NDLI: Developing solar cell front contacts using an all inkjet printing process following the selective emitter approach

Content Provider	IEEE Xplore Digital Library
Author	Shankar, R. Whites, K.W. Ty Chen Liker, S. Tamarin, C.
Copyright Year	2012
Description	Author affiliation: Nanosci. & Eng. Program, South Dakota Sch. of Mines & Technol., Rapid City, SD, USA (Shankar, R.) \|\| Dept. of Electr. & Comput. Eng., South Dakota Sch. of Mines & Technol., Rapid City, SD, USA (Whites, K.W.) \|\| Trident Ind. Inkjet - An ITW Co., Brookfield, CT, USA (Ty Chen; Liker, S.; Tamarin, C.)
Abstract	We present an approach for complete inkjet printing of solar cell front contacts for the implementation of "selective emitter approach", which can help in solar cell efficiency improvement. The fabrication of optimized emitters that can allow the low recombination below the silver front contact is an important process in solar cell fabrication. This selective emitter approach presents a heavily doped layer beneath the electrode and lightly doped regions between the electrode grids. Selective opening of the anti reflection coating is needed to implement this combination of heavily and lightly doped regions. This was achieved using an inkjet approach by printing an etchant-dopant ink followed by the printing of a diffusion barrier using a dielectric ink. Using a Trident Jet256S industrial printhead we created etched pattern with etch width -50 μm. Once this pattern was created, the metallic front contact grid was printed using a silver nano-ink on top of the etched regions. Inkjet printed silver front contact grid with line width -75 μm was printed successfully.
Sponsorship	IEEE
Starting Page	25
Ending Page	29
File Size	701455
Page Count	5
File Format	PDF
ISBN	9781467328715
e-ISBN	9781467328715
DOI	10.1109/NMDC.2012.6527603
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solar cells Inkjet efficiency and cost reduction silver conductive ink selective emitter
Content Type	Text
Resource Type	Article

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