TY - JOUR
T1 - Evaluation of Cd1-x Zn xS as electron transport layer in superstrate and inverted configurations of Sb2Se3solar cells with n-i-p structure
AU - Ayala-Mató, F.
AU - Vigil-Galán, O.
AU - Seuret-Jiménez, D.
AU - Courel, Maykel
AU - Fernández, Susana
N1 - Publisher Copyright:
© 2020 IOP Publishing Ltd.
PY - 2020/11/25
Y1 - 2020/11/25
N2 - In this work, we evaluate the role of the ternary compound, Cd1-x Zn x S, as an electron-transport layer (ETL) in the n-i-p structure of antimony selenide (Sb2Se3) solar cells. The incorporation of Zn reduces the amount of Cd and contributes to improving the power-conversion efficiency of the solar cell. On the other hand, the n-i-p structure makes it possible to overcome two issues that impair the efficiency of Sb2Se3 solar cells: the potential barrier due to the rear contact and the low hole concentration in the Sb2Se3 absorber material. In this paper, we present a theoretical work on Sb2Se3 solar cells using the SCAPS 1-D software. The theoretical analysis allows us to understand the impact of the semiconductor parameters on efficiency and also to find the optimal values for an optimized device. The optimal molar composition of the ternary compound is investigated in the superstrate and inverted configurations. Parameters such as the thickness, defect density, and the acceptor concentration of the Cd1-x Zn x S and Sb2Se3 layers are optimized. Also, we analyze the impact of interface-defect density at the hole-transport layer (HTL) (Sb2Se3) and the ETL (Sb2Se3). Following optimization, a power-conversion efficiency (η) of 14.29% is obtained using Cd0.4Zn0.6S as the ETL and Cu2O as the HTL in the superstrate configuration. This simulation process is expected to guide other experimentalists in the design and manufacture of solar cells.
AB - In this work, we evaluate the role of the ternary compound, Cd1-x Zn x S, as an electron-transport layer (ETL) in the n-i-p structure of antimony selenide (Sb2Se3) solar cells. The incorporation of Zn reduces the amount of Cd and contributes to improving the power-conversion efficiency of the solar cell. On the other hand, the n-i-p structure makes it possible to overcome two issues that impair the efficiency of Sb2Se3 solar cells: the potential barrier due to the rear contact and the low hole concentration in the Sb2Se3 absorber material. In this paper, we present a theoretical work on Sb2Se3 solar cells using the SCAPS 1-D software. The theoretical analysis allows us to understand the impact of the semiconductor parameters on efficiency and also to find the optimal values for an optimized device. The optimal molar composition of the ternary compound is investigated in the superstrate and inverted configurations. Parameters such as the thickness, defect density, and the acceptor concentration of the Cd1-x Zn x S and Sb2Se3 layers are optimized. Also, we analyze the impact of interface-defect density at the hole-transport layer (HTL) (Sb2Se3) and the ETL (Sb2Se3). Following optimization, a power-conversion efficiency (η) of 14.29% is obtained using Cd0.4Zn0.6S as the ETL and Cu2O as the HTL in the superstrate configuration. This simulation process is expected to guide other experimentalists in the design and manufacture of solar cells.
KW - CdZnS
KW - SbSesolar cell
KW - electron transport layer
KW - n-i-p structure
UR - http://www.scopus.com/inward/record.url?scp=85097321133&partnerID=8YFLogxK
U2 - 10.1088/1361-6641/abc7d0
DO - 10.1088/1361-6641/abc7d0
M3 - Artículo
AN - SCOPUS:85097321133
SN - 0268-1242
VL - 36
JO - Semiconductor Science and Technology
JF - Semiconductor Science and Technology
IS - 1
M1 - 015016
ER -