Enhanced band-filling effect in halide perovskites via hydrophobic conductive linkers

Jung Hwan Lee; Taehee Kim; Seulki Song; Yongchul Kim; Sooeun Shin; Sun Je Lee; Younghoon Kim; Young Jin Choi; Sungsoon Kim; Kan Zhang; Jeong Ho Cho; Hyunjung Shin; Geunsik Lee; Nam Gyu Park; Dongho Kim; Jangwon Seo; Jong Hyeok Park

doi:10.1016/j.xcrp.2022.100800

Enhanced band-filling effect in halide perovskites via hydrophobic conductive linkers

Jung Hwan Lee, Taehee Kim, Seulki Song, Yongchul Kim, Sooeun Shin, Sun Je Lee, Younghoon Kim, Young Jin Choi, Sungsoon Kim, Kan Zhang, Jeong Ho Cho, Hyunjung Shin, Geunsik Lee, Nam Gyu Park, Dongho Kim, Jangwon Seo, Jong Hyeok Park

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

6 Scopus citations

Abstract

To approach the theoretical efficiency of perovskite solar cells (PSCs), the defects in perovskites should be managed. Among different types of defects, halide vacancies easily form on the surface of perovskite grains (PGs), hindering perovskite stability and the charge-transport process by trapping charge carriers. In this work, oxidized black phosphorus quantum dots (O-BPQDs) are incorporated into a perovskite to resolve these issues. Oxygen atoms of the O-BPQDs interact with uncoordinated Pb (halide vacancies), forming grain interconnections. These interactions reduce halide vacancies and suppress the overall recombination kinetics. Along with defect reduction, the O-BPQDs offer an efficient charge-transport channel across individual PGs. We achieve a best power-conversion efficiency (PCE) of 22.34% for SnO₂-based PSCs and of 23.1% for TiO₂-based PSCs. These PSCs exhibit moisture stability in a relative humidity (RH) 40% environment comparable to 3D/2D perovskites. Our strategy provides practical applicability and versatility for PSCs to approach the theoretical PCE value.

Original language	English
Article number	100800
Journal	Cell Reports Physical Science
Volume	3
Issue number	3
DOIs	https://doi.org/10.1016/j.xcrp.2022.100800
State	Published - Mar 16 2022
Externally published	Yes

Keywords

band filling
black phosphorus quantum dots
efficient charge transport
grain linking
halide vacancy passivation
humidity resistance
perovskite solar cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.xcrp.2022.100800

Cite this

Lee, J. H., Kim, T., Song, S., Kim, Y., Shin, S., Lee, S. J., Kim, Y., Choi, Y. J., Kim, S., Zhang, K., Cho, J. H., Shin, H., Lee, G., Park, N. G., Kim, D., Seo, J., & Park, J. H. (2022). Enhanced band-filling effect in halide perovskites via hydrophobic conductive linkers. Cell Reports Physical Science, 3(3), Article 100800. https://doi.org/10.1016/j.xcrp.2022.100800

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abstract = "To approach the theoretical efficiency of perovskite solar cells (PSCs), the defects in perovskites should be managed. Among different types of defects, halide vacancies easily form on the surface of perovskite grains (PGs), hindering perovskite stability and the charge-transport process by trapping charge carriers. In this work, oxidized black phosphorus quantum dots (O-BPQDs) are incorporated into a perovskite to resolve these issues. Oxygen atoms of the O-BPQDs interact with uncoordinated Pb (halide vacancies), forming grain interconnections. These interactions reduce halide vacancies and suppress the overall recombination kinetics. Along with defect reduction, the O-BPQDs offer an efficient charge-transport channel across individual PGs. We achieve a best power-conversion efficiency (PCE) of 22.34% for SnO2-based PSCs and of 23.1% for TiO2-based PSCs. These PSCs exhibit moisture stability in a relative humidity (RH) 40% environment comparable to 3D/2D perovskites. Our strategy provides practical applicability and versatility for PSCs to approach the theoretical PCE value.",

keywords = "band filling, black phosphorus quantum dots, efficient charge transport, grain linking, halide vacancy passivation, humidity resistance, perovskite solar cells",

author = "Lee, {Jung Hwan} and Taehee Kim and Seulki Song and Yongchul Kim and Sooeun Shin and Lee, {Sun Je} and Younghoon Kim and Choi, {Young Jin} and Sungsoon Kim and Kan Zhang and Cho, {Jeong Ho} and Hyunjung Shin and Geunsik Lee and Park, {Nam Gyu} and Dongho Kim and Jangwon Seo and Park, {Jong Hyeok}",

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AU - Lee, Jung Hwan

AU - Kim, Taehee

AU - Song, Seulki

AU - Kim, Yongchul

AU - Shin, Sooeun

AU - Lee, Sun Je

AU - Kim, Younghoon

AU - Choi, Young Jin

AU - Kim, Sungsoon

AU - Zhang, Kan

AU - Cho, Jeong Ho

AU - Shin, Hyunjung

AU - Lee, Geunsik

AU - Park, Nam Gyu

AU - Kim, Dongho

AU - Seo, Jangwon

AU - Park, Jong Hyeok

PY - 2022/3/16

Y1 - 2022/3/16

N2 - To approach the theoretical efficiency of perovskite solar cells (PSCs), the defects in perovskites should be managed. Among different types of defects, halide vacancies easily form on the surface of perovskite grains (PGs), hindering perovskite stability and the charge-transport process by trapping charge carriers. In this work, oxidized black phosphorus quantum dots (O-BPQDs) are incorporated into a perovskite to resolve these issues. Oxygen atoms of the O-BPQDs interact with uncoordinated Pb (halide vacancies), forming grain interconnections. These interactions reduce halide vacancies and suppress the overall recombination kinetics. Along with defect reduction, the O-BPQDs offer an efficient charge-transport channel across individual PGs. We achieve a best power-conversion efficiency (PCE) of 22.34% for SnO2-based PSCs and of 23.1% for TiO2-based PSCs. These PSCs exhibit moisture stability in a relative humidity (RH) 40% environment comparable to 3D/2D perovskites. Our strategy provides practical applicability and versatility for PSCs to approach the theoretical PCE value.

AB - To approach the theoretical efficiency of perovskite solar cells (PSCs), the defects in perovskites should be managed. Among different types of defects, halide vacancies easily form on the surface of perovskite grains (PGs), hindering perovskite stability and the charge-transport process by trapping charge carriers. In this work, oxidized black phosphorus quantum dots (O-BPQDs) are incorporated into a perovskite to resolve these issues. Oxygen atoms of the O-BPQDs interact with uncoordinated Pb (halide vacancies), forming grain interconnections. These interactions reduce halide vacancies and suppress the overall recombination kinetics. Along with defect reduction, the O-BPQDs offer an efficient charge-transport channel across individual PGs. We achieve a best power-conversion efficiency (PCE) of 22.34% for SnO2-based PSCs and of 23.1% for TiO2-based PSCs. These PSCs exhibit moisture stability in a relative humidity (RH) 40% environment comparable to 3D/2D perovskites. Our strategy provides practical applicability and versatility for PSCs to approach the theoretical PCE value.

KW - band filling

KW - black phosphorus quantum dots

KW - efficient charge transport

KW - grain linking

KW - halide vacancy passivation

KW - humidity resistance

KW - perovskite solar cells

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ER -

Enhanced band-filling effect in halide perovskites via hydrophobic conductive linkers

Abstract

Keywords

UN SDGs

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