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L. Danos et al. / Solar Energy Materials & Solar Cells 98
(2012) 486-490 489
a!le 1
Esti"ate# $ara"eters %se# in E. (1) 'al'%late# ro" te "eas%re#
E*E. e 'ange in sort 'ir'%it '%rrent #ensity #+s'#%e to te LDS
layer an# te 'on,ersion e'ien'y in'rease is son or (a)
M1. an# (!) e $oton 3%es5 res$e'ti,ely. e *Cas !een esti"ate#
ro" e. (1) in ea' 'ase.
(a)
LDS Layer Cal'%late##+s'("/'"2) (M1.) /E*E'ellS
087 1.6 0.67
087 & 0 1.88 0.67
(!)
LDS Layer Cal'%late##+s'("/'"2) (e) /E*E'ellS
087 2.18 0.67
087 & 0 2.6 0.67
e ,al%es or *%$ to 20: so tat a signi'ant a"o%nt o
te in'i#ent s$e'tr%" !elo te C#S !an# ga$ is a!sor!e# in te
LDS layer. e *'al'%late# or te enon la"$ is iger tan te
M1. s$e'tr%" !e'a%se te enon la"$ as a iger 'ontent o
;;!l%e $otons a eat%re tat 'an !e i"$ro,e# !y siting
te e"ission $ea? %rter toar#s longer a,elengts %sing a
"it%re o #ierent #yes (i.e. 087 & @range @240).
Ae note tat te *C,al%es o!taine# are B 0:5 i' is near
0:o te teoreti'al ,al%es an# in#i'ates goo# $oton 'olle'tion
it "ini"al losses in te LDS layers. e "aor losses are
attri!%te# to 3%ores'en'e %en'ing #%e to te ig #ye 'on
'entrations %se# in te a!ri'ation o te s$in 'oate# layers.
@,erall5 te LDS layers so a ig #egree o $oton 'olle'tion
e'ien'ies (*C).
e o!ser,e# in'rease in E*E #%e to te LDS layer it to
#yes (0 an# 087) 'orres$on#s to a rise in te sort 'ir'%it
'%rrent #ensity %$ to 1.88"/'"2 (M1. s$e'tr%") or
2.6"/'"2(enon la"$ s$e'tr%"). elati,e $oer 'on,ersion
e'ien'y in'reases %$ to 10: 'an !e a'ie,e# %n#er te M1.
s$e'tr%" an# %$ to 1: it te 'orre'te# enon la"$ ill%"ina
tion so%r'e or te C#e solar 'ells %se# in tis st%#y. e sort
'ir'%it '%rrent #e,iation !eteen te to ill%"ination so%r'es
is
#%e to a iger !l%e eigting o te enon s$e'tra in 'o"$ar
ison it te M1. s$e'tr%"5 lea#ing to iger sort 'ir'%it
'%rrent ,al%es.
.Con'l%sions
e e'ien'y $eror"an'e o C#e solar 'ells is i"$ro,e# !ye"$loying
l%"ines'en'e #on-siting layers (LDS) 'ontaining
to #yes ro" te S= L%"ogen = series (0 an# 087)5 i'
"aniest e'ient e'itation energy transer !eteen te". e
a#,antages o %sing "%lti$le #yes in LDS layers are $resente#
an#
'o"$are# to single #ye LDS layers. ere is an o!ser,e#
in'rease
in te E*E '%r,e o C#e solar 'ells5 i' 'orres$on#s to
1.88"/'"2in'rease in te sort 'ir'%it '%rrent #ensity %n#er
M1. ill%"ination s$e'tra or 2.6 "/'"2%n#er te !l%e
eigte# enon s$e'tra. e relati,e $oer 'on,ersion in'rease
in e'ien'y o!ser,e# or te solar 'ells %se# in tis st%#y ere
%$ to 10: %n#er M1.. E'itation energy transer !eteen to
#yes is son to o$ti"ise te $eror"an'e o te LDS layer an#
also in'rease te a!sor$tion a!ility o te layer5 eten#ing
into
te F region o te s$e'tr%". si"$le analyti'al "o#el is
* *C Con,ersion e'ien'y in'rease (:)
0.16 0.4 8.8
0.18 0.1 10.0
* *C Con,ersion e'ien'y in'rease (:)
0.22 0.44 14.0
0.26 0.4 1.2
$resente#5 i' allos or te #ierent $ro'esses o''%rring in
te LDS layer to !e a''o%nte# or an# te res%lts in#i'ate a ig
#egree o $oton 'olle'tion e'ien'ies (*C) a'ie,e# in te LDS
layers.
'?nole#ge"ents
=inan'ial s%$$ort !y te Gysi'al S'ien'es esear' Co%n'il
(EGSC) tro%g te S%$ergen Grogra""e G21 is grate%lly
a'?nole#ge#. Ae o%l# li?e to tan? S= or #onating te
#yes %se# or tis st%#y.
eeren'es
H1I J.+. Jo,el5 .. Jo#gson5 +.M. Aoo#all5 e ee't o l%"ines'ent
a,elengt
siting on solar 'ell s$e'tral res$onse5 Solar Energy Materials 2
(199)
19-29.
H2I E. Kla"$atis5 D. oss5 K.. M'ntos5 .S. i'ar#s5 Enan'ing te
$eror
"an'e o solar 'ells ,ia l%"ines'ent #on-siting o te in'i#ent
s$e'tr%"
re,ie5 Solar Energy Materials an# Solar Cells 97 (2009)
1182-1194.
H7I M. MartineN5 C. %illen5 M. %tierreN5 +. Jerrero5
@$ti"isation o C#S/C@!ilayers or teir a$$li'ation as in#os in
$oto,oltai' solar 'ells5 Solar
Energy Materials an# Solar Cells 47 (1996) 29-710.
H4I K. Oa?a"%ra5 M. oto5 . =%iara5 . oya"a5 J. @?a"oto5 n3%en'e
o C#S
in#o layer on 2-"" ti'? C#S/C#e tin l" solar 'ells5 Solar
EnergyMaterials an# Solar Cells (2007) 18-192.
HI +.E. ranata5 +.. Sites5 . Contreras-G%ente5 an# .D. Co"$aan5
Ee't o C#S
ti'?ness on C#S/C#e %ant%" e'ien'y solar 'ells5 in Gro'ee#ings o
te
2t EEE Goto,oltai' S$e'ialists Coneren'e5 19965 $$. 87-86.
H6I . or#illo5 C. Cal#eron5 an# J. nante5 C#e tin l" solar 'ells
it PnSe
!%er layer5 in Gro'ee#ings o te 29t EEE Goto,oltai'
S$e'ialists
Coneren'e5 20025 $$. 644-64.
HI S.+.C. r,ine5 . arrioN5 D. La"!5 E.A. +ones5 .L.
olan#s-+ones5 M@CD o
tin l" $oto,oltai' solar 'ells-Oet-generation $ro#%'tion
te'nologyQ
+o%rnal o Crystal rot 710 (2008) 198-207.
H8I J. M%3er5 M. ar5 . La%er"ann5 K. ane5 M. S'ro#er5 M.
L%steiner5
C. =is'er5 . Oiesen5 =. Karg5 Colloi# atta'"ent !y L-layers
Creating
3%ores'ing layers to in'rease %ant%" e'ien'y o solar 'ells5
Solar Energy
Materials an# Solar Cells 90 (2006) 7147-710.
H9I . laeser5 F. a%5 "$ro,e"ent o $oton 'olle'tion in C%(n5a)Se2
solar'ells an# "o#%les !y 3%ores'ent re%en'y 'on,ersion5 in Soli#
=il"s 1
(200)964-96.
H10I . Mar%ya"a5 . Kita"%ra5 ransor"ations o te a,elengt o te
ligt
in'i#ent %$on C#S/C#e solar 'ells5 Solar Energy Materials an#
Solar Cells 69
(2001)61-68.
H11I . = Rorster5 nter"ole'%lar energy "igration an#
=l%ores'en'e5 nnals o
Gysi's 2 (1948) -.
H12I . ale%r5 Mole'%lar =l%ores'en'e Grin'i$les an# $$li'ations5
Ailey-CJ5
Aeinei"5 20015 $$. 24-22.
H17I M.+. C%rrie5 +.K. Ma$el5 .D. Jei#el5 S. ori5 M.. al#o5
Jig-e'ien'y
organi' solar 'on'entrators or $oto,oltai's5 S'ien'e 721 (2008)
226-228.
H14I G. Kitti#a'a'an5 L. Danos5 .+.+. Meyer5 O. l#er"an5 .
Mar?,art5 Goton
Colle'tion E'ien'y o =l%ores'ent Solar Colle'tors5 CJM
nternational
+o%rnal o Ce"istry 61 (200) 80-86.
H1I S. ailey5 . Lo?ey5 M. Janes5 +. Searer5 +. M'laerty5 .
ea%"ont5 . aseler5
+. Lay%e5 D. ro%ssar#5 . Pang5 @$ti"iNe# e'itation energy
transer in a
tree-#ye l%"ines'ent solar 'on'entrator5 Solar Energy Materials
an# Solar
Cells 91 (200) 6-.
