Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency

Ying Chiao Wang; Chun Hao Chiang; Chun Jen Su; Je Wei Chang; Chi Ying Lin; Chia Chun Wei; Shao Ku Huang; Hiroaki Maeda; Wen Bin Jian; U. Ser Jeng; Kazuhito Tsukagoshi; Chun Wei Chen; Hiroshi Nishihara

doi:10.1039/d3ta00505d

Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency

Ying Chiao Wang, Chun Hao Chiang, Chun Jen Su, Je Wei Chang, Chi Ying Lin, Chia Chun Wei, Shao Ku Huang, Hiroaki Maeda, Wen Bin Jian, U. Ser Jeng^*, Kazuhito Tsukagoshi^*, Chun Wei Chen^*, Hiroshi Nishihara^*

^*Corresponding author for this work

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

3 Scopus citations

Abstract

The high efficiency of precursor-to-perovskite conversion is one of the core factors in boosting the performance of perovskite solar cells (PSCs). Herein, we report a liquid/liquid interfacial synthesis of terpyridine-zinc(ii) (ZnTPY) coordination nanosheets (CONASHs), which can enhance PbI₂-based perovskite crystallization and thus the efficiency of PSCs. Ultrasonically fragmented ZnTPY CONASHs, rich in uncoordinated terpyridine moieties, caused multidentate chelation with PbI₂, resulting in a well-dispersed ZnTPY:PbI₂ complex. This metal-organic complex could act as a heterogeneous nucleation seed and facilitate the formation of a PbI₂-to-[PbI_6−x]⁴⁻ coordinated octahedral framework in a precursor solution of perovskite, thereby reducing the crystallization barrier of tetragonal CH₃NH₃PbI₃ perovskites and achieving a complete precursor-to-perovskite conversion. Consequently, ZnTPY-capped perovskite crystals had a long photoluminescence (PL) lifetime, which is attributed to the more passivated trap states associated with ZnTPY. The corresponding PSCs exhibited an optimal power conversion efficiency of 19.8% compared with 17.9% of the controlled device. The results prove that the performance of PSC families can be improved by dispersing PbI₂ in a solution with CONASHs for enhancing the PbI₂-to-perovskite conversion.

Original language	English
Pages (from-to)	7077-7084
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	11
Issue number	13
DOIs	https://doi.org/10.1039/d3ta00505d
State	Published - 1 Mar 2023

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Wang, Y. C., Chiang, C. H., Su, C. J., Chang, J. W., Lin, C. Y., Wei, C. C., Huang, S. K., Maeda, H., Jian, W. B., Jeng, U. S., Tsukagoshi, K., Chen, C. W., & Nishihara, H. (2023). Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency. Journal of Materials Chemistry A, 11(13), 7077-7084. https://doi.org/10.1039/d3ta00505d

@article{48e3d496074b49b993204d9dac57440e,

title = "Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency",

abstract = "The high efficiency of precursor-to-perovskite conversion is one of the core factors in boosting the performance of perovskite solar cells (PSCs). Herein, we report a liquid/liquid interfacial synthesis of terpyridine-zinc(ii) (ZnTPY) coordination nanosheets (CONASHs), which can enhance PbI2-based perovskite crystallization and thus the efficiency of PSCs. Ultrasonically fragmented ZnTPY CONASHs, rich in uncoordinated terpyridine moieties, caused multidentate chelation with PbI2, resulting in a well-dispersed ZnTPY:PbI2 complex. This metal-organic complex could act as a heterogeneous nucleation seed and facilitate the formation of a PbI2-to-[PbI6−x]4− coordinated octahedral framework in a precursor solution of perovskite, thereby reducing the crystallization barrier of tetragonal CH3NH3PbI3 perovskites and achieving a complete precursor-to-perovskite conversion. Consequently, ZnTPY-capped perovskite crystals had a long photoluminescence (PL) lifetime, which is attributed to the more passivated trap states associated with ZnTPY. The corresponding PSCs exhibited an optimal power conversion efficiency of 19.8% compared with 17.9% of the controlled device. The results prove that the performance of PSC families can be improved by dispersing PbI2 in a solution with CONASHs for enhancing the PbI2-to-perovskite conversion.",

author = "Wang, {Ying Chiao} and Chiang, {Chun Hao} and Su, {Chun Jen} and Chang, {Je Wei} and Lin, {Chi Ying} and Wei, {Chia Chun} and Huang, {Shao Ku} and Hiroaki Maeda and Jian, {Wen Bin} and Jeng, {U. Ser} and Kazuhito Tsukagoshi and Chen, {Chun Wei} and Hiroshi Nishihara",

note = "Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

year = "2023",

month = mar,

day = "1",

doi = "10.1039/d3ta00505d",

language = "English",

volume = "11",

pages = "7077--7084",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

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Wang, YC, Chiang, CH, Su, CJ, Chang, JW, Lin, CY, Wei, CC, Huang, SK, Maeda, H, Jian, WB, Jeng, US, Tsukagoshi, K, Chen, CW & Nishihara, H 2023, 'Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency', Journal of Materials Chemistry A, vol. 11, no. 13, pp. 7077-7084. https://doi.org/10.1039/d3ta00505d

TY - JOUR

T1 - Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency

AU - Wang, Ying Chiao

AU - Chiang, Chun Hao

AU - Su, Chun Jen

AU - Chang, Je Wei

AU - Lin, Chi Ying

AU - Wei, Chia Chun

AU - Huang, Shao Ku

AU - Maeda, Hiroaki

AU - Jian, Wen Bin

AU - Jeng, U. Ser

AU - Tsukagoshi, Kazuhito

AU - Chen, Chun Wei

AU - Nishihara, Hiroshi

PY - 2023/3/1

Y1 - 2023/3/1

N2 - The high efficiency of precursor-to-perovskite conversion is one of the core factors in boosting the performance of perovskite solar cells (PSCs). Herein, we report a liquid/liquid interfacial synthesis of terpyridine-zinc(ii) (ZnTPY) coordination nanosheets (CONASHs), which can enhance PbI2-based perovskite crystallization and thus the efficiency of PSCs. Ultrasonically fragmented ZnTPY CONASHs, rich in uncoordinated terpyridine moieties, caused multidentate chelation with PbI2, resulting in a well-dispersed ZnTPY:PbI2 complex. This metal-organic complex could act as a heterogeneous nucleation seed and facilitate the formation of a PbI2-to-[PbI6−x]4− coordinated octahedral framework in a precursor solution of perovskite, thereby reducing the crystallization barrier of tetragonal CH3NH3PbI3 perovskites and achieving a complete precursor-to-perovskite conversion. Consequently, ZnTPY-capped perovskite crystals had a long photoluminescence (PL) lifetime, which is attributed to the more passivated trap states associated with ZnTPY. The corresponding PSCs exhibited an optimal power conversion efficiency of 19.8% compared with 17.9% of the controlled device. The results prove that the performance of PSC families can be improved by dispersing PbI2 in a solution with CONASHs for enhancing the PbI2-to-perovskite conversion.

AB - The high efficiency of precursor-to-perovskite conversion is one of the core factors in boosting the performance of perovskite solar cells (PSCs). Herein, we report a liquid/liquid interfacial synthesis of terpyridine-zinc(ii) (ZnTPY) coordination nanosheets (CONASHs), which can enhance PbI2-based perovskite crystallization and thus the efficiency of PSCs. Ultrasonically fragmented ZnTPY CONASHs, rich in uncoordinated terpyridine moieties, caused multidentate chelation with PbI2, resulting in a well-dispersed ZnTPY:PbI2 complex. This metal-organic complex could act as a heterogeneous nucleation seed and facilitate the formation of a PbI2-to-[PbI6−x]4− coordinated octahedral framework in a precursor solution of perovskite, thereby reducing the crystallization barrier of tetragonal CH3NH3PbI3 perovskites and achieving a complete precursor-to-perovskite conversion. Consequently, ZnTPY-capped perovskite crystals had a long photoluminescence (PL) lifetime, which is attributed to the more passivated trap states associated with ZnTPY. The corresponding PSCs exhibited an optimal power conversion efficiency of 19.8% compared with 17.9% of the controlled device. The results prove that the performance of PSC families can be improved by dispersing PbI2 in a solution with CONASHs for enhancing the PbI2-to-perovskite conversion.

UR - http://www.scopus.com/inward/record.url?scp=85151038366&partnerID=8YFLogxK

U2 - 10.1039/d3ta00505d

DO - 10.1039/d3ta00505d

M3 - Article

AN - SCOPUS:85151038366

SN - 2050-7488

VL - 11

SP - 7077

EP - 7084

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 13

ER -

Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency

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