Coadditive Engineering with 5-Ammonium Valeric Acid Iodide for Efficient and Stable Sn Perovskite Solar Cells

Md Emrul Kayesh; Kiyoto Matsuishi; Ryuji Kaneko; Said Kazaoui; Jae Joon Lee; Takeshi Noda; Ashraful Islam

doi:10.1021/acsenergylett.8b02216

Coadditive Engineering with 5-Ammonium Valeric Acid Iodide for Efficient and Stable Sn Perovskite Solar Cells

Md Emrul Kayesh, Kiyoto Matsuishi, Ryuji Kaneko, Said Kazaoui, Jae Joon Lee, Takeshi Noda, Ashraful Islam

Department of Energy and Materials Engineering

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

160 Scopus citations

Abstract

Sn-based perovskite solar cells (PSCs) featuring high performance and long-term stability are very challenging because Sn²⁺ is relatively prone to oxidation. Here, we have performed coadditive engineering with 5-ammonium valeric acid iodide (5-AVAI) for FASnI₃-based perovskite films. From the morphological, structural, and elemental analyses, we observed that 5-AVAI affects the crystal growth of perovskites through its hydrogen bond with I^- of the SnI₆ ^4- octahedral. As a result, pinhole-free homogeneous and stable Sn-based perovskite films form over a large area with lower Sn⁴⁺ content. This made us able to enhance the power conversion efficiency (PCE) for Sn-based PSCs up to 7% in a 0.25 cm² aperture area. Most importantly, the 5-AVAI added PSCs showed a record stability and maintained their initial PCE under 1 sun continuous illumination at maximum power point tracking for 100 h.

Original language	English
Pages (from-to)	278-284
Number of pages	7
Journal	ACS Energy Letters
Volume	4
Issue number	1
DOIs	https://doi.org/10.1021/acsenergylett.8b02216
State	Published - 11 Jan 2019

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title = "Coadditive Engineering with 5-Ammonium Valeric Acid Iodide for Efficient and Stable Sn Perovskite Solar Cells",

abstract = "Sn-based perovskite solar cells (PSCs) featuring high performance and long-term stability are very challenging because Sn2+ is relatively prone to oxidation. Here, we have performed coadditive engineering with 5-ammonium valeric acid iodide (5-AVAI) for FASnI3-based perovskite films. From the morphological, structural, and elemental analyses, we observed that 5-AVAI affects the crystal growth of perovskites through its hydrogen bond with I- of the SnI6 4- octahedral. As a result, pinhole-free homogeneous and stable Sn-based perovskite films form over a large area with lower Sn4+ content. This made us able to enhance the power conversion efficiency (PCE) for Sn-based PSCs up to 7% in a 0.25 cm2 aperture area. Most importantly, the 5-AVAI added PSCs showed a record stability and maintained their initial PCE under 1 sun continuous illumination at maximum power point tracking for 100 h.",

author = "Kayesh, {Md Emrul} and Kiyoto Matsuishi and Ryuji Kaneko and Said Kazaoui and Lee, {Jae Joon} and Takeshi Noda and Ashraful Islam",

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doi = "10.1021/acsenergylett.8b02216",

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AU - Kayesh, Md Emrul

AU - Matsuishi, Kiyoto

AU - Kaneko, Ryuji

AU - Kazaoui, Said

AU - Lee, Jae Joon

AU - Noda, Takeshi

AU - Islam, Ashraful

PY - 2019/1/11

Y1 - 2019/1/11

N2 - Sn-based perovskite solar cells (PSCs) featuring high performance and long-term stability are very challenging because Sn2+ is relatively prone to oxidation. Here, we have performed coadditive engineering with 5-ammonium valeric acid iodide (5-AVAI) for FASnI3-based perovskite films. From the morphological, structural, and elemental analyses, we observed that 5-AVAI affects the crystal growth of perovskites through its hydrogen bond with I- of the SnI6 4- octahedral. As a result, pinhole-free homogeneous and stable Sn-based perovskite films form over a large area with lower Sn4+ content. This made us able to enhance the power conversion efficiency (PCE) for Sn-based PSCs up to 7% in a 0.25 cm2 aperture area. Most importantly, the 5-AVAI added PSCs showed a record stability and maintained their initial PCE under 1 sun continuous illumination at maximum power point tracking for 100 h.

AB - Sn-based perovskite solar cells (PSCs) featuring high performance and long-term stability are very challenging because Sn2+ is relatively prone to oxidation. Here, we have performed coadditive engineering with 5-ammonium valeric acid iodide (5-AVAI) for FASnI3-based perovskite films. From the morphological, structural, and elemental analyses, we observed that 5-AVAI affects the crystal growth of perovskites through its hydrogen bond with I- of the SnI6 4- octahedral. As a result, pinhole-free homogeneous and stable Sn-based perovskite films form over a large area with lower Sn4+ content. This made us able to enhance the power conversion efficiency (PCE) for Sn-based PSCs up to 7% in a 0.25 cm2 aperture area. Most importantly, the 5-AVAI added PSCs showed a record stability and maintained their initial PCE under 1 sun continuous illumination at maximum power point tracking for 100 h.

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Coadditive Engineering with 5-Ammonium Valeric Acid Iodide for Efficient and Stable Sn Perovskite Solar Cells

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