Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material

Mei Lyu; Sungmin Park; Hyeonju Lee; Boo Soo Ma; So Hyun Park; Ki Ha Hong; Hyungjun Kim; Taek Soo Kim; Jun Hong Noh; Hae Jung Son; Nam Gyu Park

doi:10.1021/acsami.1c05822

Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material

Mei Lyu, Sungmin Park, Hyeonju Lee, Boo Soo Ma, So Hyun Park, Ki Ha Hong, Hyungjun Kim, Taek Soo Kim, Jun Hong Noh, Hae Jung Son, Nam Gyu Park

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

25 Citations (Scopus)

Abstract

For enhancing the performance and long-term stability of perovskite solar cell (PSC) devices, interfacial engineering between the perovskite and hole-transporting material (HTM) is important. We developed a fluorinated conjugated polymer PFPT3 and used it as an interfacial layer between the perovskite and HTM layers in normal-type PSCs. Interaction of perovskite and PFPT3 via Pb-F bonding effectively induces an interfacial dipole moment, which resulted in energy-level bending; this was favorable for charge transfer and hole extraction at the interface. The PSC device achieved an increased efficiency of 22.00% with an open-circuit voltage of 1.13 V, short-circuit current density of 24.34 mA/cm2, and fill factor of 0.80 from a reverse scan and showed an averaged power conversion efficiency of 21.59%, which was averaged from forward and reverse scans. Furthermore, the device with PFPT3 showed much improved stability under an 85% RH condition because hydrophobic PFPT3 reduced water permeation into the perovskite layer, and more importantly, the enhanced contact adhesion at the PFPT3-mediated perovskite/HTM interface suppressed surface delamination and retarded water intrusion. The fluorinated conjugated polymeric interfacial material is effective for improving not only the efficiency but also the stability of the PSC devices.

Original language	English
Pages (from-to)	35595-35605
Number of pages	11
Journal	ACS Applied Materials and Interfaces
Volume	13
Issue number	30
DOIs	https://doi.org/10.1021/acsami.1c05822
Publication status	Published - 2021 Aug 4

Bibliographical note

Funding Information:
This work was supported by the KIST institutional internal program and National R&D Programs through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (MSIT) of Korea under contracts 2020M3H4A1A02084910, 2020M3H4A3081817, NRF-2012M3A6A7054861 (Global Frontier R&D Program on Center for Multiscale Energy System), NRF-2016M3D1A1027663, and NRF-2016M3D1A1027664 (Future Materials Discovery Program). This research was in part supported by the Defense Challengeable Future Technology Program of the Agency for Defense Development of Korea and Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry and Energy (No. 20193091010310).

Publisher Copyright:
© 2021 American Chemical Society.

Keywords

fluorinated conjugated polymer
hole-transporting layer
interfacial layer
moisture stability
perovskite solar cell

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.1c05822

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title = "Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material",

abstract = "For enhancing the performance and long-term stability of perovskite solar cell (PSC) devices, interfacial engineering between the perovskite and hole-transporting material (HTM) is important. We developed a fluorinated conjugated polymer PFPT3 and used it as an interfacial layer between the perovskite and HTM layers in normal-type PSCs. Interaction of perovskite and PFPT3 via Pb-F bonding effectively induces an interfacial dipole moment, which resulted in energy-level bending; this was favorable for charge transfer and hole extraction at the interface. The PSC device achieved an increased efficiency of 22.00% with an open-circuit voltage of 1.13 V, short-circuit current density of 24.34 mA/cm2, and fill factor of 0.80 from a reverse scan and showed an averaged power conversion efficiency of 21.59%, which was averaged from forward and reverse scans. Furthermore, the device with PFPT3 showed much improved stability under an 85% RH condition because hydrophobic PFPT3 reduced water permeation into the perovskite layer, and more importantly, the enhanced contact adhesion at the PFPT3-mediated perovskite/HTM interface suppressed surface delamination and retarded water intrusion. The fluorinated conjugated polymeric interfacial material is effective for improving not only the efficiency but also the stability of the PSC devices.",

keywords = "fluorinated conjugated polymer, hole-transporting layer, interfacial layer, moisture stability, perovskite solar cell",

author = "Mei Lyu and Sungmin Park and Hyeonju Lee and Ma, {Boo Soo} and Park, {So Hyun} and Hong, {Ki Ha} and Hyungjun Kim and Kim, {Taek Soo} and Noh, {Jun Hong} and Son, {Hae Jung} and Park, {Nam Gyu}",

note = "Funding Information: This work was supported by the KIST institutional internal program and National R&D Programs through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (MSIT) of Korea under contracts 2020M3H4A1A02084910, 2020M3H4A3081817, NRF-2012M3A6A7054861 (Global Frontier R&D Program on Center for Multiscale Energy System), NRF-2016M3D1A1027663, and NRF-2016M3D1A1027664 (Future Materials Discovery Program). This research was in part supported by the Defense Challengeable Future Technology Program of the Agency for Defense Development of Korea and Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry and Energy (No. 20193091010310). Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

month = aug,

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doi = "10.1021/acsami.1c05822",

language = "English",

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AU - Lyu, Mei

AU - Park, Sungmin

AU - Lee, Hyeonju

AU - Ma, Boo Soo

AU - Park, So Hyun

AU - Hong, Ki Ha

AU - Kim, Hyungjun

AU - Kim, Taek Soo

AU - Noh, Jun Hong

AU - Son, Hae Jung

AU - Park, Nam Gyu

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PY - 2021/8/4

Y1 - 2021/8/4

N2 - For enhancing the performance and long-term stability of perovskite solar cell (PSC) devices, interfacial engineering between the perovskite and hole-transporting material (HTM) is important. We developed a fluorinated conjugated polymer PFPT3 and used it as an interfacial layer between the perovskite and HTM layers in normal-type PSCs. Interaction of perovskite and PFPT3 via Pb-F bonding effectively induces an interfacial dipole moment, which resulted in energy-level bending; this was favorable for charge transfer and hole extraction at the interface. The PSC device achieved an increased efficiency of 22.00% with an open-circuit voltage of 1.13 V, short-circuit current density of 24.34 mA/cm2, and fill factor of 0.80 from a reverse scan and showed an averaged power conversion efficiency of 21.59%, which was averaged from forward and reverse scans. Furthermore, the device with PFPT3 showed much improved stability under an 85% RH condition because hydrophobic PFPT3 reduced water permeation into the perovskite layer, and more importantly, the enhanced contact adhesion at the PFPT3-mediated perovskite/HTM interface suppressed surface delamination and retarded water intrusion. The fluorinated conjugated polymeric interfacial material is effective for improving not only the efficiency but also the stability of the PSC devices.

AB - For enhancing the performance and long-term stability of perovskite solar cell (PSC) devices, interfacial engineering between the perovskite and hole-transporting material (HTM) is important. We developed a fluorinated conjugated polymer PFPT3 and used it as an interfacial layer between the perovskite and HTM layers in normal-type PSCs. Interaction of perovskite and PFPT3 via Pb-F bonding effectively induces an interfacial dipole moment, which resulted in energy-level bending; this was favorable for charge transfer and hole extraction at the interface. The PSC device achieved an increased efficiency of 22.00% with an open-circuit voltage of 1.13 V, short-circuit current density of 24.34 mA/cm2, and fill factor of 0.80 from a reverse scan and showed an averaged power conversion efficiency of 21.59%, which was averaged from forward and reverse scans. Furthermore, the device with PFPT3 showed much improved stability under an 85% RH condition because hydrophobic PFPT3 reduced water permeation into the perovskite layer, and more importantly, the enhanced contact adhesion at the PFPT3-mediated perovskite/HTM interface suppressed surface delamination and retarded water intrusion. The fluorinated conjugated polymeric interfacial material is effective for improving not only the efficiency but also the stability of the PSC devices.

KW - fluorinated conjugated polymer

KW - hole-transporting layer

KW - interfacial layer

KW - moisture stability

KW - perovskite solar cell

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ER -

Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material

Abstract

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Keywords

ASJC Scopus subject areas

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