DOI: 10.1038/ncomms10379. Enhanced electronic properties in mesoporous TiO2 via lithium doping for high-efficiency perovskite solar cells

Enhanced electronic properties in mesoporous TiO2 via lithium doping for high-efficiency perovskite solar cells

10.1038/ncomms10379

Crossref journal-article

Springer Science and Business Media LLC

Nature Communications (297)

Abstract

AbstractPerovskite solar cells are one of the most promising photovoltaic technologies with their extraordinary progress in efficiency and the simple processes required to produce them. However, the frequent presence of a pronounced hysteresis in the current voltage characteristic of these devices arises concerns on the intrinsic stability of organo-metal halides, challenging the reliability of technology itself. Here, we show that n-doping of mesoporous TiO2 is accomplished by facile post treatment of the films with lithium salts. We demonstrate that the Li-doped TiO2 electrodes exhibit superior electronic properties, by reducing electronic trap states enabling faster electron transport. Perovskite solar cells prepared using the Li-doped films as scaffold to host the CH3NH3PbI3 light harvester produce substantially higher performances compared with undoped electrodes, improving the power conversion efficiency from 17 to over 19% with negligible hysteretic behaviour (lower than 0.3%).

Bibliography

Giordano, F., Abate, A., Correa Baena, J. P., Saliba, M., Matsui, T., Im, S. H., Zakeeruddin, S. M., Nazeeruddin, M. K., Hagfeldt, A., & Graetzel, M. (2016). Enhanced electronic properties in mesoporous TiO2 via lithium doping for high-efficiency perovskite solar cells. Nature Communications, 7(1).

Authors 10

Fabrizio Giordano (first)
Antonio Abate (additional)
Juan Pablo Correa Baena (additional)
Michael Saliba (additional)
Taisuke Matsui (additional)
Sang Hyuk Im (additional)
Shaik M. Zakeeruddin (additional)
Mohammad Khaja Nazeeruddin (additional)
Anders Hagfeldt (additional)
Michael Graetzel (additional)

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Dates

Type	When
Created	9 years, 7 months ago (Jan. 13, 2016, 6:44 a.m.)
Deposited	2 years, 7 months ago (Jan. 4, 2023, 6:53 a.m.)
Indexed	3 days, 18 hours ago (Aug. 30, 2025, 1:01 p.m.)
Issued	9 years, 7 months ago (Jan. 13, 2016)
Published	9 years, 7 months ago (Jan. 13, 2016)
Published Online	9 years, 7 months ago (Jan. 13, 2016)

Funders 0

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BibTeX

@article{Giordano_2016, title={Enhanced electronic properties in mesoporous TiO2 via lithium doping for high-efficiency perovskite solar cells}, volume={7}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/ncomms10379}, DOI={10.1038/ncomms10379}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Giordano, Fabrizio and Abate, Antonio and Correa Baena, Juan Pablo and Saliba, Michael and Matsui, Taisuke and Im, Sang Hyuk and Zakeeruddin, Shaik M. and Nazeeruddin, Mohammad Khaja and Hagfeldt, Anders and Graetzel, Michael}, year={2016}, month=jan }

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