Silicon heterojunction (HJ) solar cells with different rear passivation and contact designs were fabricated on ∼25 μm semiconductor-on-metal (SOM) exfoliated substrates. It was found that the performance of these cells is limited by recombination at the rear-surface. Employing the dual-HJ architecture resulted in the improvement of open-circuit voltage (Voc) from 605 mV (single-HJ) to 645 mV with no front side intrinsic amorphous silicon (i-layer) passivation. Addition of un-optimized front side i-layer passivation resulted in further enhancement in Voc to 662 mV. Pathways to achieving further improvement in the performance of HJ solar cells on ultra-thin SOM substrates are discussed.
REFERENCES
1.
R. M.
Swanson
, “Developments in silicon solar cells
,” in Proceedings of IEEE Electron Devices Meeting, Washington, DC, 10–12 December 2007
(IEEE
, 2007
), pp. 359
–362
.2.
G. P.
Willeke
, Sol. Energy Mater. Sol. Cells
72
, 191
(2002
).3.
A. R.
Aberle
, Prog. Photovoltaics
8
, 473
(2000
).4.
F.
Dross
, J.
Robbelein
, B.
Vandevelde
, E.
Van Kerschaver
, I.
Gordon
, G.
Beaucarne
, and J.
Poortmans
, Appl. Phys. A
89
, 149
(2007
).5.
T.
Mishima
, M.
Taguchi
, H.
Sakata
, and E.
Maruyama
, Sol. Energy Mater. Sol. Cells
95
, 18
(2011
).6.
L.
Mathew
and D.
Jawarani
, U.S. patent 7,749,884 (6 July 2010
).7.
Y.
Zhai
, L.
Mathew
, R.
Rao
, D.
Xu
, and S. K.
Banerjee
, Nano Lett.
12
, 5609
(2012
).8.
E. U.
Onyegam
, D.
Sarkar
, M.
Hilali
, S.
Saha
, R. A.
Rao
, L.
Mathew
, D.
Jawarani
, J.
Mantey
, M.
Ainom
, R.
Garcia
, W.
James
, and S. K.
Banerjee
, Sol. Energy Mater. Sol. Cells
111
, 206
(2013
).9.
R. A.
Rao
, L.
Mathew
, S.
Saha
, S.
Smith
, D.
Sarkar
, R.
Garcia
, R.
Stout
, A.
Gurmu
, E. U.
Onyegam
, D.
Xu
, D.
Ahn
, D.
Xu
, D.
Jawarani
, J. G.
Fossum
, and S. K.
Banerjee
, “A novel low cost 25 μm thin exfoliated monocrystalline Si solar cell technology,” in Proceedings of 37th IEEE Photovoltaic Specialist Conference, Seattle, WA, 19–24 June 2011
(IEEE, 2011), p. 001504
.10.
S.
Saha
, M. M.
Hilali
, E. U.
Onyegam
, D.
Sarkar
, D.
Jawarani
, R. A.
Rao
, L.
Mathew
, R. S.
Smith
, D.
Xu
, U. K.
Das
, B.
Sopori
, and S. K.
Banerjee
, Appl. Phys. Lett.
102
, 163904
(2013
).11.
M.
Tanaka
, M.
Taguchi
, T.
Matsuyama
, T.
Sawada
, S.
Tsuda
, S.
Nakano
, H.
Hanafusa
, and Y.
Kuwano
, Jpn. J. Appl. Phys., Part 1
31
, 3518
(1992
).12.
M.
Taguchi
, A.
Terakawa
, E.
Maruyama
, and M.
Tanaka
, Prog. Photovoltaics
13
, 481
(2005
).13.
J. A.
Schüttauf
, K. H.
van der Werf
, I. M.
Kielen
, W. G.
van Sark
, J. K.
Rath
, and R. E.
Schropp
, Appl. Phys. Lett.
98
, 153514
(2011
).14.
S.
Dauwe
, J.
Schmidt
, and R.
Hezel
, “Very low surface recombination velocities on p- and n-type silicon wafers passivated with hydrogenated amorphous silicon films
,” in Proceedings of the 29th IEEE Photovoltaic Specialist Conference, New Orleans, LA, 19–24 May 2002
(IEEE, 2002), pp. 1246
–1249
.15.
S. D.
Wolf
and M.
Kondo
, Appl. Phys. Lett.
91
, 112109
(2007
).16.
T. F.
Schulze
, H. N.
Beushausen
, T.
Hansmann
, L.
Korte
, and B.
Rech
, Appl. Phys. Lett.
95
, 182108
(2009
).17.
T. F.
Schulze
, H. N.
Beushausen
, C.
Leendertz
, A.
Dobrich
, B.
Rech
, and L.
Korte
, Appl. Phys. Lett.
96
, 252102
(2010
).18.
B.
Anthony
, T.
Hsu
, L.
Breaux
, R.
Qian
, S.
Banerjee
, and A.
Tasch
, J. Electron. Mater.
19
, 1089
(1990
).19.
E. U.
Onyegam
, W.
James
, R.
Rao
, L.
Mathew
, M.
Hilali
, and S. K.
Banerjee
, “Amorphous/crystalline silicon heterojunction solar cells via remote plasma chemical vapor deposition: Influence of hydrogen dilution, rf power, and sample z-height position
,” in Proceedings of 38th IEEE Photovoltaic Specialist Conference, Tampa, FL, 16–21 June 2013
.20.
R. A.
Sinton
and A.
Cuevas
, Appl. Phys. Lett.
69
, 2510
(1996
).21.
M.
Garin
, U.
Rau
, W.
Brendel
, I.
Martin
, and R.
Alcubilla
, J. Appl. Phys.
98
, 093711
(2005
).22.
J. G.
Fossum
, D.
Sarkar
, L.
Mathew
, R.
Rao
, D.
Jawarani
, and M. E.
Law
, “Back-contact solar cells in thin crystalline silicon
,” in Proceedings of 35th IEEE Photovoltaic Specialist Conference, Honolulu, HI, 20-25 June 2010
(IEEE
, 2010
), pp. 3131
–3136
.23.
J.
Zhao
, A.
Wang
, P. P.
Altermatt
, S. R.
Wenham
, and M. A.
Green
, Sol. Energy Mater. Sol. Cells
41–42
, 87
(1996
).24.
A.
Froitzheim
, K.
Brendel
, L.
Elstner
, W.
Fuhs
, K.
Kliefoth
, and M.
Schmid
, J. Non-Cryst. Solids
299–302
, 663
–667
(2002
).25.
B.
Chabra
, S.
Bowden
, R. L.
Opila
, and C. B.
Honsberg
, Appl. Phys. Lett.
96
, 063502
(2010
).© 2014 AIP Publishing LLC.
2014
AIP Publishing LLC
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