Functional ZnO/TiO2 Bilayer as Electron Transport Material for Solution-Processed Sb2S3 Solar Cells
Por:
Baron Jaimes, Agustin, Jaramillo-Quintero, Oscar Andres, Miranda Gamboa, Ramses Alejandro, Medina-Flores, Ariosto, RINCON, MARINA ELIZABETH
Publicada:
1 mar 2021
Resumen:
Electron transport materials (ETMs) are considered a keystone component
of third-generation solar cells. Among the alternative ETM, metal oxide
bilayers have attracted increasing attention due to their easy
processing and tunability of cascade energy alignment. Herein, a metal
oxide bilayer that combines ZnO and TiO2 compact films (ZnO/TiO2) is
implemented as ETM for solution-processed Sb2S3 planar solar cells. The
bilayer ETM achieves the highest photovoltaic performance when compared
with devices based on single ETM. Thus, the optimized device based on
ZnO/TiO2 ETM yields a champion efficiency of 5.08% with an open-circuit
voltage of 0.58 V and a current density of 16.17 mA cm(-2). Using
surface photovoltage, electrochemical impedance spectroscopy, and
current density-voltage analyses, it is demonstrated that the use of
ZnO/TiO2 promotes charge injection, decreases series resistance and
shutting paths, and leads to the reduction of charge recombination at
the ETM/Sb2S3 interface.
Filiaciones:
Baron Jaimes, Agustin:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Privada Xochicalco S-N, Temixco 62580, Mor, Mexico
Jaramillo-Quintero, Oscar Andres:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Privada Xochicalco S-N, Temixco 62580, Mor, Mexico
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Catedrat CONACYT, Privada Xochicalco S-N, Temixco 62580, Mor, Mexico
Miranda Gamboa, Ramses Alejandro:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Privada Xochicalco S-N, Temixco 62580, Mor, Mexico
Medina-Flores, Ariosto:
Univ Michoacana, Inst Invest Metalurgia & Mat, Ave Francisco J Mujica S-N, Morelia 58030, Michoacan, Mexico
RINCON, MARINA ELIZABETH:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Privada Xochicalco S-N, Temixco 62580, Mor, Mexico
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