Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics
Surface imperfections in perovskite films upon crystallization may trigger trap-assisted non-radiative recombination which is a dominant recombination mechanism that potentially restricts the performance of solar devices. In this work, 2D alkylammonium halide perovskites are formed on the 3D perovsk...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2019
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| Online Access: | https://hdl.handle.net/10356/85190 http://hdl.handle.net/10220/50271 |
| _version_ | 1811689792417562624 |
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| author | Lim, Swee Sien Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Swamy, Varghese Chien, Sum Tze Mhaisalkar, Subodh G. Mathews, Nripan Koh, Teck Ming Shanmugam, Vignesh Guo, Xintong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Lim, Swee Sien Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Swamy, Varghese Chien, Sum Tze Mhaisalkar, Subodh G. Mathews, Nripan Koh, Teck Ming Shanmugam, Vignesh Guo, Xintong |
| author_sort | Lim, Swee Sien |
| collection | NTU |
| description | Surface imperfections in perovskite films upon crystallization may trigger trap-assisted non-radiative recombination which is a dominant recombination mechanism that potentially restricts the performance of solar devices. In this work, 2D alkylammonium halide perovskites are formed on the 3D perovskite structure to passivate interfacial defects and vacancies and enhance moisture tolerance. The hybrid 3D/2D perovskite films possess longer photoluminescence lifetimes, as well as lower trap state densities, indicating the passivation of cationic and halide vacancies on the surface or grain boundaries, thereby reducing the non-radiative recombination pathways. More importantly, the hybrid 3D/2D perovskite exhibits higher ambient stability than a pure 3D perovskite where the hydrophobic nature of the long aliphatic carbon chains in the 2D perovskite provide an additional moisture repelling effect to the entire perovskite film. With this approach, the power conversion efficiency of perovskite solar cells was improved from 14.17% to 15.74% along with improved device stability. The hybrid 3D/2D perovskite solar cell retained 86% of its initial power conversion efficiency whereas the control device lost almost 40% of its overall efficiency. Thus, the hybrid 3D/2D perovskite structure is an alternative solution for modulating defects and trap-state densities in high efficiency perovskite solar cells with simultaneously enhanced moisture stability. |
| first_indexed | 2024-10-01T05:53:44Z |
| format | Journal Article |
| id | ntu-10356/85190 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:53:44Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/851902021-01-08T02:56:33Z Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics Lim, Swee Sien Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Swamy, Varghese Chien, Sum Tze Mhaisalkar, Subodh G. Mathews, Nripan Koh, Teck Ming Shanmugam, Vignesh Guo, Xintong School of Materials Science & Engineering School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Perovskites Photovoltaics Science::Physics Surface imperfections in perovskite films upon crystallization may trigger trap-assisted non-radiative recombination which is a dominant recombination mechanism that potentially restricts the performance of solar devices. In this work, 2D alkylammonium halide perovskites are formed on the 3D perovskite structure to passivate interfacial defects and vacancies and enhance moisture tolerance. The hybrid 3D/2D perovskite films possess longer photoluminescence lifetimes, as well as lower trap state densities, indicating the passivation of cationic and halide vacancies on the surface or grain boundaries, thereby reducing the non-radiative recombination pathways. More importantly, the hybrid 3D/2D perovskite exhibits higher ambient stability than a pure 3D perovskite where the hydrophobic nature of the long aliphatic carbon chains in the 2D perovskite provide an additional moisture repelling effect to the entire perovskite film. With this approach, the power conversion efficiency of perovskite solar cells was improved from 14.17% to 15.74% along with improved device stability. The hybrid 3D/2D perovskite solar cell retained 86% of its initial power conversion efficiency whereas the control device lost almost 40% of its overall efficiency. Thus, the hybrid 3D/2D perovskite structure is an alternative solution for modulating defects and trap-state densities in high efficiency perovskite solar cells with simultaneously enhanced moisture stability. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2019-10-29T06:42:56Z 2019-12-06T15:59:06Z 2019-10-29T06:42:56Z 2019-12-06T15:59:06Z 2018 Journal Article Koh, T. M., Shanmugam, V., Guo, X., Lim, S. S., Filonik, O., Herzig, E. M., … Mathews, N. (2018). Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics. Journal of Materials Chemistry A, 6(5), 2122-2128. doi:10.1039/C7TA09657G 2050-7488 https://hdl.handle.net/10356/85190 http://hdl.handle.net/10220/50271 10.1039/C7TA09657G en Journal of Materials Chemistry A © 2018 The Author(s). All rights reserved. This paper was published by Royal Society of Chemistry in Journal of Materials Chemistry A and is made available with permission of The Author(s). 7 p. application/pdf |
| spellingShingle | Perovskites Photovoltaics Science::Physics Lim, Swee Sien Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Swamy, Varghese Chien, Sum Tze Mhaisalkar, Subodh G. Mathews, Nripan Koh, Teck Ming Shanmugam, Vignesh Guo, Xintong Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title | Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title_full | Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title_fullStr | Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title_full_unstemmed | Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title_short | Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics |
| title_sort | enhancing moisture tolerance in efficient hybrid 3d 2d perovskite photovoltaics |
| topic | Perovskites Photovoltaics Science::Physics |
| url | https://hdl.handle.net/10356/85190 http://hdl.handle.net/10220/50271 |
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