NDLI: Fabrication of lattice mismatched multijunction photovoltaic cells using 3D integration concepts

Content Provider	IEEE Xplore Digital Library
Author	Cruz-Campa, J.L. Nielson, G.N. Lentine, A.L. Filatov, A.A. Resnick, P.J. Sanchez, C.A. Rowen, A.M. Okandan, M. Gupta, V.P. Nelson, J.S.
Copyright Year	2012
Description	Author affiliation: Sandia National Laboratories, Albuquerque, NM, 87123, USA (Cruz-Campa, J.L.; Nielson, G.N.; Lentine, A.L.; Filatov, A.A.; Resnick, P.J.; Sanchez, C.A.; Rowen, A.M.; Okandan, M.; Gupta, V.P.; Nelson, J.S.)
Abstract	We present the experimental procedure to create lattice mismatched multijunction photovoltaic (PV) cells using 3D integration concepts. Lattice mismatched multijunction photovoltaic (PV) cells with decoupled electrical outputs could achieve higher efficiencies than current-matched monolithic devices. Growing lattice mismatched materials as a monolithic structure generates defects and decreases performance. We propose using methods from the integrated circuits and microsystems arena to produce the PV cell. The fabricated device consists of an ultrathin (6 µm) series connected InGaP/GaAs PV cell mechanically stacked on top of an electrically independent silicon cell. The InGaP/GaAs PV cell was processed to produce a small cell (750 µm) with back-contacts where all of the contacts sit at the same level. The dual junction and the silicon (c-Si) cell are electrically decoupled and the power from both cells is accessible through pads on the c-Si PV cell. Through this approach, we were able to fabricate a functional double junction PV cell mechanically attached to a c-Si PV cell with independent connections.
Starting Page	000932
Ending Page	000936
File Size	1142354
Page Count	5
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6317755
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gallium arsenide Junctions Silicon Substrates Photovoltaic cells Metals Photovoltaic systems III–V semiconductor materials Silicon devices photovoltaic cells solar energy Microstructure
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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