TY - JOUR
T1 - W-doped TiO2 as electron transport layer for high performance solution-processed perovskite solar cells
AU - Wang, Haibin
AU - Zhao, Chun
AU - Yin, Li
AU - Li, Xinjian
AU - Tu, Xin
AU - Lim, Eng Gee
AU - Liu, Yina
AU - Zhao, Ce Zhou
N1 - Funding Information:
This research was funded in part by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China Program (19KJB510059), the Suzhou Science and Technology Development Planning Project: Key Industrial Technology Innovation (SYG201924), and the Key Program Special Fund in XJTLU (KSF-P-02, KSF-T-03, KSF-A-04, KSF-A-05, KSF-A-07).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/10/15
Y1 - 2021/10/15
N2 - In this work, W-doped TiO2, was successfully fabricated, as electron transport layer (ETL) in perovskite solar cells (PSCs) via low-temperature solution-processed method, whose outstanding performances were verified. The experimental results reveal that, W6+ was doped into the TiO2 lattice successfully. The improved ETL exhibit significantly improved on conductivity, transport and extraction of photo-generated carriers and less trap-state density as compared with the pristine TiO2 films. Meanwhile, strengthening the velocity of carrier and collection of sufficient charge can efficiently increase short-circuit current (JSC) which favor an improved fill factor (FF) and a higher power conversion efficiency (PCE). Our optimized cation–anion-mixed PSC based on W-doped TiO2 has achieved an efficiency of 18.85%. This improved PCE is almost 28.1% higher than that of the pure TiO2. This study provides a promising approach to design metal-doped TiO2 for fabricating high-performance perovskite solar cells.
AB - In this work, W-doped TiO2, was successfully fabricated, as electron transport layer (ETL) in perovskite solar cells (PSCs) via low-temperature solution-processed method, whose outstanding performances were verified. The experimental results reveal that, W6+ was doped into the TiO2 lattice successfully. The improved ETL exhibit significantly improved on conductivity, transport and extraction of photo-generated carriers and less trap-state density as compared with the pristine TiO2 films. Meanwhile, strengthening the velocity of carrier and collection of sufficient charge can efficiently increase short-circuit current (JSC) which favor an improved fill factor (FF) and a higher power conversion efficiency (PCE). Our optimized cation–anion-mixed PSC based on W-doped TiO2 has achieved an efficiency of 18.85%. This improved PCE is almost 28.1% higher than that of the pure TiO2. This study provides a promising approach to design metal-doped TiO2 for fabricating high-performance perovskite solar cells.
KW - Electron transport layer
KW - Low temperature
KW - Perovskite solar cells
KW - W-doped TiO
UR - http://www.scopus.com/inward/record.url?scp=85107747040&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2021.150298
DO - 10.1016/j.apsusc.2021.150298
M3 - Article
AN - SCOPUS:85107747040
SN - 0169-4332
VL - 563
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 150298
ER -