Cs2AgBiBr6 and related Halide double perovskite porous single crystals
Abstract The utilization of single crystals is exponentially growing in optoelectronic devices due to their exceptional benefits, including high phase purity and the absence of grain boundaries. However, achieving single crystals with a porous structure poses significant challenges. In this study, w...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85326-2 |
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| author | Maurya Sandeep Pradeepkumar Aruchamy Kathirvel Sayan Ghosh Chandran Sudakar |
| author_facet | Maurya Sandeep Pradeepkumar Aruchamy Kathirvel Sayan Ghosh Chandran Sudakar |
| author_sort | Maurya Sandeep Pradeepkumar |
| collection | DOAJ |
| description | Abstract The utilization of single crystals is exponentially growing in optoelectronic devices due to their exceptional benefits, including high phase purity and the absence of grain boundaries. However, achieving single crystals with a porous structure poses significant challenges. In this study, we present a method for fabricating porous single crystals (porous-SC) of Cs2AgBiBr6 and related halide double perovskites using an infrared-assisted spin coating technique. The porous-SC are formed through a non-classical crystallization process, where oriented crystallographic platelets assemble into porous-SC clusters and merge to create iso-oriented single crystalline building blocks, with pore regions primarily located in the gaps between the platelets. Large porous square-shaped Cs2AgBiBr6 halide double perovskite (HDP) single crystals with lateral dimension ~ 10 to 50 μm and few µm thickness are realized with preferred orientation along {h00} on the FTO substrate upon subsequent spin-coating of layers. Analysis using angle-resolved polarized Raman spectroscopy, X-ray diffraction and transmission electron microscopy confirms the formation of single crystals of Cs2AgBiBr6. Further, to get a uniform coating of highly interconnected porous-SC clusters, wiping method under IR illumination is employed. Solar cell devices fabricated from these porous-SCs perform better with JSC =1.40 mA/cm2, VOC=1.04 V and η = 0.86% than the conventional polycrystalline thin films with JSC = 0.55 mA/cm2, VOC=0.94 V and η = 0.28%. Cs2AgBiBr6 porous-SC shows potential for a wide range of optoelectronic and photoelectrochemical applications. |
| format | Article |
| id | doaj-art-5825185d505f451fa0745ba96a11e4c3 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-5825185d505f451fa0745ba96a11e4c32025-01-05T12:23:04ZengNature PortfolioScientific Reports2045-23222025-01-011511810.1038/s41598-025-85326-2Cs2AgBiBr6 and related Halide double perovskite porous single crystalsMaurya Sandeep Pradeepkumar0Aruchamy Kathirvel1Sayan Ghosh2Chandran Sudakar3Multifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology MadrasMultifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology MadrasMultifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology MadrasMultifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology MadrasAbstract The utilization of single crystals is exponentially growing in optoelectronic devices due to their exceptional benefits, including high phase purity and the absence of grain boundaries. However, achieving single crystals with a porous structure poses significant challenges. In this study, we present a method for fabricating porous single crystals (porous-SC) of Cs2AgBiBr6 and related halide double perovskites using an infrared-assisted spin coating technique. The porous-SC are formed through a non-classical crystallization process, where oriented crystallographic platelets assemble into porous-SC clusters and merge to create iso-oriented single crystalline building blocks, with pore regions primarily located in the gaps between the platelets. Large porous square-shaped Cs2AgBiBr6 halide double perovskite (HDP) single crystals with lateral dimension ~ 10 to 50 μm and few µm thickness are realized with preferred orientation along {h00} on the FTO substrate upon subsequent spin-coating of layers. Analysis using angle-resolved polarized Raman spectroscopy, X-ray diffraction and transmission electron microscopy confirms the formation of single crystals of Cs2AgBiBr6. Further, to get a uniform coating of highly interconnected porous-SC clusters, wiping method under IR illumination is employed. Solar cell devices fabricated from these porous-SCs perform better with JSC =1.40 mA/cm2, VOC=1.04 V and η = 0.86% than the conventional polycrystalline thin films with JSC = 0.55 mA/cm2, VOC=0.94 V and η = 0.28%. Cs2AgBiBr6 porous-SC shows potential for a wide range of optoelectronic and photoelectrochemical applications.https://doi.org/10.1038/s41598-025-85326-2Halide double perovskiteCs2AgBiBr6PorousSingle crystalSolar cell |
| spellingShingle | Maurya Sandeep Pradeepkumar Aruchamy Kathirvel Sayan Ghosh Chandran Sudakar Cs2AgBiBr6 and related Halide double perovskite porous single crystals Scientific Reports Halide double perovskite Cs2AgBiBr6 Porous Single crystal Solar cell |
| title | Cs2AgBiBr6 and related Halide double perovskite porous single crystals |
| title_full | Cs2AgBiBr6 and related Halide double perovskite porous single crystals |
| title_fullStr | Cs2AgBiBr6 and related Halide double perovskite porous single crystals |
| title_full_unstemmed | Cs2AgBiBr6 and related Halide double perovskite porous single crystals |
| title_short | Cs2AgBiBr6 and related Halide double perovskite porous single crystals |
| title_sort | cs2agbibr6 and related halide double perovskite porous single crystals |
| topic | Halide double perovskite Cs2AgBiBr6 Porous Single crystal Solar cell |
| url | https://doi.org/10.1038/s41598-025-85326-2 |
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