Efficiency and Stability Enhancement in Perovskite Solar Cells by Inserting Lithium-Neutralized Graphene Oxide as Electron Transporting Layer. Agresti, A., Pescetelli, S., Cinà, L., Konios, D., Kakavelakis, G., Kymakis, E., & Carlo, A. Advanced Functional Materials, 2016. abstract bibtex © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This work proposes a new perovskite solar cell structure by including lithium-neutralized graphene oxide (GO-Li) as the electron transporting layer (ETL) on top of the mesoporous TiO2 (m-TiO2) substrate. The modified work-function of GO after the intercalation of Li atoms (4.3 eV) exhibits a good energy matching with the TiO2 conduction band, leading to a significant enhancement of the electron injection from the perovskite to the m-TiO2. The resulting devices exhibit an improved short circuit current and fill factor and a reduced hysteresis. Furthermore, the GO-Li ETL partially passivates the oxygen vacancies/defects of m-TiO2 by resulting in an enhanced stability under prolonged 1 SUN irradiation.
@article{
title = {Efficiency and Stability Enhancement in Perovskite Solar Cells by Inserting Lithium-Neutralized Graphene Oxide as Electron Transporting Layer},
type = {article},
year = {2016},
identifiers = {[object Object]},
keywords = {electron transport materials (ETM),hybrid organic-inorganic perovskite solar cells,lithium-neutralized graphene oxide,photovoltaic devices},
volume = {26},
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created = {2020-09-22T06:58:35.978Z},
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abstract = {© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This work proposes a new perovskite solar cell structure by including lithium-neutralized graphene oxide (GO-Li) as the electron transporting layer (ETL) on top of the mesoporous TiO2 (m-TiO2) substrate. The modified work-function of GO after the intercalation of Li atoms (4.3 eV) exhibits a good energy matching with the TiO2 conduction band, leading to a significant enhancement of the electron injection from the perovskite to the m-TiO2. The resulting devices exhibit an improved short circuit current and fill factor and a reduced hysteresis. Furthermore, the GO-Li ETL partially passivates the oxygen vacancies/defects of m-TiO2 by resulting in an enhanced stability under prolonged 1 SUN irradiation.},
bibtype = {article},
author = {Agresti, A. and Pescetelli, S. and Cinà, L. and Konios, D. and Kakavelakis, G. and Kymakis, E. and Carlo, A.D.},
journal = {Advanced Functional Materials},
number = {16}
}
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