Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells

Research output: Contribution to journalArticleScientificpeer-review

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Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells. / Masood, Muhammad Talha; Weinberger, Christian; Qudsia, S.; Rosqvist, Emil; Sandberg, Oskar J.; Nyman, Mathias; Sandén, S.; Vivo, P.; Aitola, Kerttu; Lund, Peter D.; Österbacka, Ronald; Smått, Jan Henrik.

In: Thin Solid Films, Vol. 686, 137418, 30.09.2019, p. 1-7.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Masood, MT, Weinberger, C, Qudsia, S, Rosqvist, E, Sandberg, OJ, Nyman, M, Sandén, S, Vivo, P, Aitola, K, Lund, PD, Österbacka, R & Smått, JH 2019, 'Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells', Thin Solid Films, vol. 686, 137418, pp. 1-7. https://doi.org/10.1016/j.tsf.2019.137418

APA

Masood, M. T., Weinberger, C., Qudsia, S., Rosqvist, E., Sandberg, O. J., Nyman, M., ... Smått, J. H. (2019). Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells. Thin Solid Films, 686, 1-7. [137418]. https://doi.org/10.1016/j.tsf.2019.137418

Vancouver

Masood MT, Weinberger C, Qudsia S, Rosqvist E, Sandberg OJ, Nyman M et al. Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells. Thin Solid Films. 2019 Sep 30;686:1-7. 137418. https://doi.org/10.1016/j.tsf.2019.137418

Author

Masood, Muhammad Talha ; Weinberger, Christian ; Qudsia, S. ; Rosqvist, Emil ; Sandberg, Oskar J. ; Nyman, Mathias ; Sandén, S. ; Vivo, P. ; Aitola, Kerttu ; Lund, Peter D. ; Österbacka, Ronald ; Smått, Jan Henrik. / Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells. In: Thin Solid Films. 2019 ; Vol. 686. pp. 1-7.

Bibtex - Download

@article{f110b7c588644333b439b66a29bbb6ef,
title = "Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells",
abstract = "Perovskite solar cells with record efficiencies already above 24{\%} are a highly promising clean energy technology. However, the reproducibility in their fabrication has proven to be challenging and needs more attention. Here we demonstrate that surface activation of the mesoscopic titanium dioxide (TiO2) scaffold, utilized in the two-step perovskite synthesis process, significantly affects the final device performance. Irradiating the mesostructured substrate with ultraviolet (UV) light prior to lead iodide (PbI2) deposition has a positive effect on the short-circuit current density and on the overall device performance (leading to a >20{\%} increase in efficiency in our devices). As most of the UV light is absorbed in the topmost TiO2 layer, the interior of the scaffold remains less activated. This results in a sparsely packed PbI2 structure that facilitates an efficient conversion to the perovskite, while the activated topmost surface improves the perovskite capping layer. On the contrary, plasma treatment of the scaffold also activates the interior parts of the scaffold, which leads to a dense PbI2 structure that hampers the conversion and causing a >25{\%} efficiency drop. We show that also minor changes in the surface properties of the mesoporous TiO2 scaffold can affect the device performance, which could explain some of the large efficiency variations observed between laboratories.",
keywords = "Lead iodide-to-perovskite conversion, Mesoscopic titanium dioxide scaffold, Perovskite solar cells, Plasma treatment, Surface activation, Ultraviolet treatment",
author = "Masood, {Muhammad Talha} and Christian Weinberger and S. Qudsia and Emil Rosqvist and Sandberg, {Oskar J.} and Mathias Nyman and S. Sand{\'e}n and P. Vivo and Kerttu Aitola and Lund, {Peter D.} and Ronald {\"O}sterbacka and Sm{\aa}tt, {Jan Henrik}",
year = "2019",
month = "9",
day = "30",
doi = "10.1016/j.tsf.2019.137418",
language = "English",
volume = "686",
pages = "1--7",
journal = "Thin Solid Films",
issn = "0040-6090",
publisher = "Elsevier Science",

}

RIS - Download

TY - JOUR

T1 - Influence of titanium dioxide surface activation on the performance of mesoscopic perovskite solar cells

AU - Masood, Muhammad Talha

AU - Weinberger, Christian

AU - Qudsia, S.

AU - Rosqvist, Emil

AU - Sandberg, Oskar J.

AU - Nyman, Mathias

AU - Sandén, S.

AU - Vivo, P.

AU - Aitola, Kerttu

AU - Lund, Peter D.

AU - Österbacka, Ronald

AU - Smått, Jan Henrik

PY - 2019/9/30

Y1 - 2019/9/30

N2 - Perovskite solar cells with record efficiencies already above 24% are a highly promising clean energy technology. However, the reproducibility in their fabrication has proven to be challenging and needs more attention. Here we demonstrate that surface activation of the mesoscopic titanium dioxide (TiO2) scaffold, utilized in the two-step perovskite synthesis process, significantly affects the final device performance. Irradiating the mesostructured substrate with ultraviolet (UV) light prior to lead iodide (PbI2) deposition has a positive effect on the short-circuit current density and on the overall device performance (leading to a >20% increase in efficiency in our devices). As most of the UV light is absorbed in the topmost TiO2 layer, the interior of the scaffold remains less activated. This results in a sparsely packed PbI2 structure that facilitates an efficient conversion to the perovskite, while the activated topmost surface improves the perovskite capping layer. On the contrary, plasma treatment of the scaffold also activates the interior parts of the scaffold, which leads to a dense PbI2 structure that hampers the conversion and causing a >25% efficiency drop. We show that also minor changes in the surface properties of the mesoporous TiO2 scaffold can affect the device performance, which could explain some of the large efficiency variations observed between laboratories.

AB - Perovskite solar cells with record efficiencies already above 24% are a highly promising clean energy technology. However, the reproducibility in their fabrication has proven to be challenging and needs more attention. Here we demonstrate that surface activation of the mesoscopic titanium dioxide (TiO2) scaffold, utilized in the two-step perovskite synthesis process, significantly affects the final device performance. Irradiating the mesostructured substrate with ultraviolet (UV) light prior to lead iodide (PbI2) deposition has a positive effect on the short-circuit current density and on the overall device performance (leading to a >20% increase in efficiency in our devices). As most of the UV light is absorbed in the topmost TiO2 layer, the interior of the scaffold remains less activated. This results in a sparsely packed PbI2 structure that facilitates an efficient conversion to the perovskite, while the activated topmost surface improves the perovskite capping layer. On the contrary, plasma treatment of the scaffold also activates the interior parts of the scaffold, which leads to a dense PbI2 structure that hampers the conversion and causing a >25% efficiency drop. We show that also minor changes in the surface properties of the mesoporous TiO2 scaffold can affect the device performance, which could explain some of the large efficiency variations observed between laboratories.

KW - Lead iodide-to-perovskite conversion

KW - Mesoscopic titanium dioxide scaffold

KW - Perovskite solar cells

KW - Plasma treatment

KW - Surface activation

KW - Ultraviolet treatment

UR - http://www.scopus.com/inward/record.url?scp=85069637367&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2019.137418

DO - 10.1016/j.tsf.2019.137418

M3 - Article

AN - SCOPUS:85069637367

VL - 686

SP - 1

EP - 7

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

M1 - 137418

ER -

ID: 36035349