Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

Jun Peng; Daniel Walter; Yuhao Ren; Mike Tebyetekerwa; Yiliang Wu; The Duong; Qiaoling Lin; Juntao Li; Teng Lu; Md Arafat Mahmud; Olivier Lee Cheong Lem; Shenyou Zhao; Wenzhu Liu; Yun Liu; Heping Shen; Li Li; Felipe Kremer; Hieu T. Nguyen; Duk Yong Choi; Klaus J. Weber; Kylie R. Catchpole; Thomas P. White

doi:10.1126/science.abb8687

Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

Jun Peng, Daniel Walter, Yuhao Ren, Mike Tebyetekerwa, Yiliang Wu, The Duong, Qiaoling Lin, Juntao Li^*, Teng Lu, Md Arafat Mahmud, Olivier Lee Cheong Lem, Shenyou Zhao, Wenzhu Liu, Yun Liu, Heping Shen, Li Li, Felipe Kremer, Hieu T. Nguyen, Duk Yong Choi, Klaus J. WeberKylie R. Catchpole^*, Thomas P. White^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

281 Citations (Scopus)

Abstract

Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells when inserted at the perovskite-charge transport layer interfaces. Unfortunately, many such layers are poor conductors, leading to a trade-off between passivation quality (voltage) and series resistance (fill factor, FF). Here, we introduce a nanopatterned electron transport layer that overcomes this trade-off by modifying the spatial distribution of the passivation layer to form nanoscale localized charge transport pathways through an otherwise passivated interface, thereby providing both effective passivation and excellent charge extraction. By combining the nanopatterned electron transport layer with a dopant-free hole transport layer, we achieved a certified power conversion efficiency of 21.6% for a 1-square-centimeter cell with FF of 0.839, and demonstrate an encapsulated cell that retains ∼91.7% of its initial efficiency after 1000 hours of damp heat exposure.

Original language	English
Pages (from-to)	390-395
Number of pages	6
Journal	Science
Volume	371
Issue number	6527
DOIs	https://doi.org/10.1126/science.abb8687
Publication status	Published - 22 Jan 2021

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Peng, J., Walter, D., Ren, Y., Tebyetekerwa, M., Wu, Y., Duong, T., Lin, Q., Li, J., Lu, T., Mahmud, M. A., Lem, O. L. C., Zhao, S., Liu, W., Liu, Y., Shen, H., Li, L., Kremer, F., Nguyen, H. T., Choi, D. Y., ... White, T. P. (2021). Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells. Science, 371(6527), 390-395. https://doi.org/10.1126/science.abb8687

@article{dec3b6458174441a97bfb889328a1d63,

title = "Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells",

abstract = "Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells when inserted at the perovskite-charge transport layer interfaces. Unfortunately, many such layers are poor conductors, leading to a trade-off between passivation quality (voltage) and series resistance (fill factor, FF). Here, we introduce a nanopatterned electron transport layer that overcomes this trade-off by modifying the spatial distribution of the passivation layer to form nanoscale localized charge transport pathways through an otherwise passivated interface, thereby providing both effective passivation and excellent charge extraction. By combining the nanopatterned electron transport layer with a dopant-free hole transport layer, we achieved a certified power conversion efficiency of 21.6% for a 1-square-centimeter cell with FF of 0.839, and demonstrate an encapsulated cell that retains ∼91.7% of its initial efficiency after 1000 hours of damp heat exposure.",

author = "Jun Peng and Daniel Walter and Yuhao Ren and Mike Tebyetekerwa and Yiliang Wu and The Duong and Qiaoling Lin and Juntao Li and Teng Lu and Mahmud, {Md Arafat} and Lem, {Olivier Lee Cheong} and Shenyou Zhao and Wenzhu Liu and Yun Liu and Heping Shen and Li Li and Felipe Kremer and Nguyen, {Hieu T.} and Choi, {Duk Yong} and Weber, {Klaus J.} and Catchpole, {Kylie R.} and White, {Thomas P.}",

year = "2021",

month = jan,

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doi = "10.1126/science.abb8687",

language = "English",

volume = "371",

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Peng, J, Walter, D, Ren, Y, Tebyetekerwa, M, Wu, Y, Duong, T, Lin, Q, Li, J, Lu, T, Mahmud, MA, Lem, OLC, Zhao, S, Liu, W, Liu, Y , Shen, H, Li, L, Kremer, F, Nguyen, HT, Choi, DY , Weber, KJ , Catchpole, KR & White, TP 2021, 'Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells', Science, vol. 371, no. 6527, pp. 390-395. https://doi.org/10.1126/science.abb8687

TY - JOUR

T1 - Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

AU - Peng, Jun

AU - Walter, Daniel

AU - Ren, Yuhao

AU - Tebyetekerwa, Mike

AU - Wu, Yiliang

AU - Duong, The

AU - Lin, Qiaoling

AU - Li, Juntao

AU - Lu, Teng

AU - Mahmud, Md Arafat

AU - Lem, Olivier Lee Cheong

AU - Zhao, Shenyou

AU - Liu, Wenzhu

AU - Liu, Yun

AU - Shen, Heping

AU - Li, Li

AU - Kremer, Felipe

AU - Nguyen, Hieu T.

AU - Choi, Duk Yong

AU - Weber, Klaus J.

AU - Catchpole, Kylie R.

AU - White, Thomas P.

PY - 2021/1/22

Y1 - 2021/1/22

N2 - Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells when inserted at the perovskite-charge transport layer interfaces. Unfortunately, many such layers are poor conductors, leading to a trade-off between passivation quality (voltage) and series resistance (fill factor, FF). Here, we introduce a nanopatterned electron transport layer that overcomes this trade-off by modifying the spatial distribution of the passivation layer to form nanoscale localized charge transport pathways through an otherwise passivated interface, thereby providing both effective passivation and excellent charge extraction. By combining the nanopatterned electron transport layer with a dopant-free hole transport layer, we achieved a certified power conversion efficiency of 21.6% for a 1-square-centimeter cell with FF of 0.839, and demonstrate an encapsulated cell that retains ∼91.7% of its initial efficiency after 1000 hours of damp heat exposure.

AB - Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells when inserted at the perovskite-charge transport layer interfaces. Unfortunately, many such layers are poor conductors, leading to a trade-off between passivation quality (voltage) and series resistance (fill factor, FF). Here, we introduce a nanopatterned electron transport layer that overcomes this trade-off by modifying the spatial distribution of the passivation layer to form nanoscale localized charge transport pathways through an otherwise passivated interface, thereby providing both effective passivation and excellent charge extraction. By combining the nanopatterned electron transport layer with a dopant-free hole transport layer, we achieved a certified power conversion efficiency of 21.6% for a 1-square-centimeter cell with FF of 0.839, and demonstrate an encapsulated cell that retains ∼91.7% of its initial efficiency after 1000 hours of damp heat exposure.

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U2 - 10.1126/science.abb8687

DO - 10.1126/science.abb8687

M3 - Article

SN - 0036-8075

VL - 371

SP - 390

EP - 395

JO - Science

JF - Science

IS - 6527

ER -

Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

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