %), a resin binder
(ethyl cellulose ethoce: 20 wt %), and a dispersing agent (fatty acid: 5 wt %).
The silicate glass is a necessity for contact formation during firing. A resin
binder and a dispersing agent determine the rheology of the SPTB paste. In this
work, by modulating various parameters, including post SPTB firing, alkali
texturing, and removal of the SPTB, the ST of IBC silicon solar cells was
achieved. Since the advantages of the SPTB paste include low toxicity and prompt
formation of the texture-barrier, SPTB is potentially suited for simple
fabrication at low-cost for solar cell applications. The cost of the SPTB is
around $100/kg which is lower than the SiH?/NH? gas ambient used in
plasma-enhanced chemical vapor deposition (PECVD). Thus, the expensive Si?N? film
deposited by PECVD using SiH? and NH? gas ambient for silicon solar cells can be
replaced by this SPTB.