Unveiling Ultrafast Carrier Extraction in Highly Efficient 2D/3D Bilayer Perovskite Solar Cells

Mriganka Singh; I-Hung Ho; Anupriya Singh; Ching-Wen Chan; Jing-Wei Yang; Tzung-Fang Guo; Hyeyoung Ahn; Vincent Tung; Chih Wei Chu; Yu-Jung Lu

doi:10.1021/acsphotonics.2c00982

Unveiling Ultrafast Carrier Extraction in Highly Efficient 2D/3D Bilayer Perovskite Solar Cells

Mriganka Singh, I-Hung Ho, Anupriya Singh, Ching-Wen Chan, Jing-Wei Yang, Tzung-Fang Guo, Hyeyoung Ahn, Vincent Tung, Chih Wei Chu, Yu-Jung Lu

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

7 Scopus citations

Abstract

The development of multidimensional heterostructure (2D/3D) lead halide perovskites has emerged as an effective approach to enhancing the efficiency and long-term stability of perovskite solar cells (PSCs). However, a fundamental understanding of the working mechanisms, such as carrier extraction, and carrier transfer dynamics in the multidimensional perovskites heterostructures remains elusive. Here, we observe the ultrafast carrier extraction in highly efficient 2D/3D bilayer PSCs (power conversion efficiency of 21.12%) via femtosecond time-resolved pump–probe transient absorption spectroscopy (TAS). Notably, the formation of quasi-equilibrium states resulting in a subband absorption feature with an ultrafast lifetime of 440 fs was observed, and this feature is found only in 2D/3D perovskite heterostructure. The short-lived feature gives rise to the local electric-field-induced electroabsorption, resulting in an enhanced power conversion efficiency in 2D/3D PSCs. These findings can help comprehend the advanced working mechanism of highly efficient solar cells and other 2D/3D bilayer perovskite-based optoelectronic devices.

Original language	English (US)
Journal	ACS Photonics
DOIs	https://doi.org/10.1021/acsphotonics.2c00982
State	Published - Oct 21 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-10-25
Acknowledged KAUST grant number(s): OSR-2018-CARF/CCF-3079
Acknowledgements: The authors gratefully acknowledge the financial support of the National Science and Technology Council, Taiwan (NSTC 109-2112-M-001-043-MY3 (Y.J.L.), NSTC 110-2124-M-001-008-MY3 (Y.J.L.), NSTC 110-2124-MA49-009-MY3 (H.A.), and NSTC 111-2221-E-001-006 (C.W.C.)). This work was also supported by the Academia Sinica, Taiwan (AS-CDA-108-M08). V.T. is indebted to the support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research under Award (OSR-2018-CARF/CCF-3079). The data sets analyzed in this study are available from the corresponding author upon reasonable request.

ASJC Scopus subject areas

Biotechnology
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1021/acsphotonics.2c00982

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@article{ce20fcba1c0140119b808e1d10e940eb,

title = "Unveiling Ultrafast Carrier Extraction in Highly Efficient 2D/3D Bilayer Perovskite Solar Cells",

abstract = "The development of multidimensional heterostructure (2D/3D) lead halide perovskites has emerged as an effective approach to enhancing the efficiency and long-term stability of perovskite solar cells (PSCs). However, a fundamental understanding of the working mechanisms, such as carrier extraction, and carrier transfer dynamics in the multidimensional perovskites heterostructures remains elusive. Here, we observe the ultrafast carrier extraction in highly efficient 2D/3D bilayer PSCs (power conversion efficiency of 21.12%) via femtosecond time-resolved pump–probe transient absorption spectroscopy (TAS). Notably, the formation of quasi-equilibrium states resulting in a subband absorption feature with an ultrafast lifetime of 440 fs was observed, and this feature is found only in 2D/3D perovskite heterostructure. The short-lived feature gives rise to the local electric-field-induced electroabsorption, resulting in an enhanced power conversion efficiency in 2D/3D PSCs. These findings can help comprehend the advanced working mechanism of highly efficient solar cells and other 2D/3D bilayer perovskite-based optoelectronic devices.",

author = "Mriganka Singh and I-Hung Ho and Anupriya Singh and Ching-Wen Chan and Jing-Wei Yang and Tzung-Fang Guo and Hyeyoung Ahn and Vincent Tung and Chu, {Chih Wei} and Yu-Jung Lu",

note = "KAUST Repository Item: Exported on 2022-10-25 Acknowledged KAUST grant number(s): OSR-2018-CARF/CCF-3079 Acknowledgements: The authors gratefully acknowledge the financial support of the National Science and Technology Council, Taiwan (NSTC 109-2112-M-001-043-MY3 (Y.J.L.), NSTC 110-2124-M-001-008-MY3 (Y.J.L.), NSTC 110-2124-MA49-009-MY3 (H.A.), and NSTC 111-2221-E-001-006 (C.W.C.)). This work was also supported by the Academia Sinica, Taiwan (AS-CDA-108-M08). V.T. is indebted to the support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research under Award (OSR-2018-CARF/CCF-3079). The data sets analyzed in this study are available from the corresponding author upon reasonable request.",

year = "2022",

month = oct,

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doi = "10.1021/acsphotonics.2c00982",

language = "English (US)",

journal = "ACS Photonics",

issn = "2330-4022",

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T1 - Unveiling Ultrafast Carrier Extraction in Highly Efficient 2D/3D Bilayer Perovskite Solar Cells

AU - Singh, Mriganka

AU - Ho, I-Hung

AU - Singh, Anupriya

AU - Chan, Ching-Wen

AU - Yang, Jing-Wei

AU - Guo, Tzung-Fang

AU - Ahn, Hyeyoung

AU - Tung, Vincent

AU - Chu, Chih Wei

AU - Lu, Yu-Jung

N1 - KAUST Repository Item: Exported on 2022-10-25 Acknowledged KAUST grant number(s): OSR-2018-CARF/CCF-3079 Acknowledgements: The authors gratefully acknowledge the financial support of the National Science and Technology Council, Taiwan (NSTC 109-2112-M-001-043-MY3 (Y.J.L.), NSTC 110-2124-M-001-008-MY3 (Y.J.L.), NSTC 110-2124-MA49-009-MY3 (H.A.), and NSTC 111-2221-E-001-006 (C.W.C.)). This work was also supported by the Academia Sinica, Taiwan (AS-CDA-108-M08). V.T. is indebted to the support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research under Award (OSR-2018-CARF/CCF-3079). The data sets analyzed in this study are available from the corresponding author upon reasonable request.

PY - 2022/10/21

Y1 - 2022/10/21

N2 - The development of multidimensional heterostructure (2D/3D) lead halide perovskites has emerged as an effective approach to enhancing the efficiency and long-term stability of perovskite solar cells (PSCs). However, a fundamental understanding of the working mechanisms, such as carrier extraction, and carrier transfer dynamics in the multidimensional perovskites heterostructures remains elusive. Here, we observe the ultrafast carrier extraction in highly efficient 2D/3D bilayer PSCs (power conversion efficiency of 21.12%) via femtosecond time-resolved pump–probe transient absorption spectroscopy (TAS). Notably, the formation of quasi-equilibrium states resulting in a subband absorption feature with an ultrafast lifetime of 440 fs was observed, and this feature is found only in 2D/3D perovskite heterostructure. The short-lived feature gives rise to the local electric-field-induced electroabsorption, resulting in an enhanced power conversion efficiency in 2D/3D PSCs. These findings can help comprehend the advanced working mechanism of highly efficient solar cells and other 2D/3D bilayer perovskite-based optoelectronic devices.

AB - The development of multidimensional heterostructure (2D/3D) lead halide perovskites has emerged as an effective approach to enhancing the efficiency and long-term stability of perovskite solar cells (PSCs). However, a fundamental understanding of the working mechanisms, such as carrier extraction, and carrier transfer dynamics in the multidimensional perovskites heterostructures remains elusive. Here, we observe the ultrafast carrier extraction in highly efficient 2D/3D bilayer PSCs (power conversion efficiency of 21.12%) via femtosecond time-resolved pump–probe transient absorption spectroscopy (TAS). Notably, the formation of quasi-equilibrium states resulting in a subband absorption feature with an ultrafast lifetime of 440 fs was observed, and this feature is found only in 2D/3D perovskite heterostructure. The short-lived feature gives rise to the local electric-field-induced electroabsorption, resulting in an enhanced power conversion efficiency in 2D/3D PSCs. These findings can help comprehend the advanced working mechanism of highly efficient solar cells and other 2D/3D bilayer perovskite-based optoelectronic devices.

UR - http://hdl.handle.net/10754/685125

UR - https://pubs.acs.org/doi/10.1021/acsphotonics.2c00982

U2 - 10.1021/acsphotonics.2c00982

DO - 10.1021/acsphotonics.2c00982

M3 - Article

SN - 2330-4022

JO - ACS Photonics

JF - ACS Photonics

ER -

Unveiling Ultrafast Carrier Extraction in Highly Efficient 2D/3D Bilayer Perovskite Solar Cells

Abstract

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