TY - JOUR
T1 - Relationship between Lattice Strain and Efficiency for Sn-Perovskite Solar Cells
AU - Nishimura, Kohei
AU - Hirotani, Daisuke
AU - Kamarudin, Muhammad Akmal
AU - Shen, Qing
AU - Toyoda, Taro
AU - Iikubo, Satoshi
AU - Minemoto, Takashi
AU - Yoshino, Kenji
AU - Hayase, Shuzi
N1 - Funding Information:
This research was supported by JST Mirai Program. (JPMJMI17EA)
Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/8/28
Y1 - 2019/8/28
N2 - In the composition of Q0.1(FA0.75MA0.25)0.9SnI3, Q is replaced with Na+, K+, Cs+, ethylammonium+ (EA+), and butylammonium+ (BA+), respectively, and the relationship between actually measured lattice strain and photovoltaic performances is discussed. The lattice strain evaluated by the Williamson-hall plot of X-ray diffraction data decreased as the tolerance factor was close to one. The efficiency of the Sn-perovskite solar cell was enhanced as the lattice strain decreased. Among them, EA0.1(FA0.75MA0.25)0.9SnI3 having lowest lattice strain gave the best result of 5.41%. Because the carrier mobility increased with a decrease in the lattice strain, these lattice strains would disturb carrier mobility and decrease the solar cell efficiency. Finally, the results that the efficiency of the SnGe-perovskite solar cells was gradually enhanced from 6.42 to 7.60% during storage, was explained by the lattice strain relaxation during the storage.
AB - In the composition of Q0.1(FA0.75MA0.25)0.9SnI3, Q is replaced with Na+, K+, Cs+, ethylammonium+ (EA+), and butylammonium+ (BA+), respectively, and the relationship between actually measured lattice strain and photovoltaic performances is discussed. The lattice strain evaluated by the Williamson-hall plot of X-ray diffraction data decreased as the tolerance factor was close to one. The efficiency of the Sn-perovskite solar cell was enhanced as the lattice strain decreased. Among them, EA0.1(FA0.75MA0.25)0.9SnI3 having lowest lattice strain gave the best result of 5.41%. Because the carrier mobility increased with a decrease in the lattice strain, these lattice strains would disturb carrier mobility and decrease the solar cell efficiency. Finally, the results that the efficiency of the SnGe-perovskite solar cells was gradually enhanced from 6.42 to 7.60% during storage, was explained by the lattice strain relaxation during the storage.
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U2 - 10.1021/acsami.9b09564
DO - 10.1021/acsami.9b09564
M3 - Article
C2 - 31385691
AN - SCOPUS:85071661452
SN - 1944-8244
VL - 11
SP - 31105
EP - 31110
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 34
ER -
