Due to the superiority of easy manufacture, low cost, coupled with super optoelectronic attributes, the metal halide perovskites have appeared as an emerging class of semiconductors owning their considerable potential for assorted utilization in humidity sensors. Nevertheless, the toxicity problem along with inherent instability of lead (Pb) halide perovskites is grimly impeding the large-scale manufacturing as well as commercialization. Herein, lead-free Cs3Sb2Br9 perovskites were successfully synthesized using a modified ligand-assisted reprecipitation approach and the humidity sensing properties relevant for humidity sensor applications were investigated. The as-fabricated Cs3Sb2Br9 humidity sensors display a super-high impedance variation of more than 105, and the testing range can be extended to a very low humidity (2% relative humidity, RH). The value of hysteresis is as low as 2.9%, and the response/recovery time is discovered to reach ∼0.9/3 s from 11% to 95% RH, which owns a large potential in the detection of the real-time moisture. Moreover, the Cs3Sb2Br9 humidity sensor boasts good reversibility and a remarkable level of stability. Our results demonstrate the potential for lead-free Cs3Sb2Br9 perovskites in a real-time and high-performance humidity sensor.

1.
W.
Xu
,
F.
Li
,
Z.
Cai
,
Y.
Wang
,
F.
Luo
, and
X.
Chen
,
J. Mater. Chem. C
4
,
9651
9655
(
2016
).
2.
R.
Liang
,
A.
Luo
,
Z.
Zhang
,
Z.
Li
,
C.
Han
, and
W.
Wu
,
Sensors
20
,
5601
(
2020
).
3.
Z.
Duan
,
Y.
Jiang
, and
H.
Tai
,
J. Phys. Chem. C
9
,
14963
14980
(
2021
).
4.
J.
Yang
,
R.
Shi
,
Z.
Lou
,
R.
Chai
,
K.
Jiang
, and
G.
Shen
,
Small
15
,
1902801
(
2019
).
5.
Z.
Li
,
J.
Wang
,
Y.
Xu
,
M.
Shen
,
C.
Duan
,
L.
Dai
, and
Y.
Ni
,
Carbohydr. Polym.
270
,
118385
(
2021
).
6.
M. A.
Haque
,
A.
Syed
,
F. H.
Akhtar
,
R.
Shevate
,
S.
Singh
,
K.-V.
Peinemann
,
D.
Baran
, and
T.
Wu
,
ACS Appl. Mater. Interfaces
11
,
29821
29829
(
2019
).
7.
P.
Zhang
,
L. X.
Zhang
,
H.
Xu
,
Y.
Xing
,
J.-J.
Chen
, and
L.-J.
Bie
,
Rare Met.
40
,
1614
1621
(
2021
).
8.
X.
Wang
,
J. G.
Liang
,
J. K.
Wu
,
X. F.
Gu
, and
N. Y.
Kim
,
Sens. Actuators, B: Chem.
351
,
130935
(
2022
).
9.
T.
Kirchartz
,
J. A.
Márquez
,
M.
Stolterfoht
, and
T.
Unold
,
Adv. Energy Mater.
10
,
1904134
(
2020
).
10.
K.
Park
,
J. H.
Lee
, and
J. W.
Lee
,
ACS Energy Lett.
7
,
1230
1239
(
2022
).
11.
U.
Din
,
M.
Mohamed
,
M.
Salleh
, and
T.
Aziz
,
J. Mater. Sci.: Mater. Electron.
33
,
13625
13633
(
2022
).
12.
X. K.
Liu
,
W.
Xu
,
S.
Bai
,
Y.
Jin
,
J.
Wang
,
R. H.
Friend
, and
F.
Gao
,
Nat. Mater.
20
,
10
21
(
2021
).
13.
H.
Dong
,
C.
Zhang
,
X.
Liu
,
J.
Yao
, and
Y. S.
Zhao
,
Chem. Soc. Rev.
49
,
951
982
(
2020
).
14.
L.
Lei
,
Q.
Dong
,
K.
Gundogdu
, and
F.
So
,
Adv. Funct. Mater.
31
,
2010144
(
2021
).
15.
D.
Hao
,
J.
Zou
, and
J.
Huang
,
InfoMat
2
,
139
169
(
2020
).
16.
H. P.
Wang
,
S.
Li
,
X.
Liu
,
Z.
Shi
,
X.
Fang
, and
J. H.
He
,
Adv. Mater.
33
,
2003309
(
2021
).
17.
Z.
Zhu
,
Q.
Sun
,
Z.
Zhang
,
J.
Dai
,
G.
Xing
,
S.
Li
,
X.
Huang
, and
W.
Huang
,
J. Mater. Chem. C
6
,
10121
10137
(
2018
).
18.
C.
Pi
,
W.
Chen
,
W.
Zou
,
S.
Yan
,
Z.
Liu
,
C.
Wang
,
Q.
Guo
,
J.
Qiu
,
X.
Yu
,
B.
Liu
, and
X.
Xu
,
J. Mater. Chem. C
9
,
11299
11305
(
2021
).
19.
C.
Lu
,
D.
Itanze
,
A.
Aragon
,
X.
Ma
,
H.
Li
,
K.
Ucer
,
C.
Hewitt
,
D.
Carroll
,
R.
Williams
,
Y.
Qiu
, and
S.
Geyer
,
Nanoscale
12
,
2987
(
2020
).
20.
V.
Balaram
,
U.
Rambabu
,
M. R. P.
Reddy
,
N. R.
Munirathnam
, and
S.
Chatterjee
,
Mapan
33
,
329
346
(
2018
).
21.
W.
Zhao
,
D.
Yang
,
Z.
Yang
, and
S. F.
Liu
,
Mater. Today Energy
5
,
205
213
(
2017
).
22.
J.
Zhou
,
Z.
Xia
,
M. S.
Molokeev
,
X.
Zhang
,
D.
Peng
, and
Q.
Liu
,
J. Mater. Chem. A
5
,
15031
15037
(
2017
).
23.
F.
Locardi
,
E.
Sartori
,
J.
Buha
,
J.
Zito
,
M.
Prato
,
V.
Pinchetti
,
M. L.
Zaffalon
,
M.
Ferretti
,
S.
Brovelli
, and
I.
Infante
,
ACS Energy Lett.
4
,
1976
1982
(
2019
).
24.
C.
Zuo
and
L.
Ding
,
Angew. Chem., Int. Ed.
56
,
6528
6532
(
2017
).
25.
K. M.
Boopathi
,
P.
Karuppuswamy
,
A.
Singh
,
C.
Hanmandlu
,
L.
Lin
,
S. A.
Abbas
,
C. C.
Chang
,
P. C.
Wang
,
G.
Li
, and
C. W.
Chu
,
J. Mat. Chem. A
5
,
20843
20850
(
2017
).
26.
S. A.
Adonin
,
L. A.
Frolova
,
M. N.
Sokolov
,
G. V.
Shilov
,
D. V.
Korchagin
,
V. P.
Fedin
,
S. M.
Aldoshin
,
K. J.
Stevenson
, and
P. A.
Troshin
,
Adv. Energy Mater.
8
,
1701140
(
2018
).
27.
Z.
Zheng
,
Q.
Hu
,
H.
Zhou
,
P.
Luo
,
A.
Nie
,
H.
Zhu
,
L.
Gan
,
F.
Zhuge
,
Y.
Ma
,
H.
Song
et al,
Nanoscale Horiz.
4
,
1372
1379
(
2019
).
28.
Z.
Imran
,
S. S.
Batool
,
H.
Jamil
,
M.
Usman
,
M.
Israr-Qadir
,
S. H.
Shah
,
S.
Jamil-Rana
,
M. A.
Rafiq
,
M. M.
Hasan
, and
M.
Willander
,
Ceram. Int.
39
,
457
462
(
2013
).
29.
W. D.
Lin
,
C. T.
Liao
,
T. C.
Chang
,
S. H.
Chen
, and
R. J.
Wu
,
Sens. Actuators, B: Chem.
209
,
555
561
(
2015
).
30.
M.
Zhang
,
S.
Wei
,
W.
Ren
, and
R.
Wu
,
Sensors
17
,
1310
(
2017
).
31.
Y.
Zhang
,
X.
Pan
,
Z.
Wang
,
Y.
Hu
,
X.
Zhou
,
Z.
Hu
, and
H.
Gu
,
RSC Adv.
5
,
20453
20458
(
2015
).
32.
Z.
Duan
,
M.
Xu
,
T.
Li
,
Y.
Zhang
, and
H.
Zou
,
Sens. Actuators, B: Chem.
258
,
527
534
(
2018
).
33.
M.
Yuan
,
Y.
Zhang
,
X.
Zheng
,
B.
Jiang
,
P.
Li
, and
S.
Deng
,
Sens. Actuators, B: Chem.
209
,
252
257
(
2015
).
34.
Y.
Huang
,
C.
Liang
,
D.
Wu
,
Q.
Chang
,
L.
Liu
,
H.
Liu
,
X.
Tang
,
Y.
He
, and
J.
Qiu
,
J. Phys. Chem. Lett.
12
,
3401
3409
(
2021
).
35.
Z.
Weng
,
J.
Qin
,
A. A.
Umar
,
J.
Wang
,
X.
Zhang
,
H.
Wang
,
X.
Cui
,
X.
Li
,
L.
Zheng
, and
Y.
Zhan
,
Adv. Funct. Mater.
29
,
1902234
(
2019
).
36.
Z.
Wu
,
J.
Yang
,
X.
Sun
,
Y.
Wu
,
L.
Wang
,
G.
Meng
,
D.
Kuang
,
X.
Guo
,
W.
Qu
,
B.
Du
et al,
Sens. Actuators, B: Chem.
337
,
129772
(
2021
).
37.
W.
Ye
,
Q.
Cao
,
X.
Cheng
,
C.
Yu
,
J.
He
, and
J.
Lu
,
J. Mater. Chem. A
8
,
17675
17682
(
2020
).
38.
K.
Ren
,
L.
Huang
,
S.
Yue
,
S.
Lu
,
K.
Liu
,
M.
Azam
,
Z.
Wang
,
Z.
Wei
,
S.
Qu
, and
Z.
Wang
,
J. Mater. Chem. C
5
,
2504
2508
(
2017
).
39.
J. H.
Anderson
and
G. A.
Parks
,
J. Phys. Chem.
72
,
3662
3668
(
1968
).
40.
N.
Zhang
,
Y. L.
Deng
,
Q. D.
Tai
,
B. R.
Cheng
,
L. B.
Zhao
,
Q. L.
Shen
,
R. X.
He
,
L.
Hong
,
W.
Liu
,
S.
Guo
et al,
Adv. Mater.
24
,
2756
2760
(
2012
).
41.
M.
Zhuo
,
T.
Yang
,
T.
Fu
, and
Q.
Li
,
RSC Adv.
5
,
68299
68304
(
2015
).
42.
M.
Gong
,
Y.
Li
,
Y.
Guo
,
X.
Lv
, and
X.
Dou
,
Sens. Actuators, B: Chem.
262
,
350
358
(
2018
).
43.
M.
Sheng
,
L. L.
Gu
,
R.
Kontic
,
Y.
Zhou
,
K. B.
Zheng
,
G. R.
Chen
,
X. L.
Mo
, and
G. R.
Patzke
,
Sens. Actuators, B: Chem.
166–167
,
642
649
(
2012
).

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