NDLI: Device optimization for screen printed interdigitated back contact solar cells

Content Provider	IEEE Xplore Digital Library
Author	Renshaw, J. Rohatgi, A.
Copyright Year	2011
Description	Author affiliation: University Center of Excellence for Photovoltaics, Georgia Institute of Technology, Atlanta, GA, USA (Rohatgi, A.) \|\| Department of Physics, Georgia Institute of Technology, Atlanta, GA, USA (Renshaw, J.)
Abstract	Two dimensional simulations were performed to asses the potential for screen printed interdigitated back contact solar cells. In this work we optimized the design of the rear back surface field and emitter for screen printed contacts in conjunction with the design of the front surface field for best performance. With these optimized diffusion profiles we then explored the best cell design by varying the pitch, the gap between the $n^{+}$ and $p^{+}$ regions and the base resistivity. Model calculations provide guidelines for designing screen printed IBC solar cells given certain limitations on base resistivity or ability to create a small gap between the $n^{+}$ and $p^{+}$ diffusion. In these simulations care was taken to assign realistic parameters to cell design, wafer quality, and cell dimensions that are achievable for screen printing technology. Through these simulations we show the potential for a 22% efficient solar cell with screen printed contacts. Higher emitter fraction, smaller gap, and opaque diffused regions play an important role in attaining high efficiency screen printed interdigitated back contact solar cells.
Starting Page	002924
Ending Page	002927
File Size	319178
Page Count	4
File Format	PDF
ISBN	9781424499663
ISSN	01608371
e-ISBN	9781424499656
DOI	10.1109/PVSC.2011.6186557
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Doping Photovoltaic cells Conductivity Semiconductor process modeling Photovoltaic systems Materials
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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