Effect of cation composition on the mechanical stability of perovskite solar cells
Photoactive perovskite semiconductors are highly tunable, with numerous inorganic and organic cations readily incorporated to modify optoelectronic properties. However, despite the importance of device reliability and long service lifetimes, the effects of various cations on the mechanical propertie...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/139319 |
| _version_ | 1824454692285972480 |
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| author | Rolston, Nicholas Printz, Adam D. Tracy, Jared M. Weerasinghe, Hashita C. Vak, Doojin Haur, Lew Jia Priyadarshi, Anish Mathews, Nripan Slotcavage, Daniel J. McGehee, Michael D. Kalan, Roghi E. Zielinski, Kenneth Grimm, Ronald L. Tsai, Hsinhan Nie, Wanyi Mohite, Aditya D. Gholipour, Somayeh Saliba, Michael Grätzel, Michael Dauskardt, Reinhold H. |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Rolston, Nicholas Printz, Adam D. Tracy, Jared M. Weerasinghe, Hashita C. Vak, Doojin Haur, Lew Jia Priyadarshi, Anish Mathews, Nripan Slotcavage, Daniel J. McGehee, Michael D. Kalan, Roghi E. Zielinski, Kenneth Grimm, Ronald L. Tsai, Hsinhan Nie, Wanyi Mohite, Aditya D. Gholipour, Somayeh Saliba, Michael Grätzel, Michael Dauskardt, Reinhold H. |
| author_sort | Rolston, Nicholas |
| collection | NTU |
| description | Photoactive perovskite semiconductors are highly tunable, with numerous inorganic and organic cations readily incorporated to modify optoelectronic properties. However, despite the importance of device reliability and long service lifetimes, the effects of various cations on the mechanical properties of perovskites are largely overlooked. In this study, the cohesion energy of perovskites containing various cation combinations of methylammonium, formamidinium, cesium, butylammonium, and 5-aminovaleric acid is reported. A trade-off is observed between the mechanical integrity and the efficiency of perovskite devices. High efficiency devices exhibit decreased cohesion, which is attributed to reduced grain sizes with the inclusion of additional cations and PbI2 additives. Microindentation hardness testing is performed to estimate the fracture toughness of single-crystal perovskite, and the results indicated perovskites are inherently fragile, even in the absence of grain boundaries and defects. The devices found to have the highest fracture energies are perovskites infiltrated into a porous TiO2/ZrO2/C triple layer, which provide extrinsic reinforcement and shielding for enhanced mechanical and chemical stability. |
| first_indexed | 2025-02-19T03:26:21Z |
| format | Journal Article |
| id | ntu-10356/139319 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:26:21Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1393192021-01-08T06:07:30Z Effect of cation composition on the mechanical stability of perovskite solar cells Rolston, Nicholas Printz, Adam D. Tracy, Jared M. Weerasinghe, Hashita C. Vak, Doojin Haur, Lew Jia Priyadarshi, Anish Mathews, Nripan Slotcavage, Daniel J. McGehee, Michael D. Kalan, Roghi E. Zielinski, Kenneth Grimm, Ronald L. Tsai, Hsinhan Nie, Wanyi Mohite, Aditya D. Gholipour, Somayeh Saliba, Michael Grätzel, Michael Dauskardt, Reinhold H. School of Materials Science & Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Materials Cation Mechanical Stability Photoactive perovskite semiconductors are highly tunable, with numerous inorganic and organic cations readily incorporated to modify optoelectronic properties. However, despite the importance of device reliability and long service lifetimes, the effects of various cations on the mechanical properties of perovskites are largely overlooked. In this study, the cohesion energy of perovskites containing various cation combinations of methylammonium, formamidinium, cesium, butylammonium, and 5-aminovaleric acid is reported. A trade-off is observed between the mechanical integrity and the efficiency of perovskite devices. High efficiency devices exhibit decreased cohesion, which is attributed to reduced grain sizes with the inclusion of additional cations and PbI2 additives. Microindentation hardness testing is performed to estimate the fracture toughness of single-crystal perovskite, and the results indicated perovskites are inherently fragile, even in the absence of grain boundaries and defects. The devices found to have the highest fracture energies are perovskites infiltrated into a porous TiO2/ZrO2/C triple layer, which provide extrinsic reinforcement and shielding for enhanced mechanical and chemical stability. 2020-05-19T01:10:40Z 2020-05-19T01:10:40Z 2017 Journal Article Rolston, N., Printz, A. D., Tracy, J. M., Weerasinghe, H. C., Vak, D., Haur, L. J., . . . Dauskardt, R. H. (2018). Effect of cation composition on the mechanical stability of perovskite solar cells. Advanced Energy Materials, 8(9), 1702116-. doi:10.1002/aenm.201702116 1614-6832 https://hdl.handle.net/10356/139319 10.1002/aenm.201702116 2-s2.0-85037645794 9 8 en Advanced Energy Materials © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Engineering::Materials Cation Mechanical Stability Rolston, Nicholas Printz, Adam D. Tracy, Jared M. Weerasinghe, Hashita C. Vak, Doojin Haur, Lew Jia Priyadarshi, Anish Mathews, Nripan Slotcavage, Daniel J. McGehee, Michael D. Kalan, Roghi E. Zielinski, Kenneth Grimm, Ronald L. Tsai, Hsinhan Nie, Wanyi Mohite, Aditya D. Gholipour, Somayeh Saliba, Michael Grätzel, Michael Dauskardt, Reinhold H. Effect of cation composition on the mechanical stability of perovskite solar cells |
| title | Effect of cation composition on the mechanical stability of perovskite solar cells |
| title_full | Effect of cation composition on the mechanical stability of perovskite solar cells |
| title_fullStr | Effect of cation composition on the mechanical stability of perovskite solar cells |
| title_full_unstemmed | Effect of cation composition on the mechanical stability of perovskite solar cells |
| title_short | Effect of cation composition on the mechanical stability of perovskite solar cells |
| title_sort | effect of cation composition on the mechanical stability of perovskite solar cells |
| topic | Engineering::Materials Cation Mechanical Stability |
| url | https://hdl.handle.net/10356/139319 |
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