The improvement of down-shifting solar cells through reducing the reflection in short wavelength range by scattering is investigated experimentally and theoretically. Such down-shifting solar cells are fabricated by doping Y2O3 particles into down-shifting ethylene vinyl acetate films with CaAlSiN3:Eu2+ phosphors. Experimental results show that the scattering of Y2O3 particles can reduce the reflection of the down-shifting solar cells in the wavelength below 450 nm. It can be attributed to two reasons. The first is that the backscattering in the short wavelength is weaker than that in the middle and long wavelength. The second is that the scattering by Y2O3 particles allows more light reach the phosphors and increases their absorption. This means that more photons with poor spectral responses can be converted into the photons with better spectral responses. This work provides a way to realize simultaneously strengthening the down-shifting effect and suppressing the phosphor-induced reflection and can be used to further improve the down-shifting solar cells.

1.
C. H.
Kang
,
Y.
Wang
,
O.
Alkhazragi
,
H.
Lu
,
T. K.
Ng
, and
B. S.
Ooi
,
APL Photonics
8
(
2
),
020903
(
2023
).
2.
C. P.
Thomas
,
A. B.
Wedding
, and
S. O.
Martin
,
Sol. Energy Mater. Sol. Cells
98
,
455
464
(
2012
).
3.
Y.
Idutsu
,
K.
Awai
,
J.
Liang
,
H.
Nishimura
,
D.
Kim
,
Y.-G.
Shim
, and
N.
Shigekawa
,
Jpn. J. Appl. Phys., Part 1
62
,
SK1005
(
2023
).
4.
N. K.
Kalluvettukuzhy
,
M. R.
Maciejczyk
,
I.
Underwood
, and
N.
Robertson
,
J. Mater. Chem. A
11
(
25
),
13195
13200
(
2023
).
5.
J. Y.
Huang
,
Y.
Wang
,
G.
Tao Fei
,
S. H.
Xu
,
Z.
Zeng
, and
B.
Wang
,
Ceram. Int.
49
(
7
),
11091
11100
(
2023
).
6.
R.
Rothemund
,
Sol. Energy Mater. Sol. Cells
120
,
616
621
(
2014
).
7.
Y. J.
Cho
,
C.
Lee
,
H. C.
Kang
,
B.
Kim
,
G.-H.
Kim
,
G.
Kang
,
J.
Ryu
,
K.
Yoo
,
G. S.
Park
,
K.-T.
Lee
,
B. K.
Min
,
J.-J.
Lee
, and
D.-H.
Ko
,
Chem. Eng. J.
462
,
142153
(
2023
).
8.
J.
Cho
,
Jpn. J. Appl. Phys., Part 1
62
,
SE0802
(
2023
).
9.
R.
Bernal-Correa
,
A.
Morales-Acevedo
, and
J.
Montes-Monsalve
,
Phys. Scr.
98
(
6
),
065904
(
2023
).
10.
B.
Das
,
S. M.
Hossain
,
A.
Nandi
,
D.
Samanta
,
A. K.
Pramanick
,
S. O.
Martínez Chapa
, and
M.
Ray
,
J. Phys. D
55
(
2
),
025106
(
2022
).
11.
X.
Huang
,
S.
Han
,
W.
Huang
, and
X.
Liu
,
Chem. Soc. Rev.
42
(
1
),
173
201
(
2013
).
12.
E.
Klampaftis
,
D.
Ross
,
K. R.
McIntosh
, and
B. S.
Richards
,
Sol. Energy Mater. Sol. Cells
93
(
8
),
1182
1194
(
2009
).
13.
G.
Brito-Santos
,
C.
Hernández-Rodríguez
,
B.
Gil-Hernández
,
J.
Sanchiz
,
I. R.
Martín
,
B.
González-Díaz
, and
R.
Guerrero-Lemus
,
Materials
16
(
14
),
5068
(
2023
).
14.
C. K.
Huang
,
Y. C.
Chen
,
W. B.
Hung
,
T. M.
Chen
,
K. W.
Sun
, and
W. ‐L.
Chang
,
Prog. Photovoltaics
21
(
7
),
1507
1513
(
2013
).
15.
W.-J.
Ho
,
Y.-T.
Shen
,
J.-J.
Liu
,
B.-J.
You
, and
C.-H.
Ho
,
Nanomaterials
7
(
10
),
340
(
2017
).
16.
B.
Fetliński
,
S.
Turczyński
,
M.
Malinowski
, and
P.
Szczepański
,
Materials
14
(
11
),
2753
(
2021
).
17.
G.
Shao
,
C.
Lou
,
J.
Kang
, and
H.
Zhang
,
Appl. Phys. Lett.
107
(
25
),
253904
(
2015
).
18.
S. K.
Karunakaran
,
C.
Lou
,
G. M.
Arumugam
,
C.
Huihui
, and
D.
Pribat
,
Sol. Energy
188
,
45
50
(
2019
).
19.
J.
Ueda
,
S.
Tanabe
,
K.
Takahashi
,
T.
Takeda
, and
N.
Hirosaki
,
Bull. Chem. Soc. Jpn.
91
(
2
),
173
177
(
2018
).
20.
G.
Li
,
J.
Chen
,
Z.
Mao
,
W.
Song
,
T.
Sun
, and
D.
Wang
,
Ceram. Int.
42
(
1
),
1756
1761
(
2016
).
21.
J.
Xu
,
Y.
Yang
,
Z.
Jiang
,
B.
Hu
,
X.
Wang
,
H.
Ji
,
J.
Wang
,
Z.
Guo
,
B.
Du
,
C.
Dam-Hansen
, and
O. B.
Jensen
,
Ceram. Int.
47
(
11
),
15307
15312
(
2021
).
22.
C.
Jiang
,
G.
Zhang
,
Z.
Hong
,
J.
Chen
,
Y.
Li
,
X.
Yuan
,
Y.
Lin
,
C.
Yu
,
T.
Wang
,
T.
Song
,
Y.
Wang
, and
B.
Sun
,
Adv. Mater.
35
(
6
),
2208042
(
2023
).
23.
Z. C.
Holman
,
A.
Descoeudres
,
L.
Barraud
,
F. Z.
Fernandez
,
J. P.
Seif
,
S.
De Wolf
, and
C.
Ballif
,
IEEE J. Photovoltaics
2
(
1
),
7
15
(
2012
).
24.
L.
Mazzarella
,
A. B.
Morales-Vilches
,
L.
Korte
,
R.
Schlatmann
, and
B.
Stannowski
,
Sol. Energy Mater. Sol. Cells
179
,
386
391
(
2018
).
25.
Y.
Suda
,
Y.
Kamigaki
, and
H.
Yamamoto
,
J. Appl. Phys.
123
(
16
),
161542
(
2018
).
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