Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films
High-quality inorganic cesium lead halide perovskite CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> thin films were successfully achieved through evaporation of the precursors and deposition sequentially by a single-source thermal evaporation system. The diffe...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/12/2953 |
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| author | Saif M. H. Qaid Hamid M. Ghaithan Bandar Ali Al-Asbahi Abdullah S. Aldwayyan |
| author_facet | Saif M. H. Qaid Hamid M. Ghaithan Bandar Ali Al-Asbahi Abdullah S. Aldwayyan |
| author_sort | Saif M. H. Qaid |
| collection | DOAJ |
| description | High-quality inorganic cesium lead halide perovskite CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> thin films were successfully achieved through evaporation of the precursors and deposition sequentially by a single-source thermal evaporation system. The different melting points of the precursors were enabled us to evaporate precursors one by one in one trip. The resulting films through its fabrication were smooth and pinhole-free. Furthermore, this technique enabled complete surface coverage by high-quality perovskite crystallization and more moisture stability oppositely of that produce by solution-processed. Then the perovskite films were encapsulated by evaporated a polymethyl methacrylate (PMMA) polymer as a specialized surface passivation approach with various thicknesses. The blue emission, high photoluminescence quantum yield (PLQY), stable, and low threshold of amplified spontaneous emission (ASE) properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> films in the bulk structure at room temperature were achieved. The effects of the surface-passivation layer and its thickness on the optical response were examined. Detailed analysis of the dependence of ASE properties on the surface passivation layer thickness was performed, and it was determined this achieves performance optimization. The ASE characteristics of bare perovskite thin film were influenced by the incorporation of the PMMA with various thicknesses. The improvement to the surface layer of perovskite thin films compared to that of the bare perovskite thin film was attributed to the combination of thermal evaporation deposition and surface encapsulation. The best results were achieved when using a low PMMA thickness up to 100 nm and reducing the ASE threshold by ~11 μJ/cm<sup>2</sup> when compared with free-encapsulation and by ~13 μJ/cm<sup>2</sup> when encapsulation occurs at 200 nm or thicker. Compared to the bare CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub>, ASE reduced 1.1 times when the PMMA thickness was 100 nm. |
| first_indexed | 2024-03-10T14:09:46Z |
| format | Article |
| id | doaj.art-72f460dd348341a6a992d09e97b2b305 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T14:09:46Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-72f460dd348341a6a992d09e97b2b3052023-11-21T00:16:24ZengMDPI AGPolymers2073-43602020-12-011212295310.3390/polym12122953Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite FilmsSaif M. H. Qaid0Hamid M. Ghaithan1Bandar Ali Al-Asbahi2Abdullah S. Aldwayyan3Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaPhysics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaPhysics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaPhysics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaHigh-quality inorganic cesium lead halide perovskite CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> thin films were successfully achieved through evaporation of the precursors and deposition sequentially by a single-source thermal evaporation system. The different melting points of the precursors were enabled us to evaporate precursors one by one in one trip. The resulting films through its fabrication were smooth and pinhole-free. Furthermore, this technique enabled complete surface coverage by high-quality perovskite crystallization and more moisture stability oppositely of that produce by solution-processed. Then the perovskite films were encapsulated by evaporated a polymethyl methacrylate (PMMA) polymer as a specialized surface passivation approach with various thicknesses. The blue emission, high photoluminescence quantum yield (PLQY), stable, and low threshold of amplified spontaneous emission (ASE) properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> films in the bulk structure at room temperature were achieved. The effects of the surface-passivation layer and its thickness on the optical response were examined. Detailed analysis of the dependence of ASE properties on the surface passivation layer thickness was performed, and it was determined this achieves performance optimization. The ASE characteristics of bare perovskite thin film were influenced by the incorporation of the PMMA with various thicknesses. The improvement to the surface layer of perovskite thin films compared to that of the bare perovskite thin film was attributed to the combination of thermal evaporation deposition and surface encapsulation. The best results were achieved when using a low PMMA thickness up to 100 nm and reducing the ASE threshold by ~11 μJ/cm<sup>2</sup> when compared with free-encapsulation and by ~13 μJ/cm<sup>2</sup> when encapsulation occurs at 200 nm or thicker. Compared to the bare CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub>, ASE reduced 1.1 times when the PMMA thickness was 100 nm.https://www.mdpi.com/2073-4360/12/12/2953perovskitesurface passivationPMMAblue emissionamplified spontaneous emissionsingle-source thermal evaporation |
| spellingShingle | Saif M. H. Qaid Hamid M. Ghaithan Bandar Ali Al-Asbahi Abdullah S. Aldwayyan Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films Polymers perovskite surface passivation PMMA blue emission amplified spontaneous emission single-source thermal evaporation |
| title | Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films |
| title_full | Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films |
| title_fullStr | Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films |
| title_full_unstemmed | Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films |
| title_short | Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br<sub>0.5</sub>Cl<sub>0.5</sub>)<sub>3</sub> Perovskite Films |
| title_sort | single source thermal evaporation growth and the tuning surface passivation layer thickness effect in enhanced amplified spontaneous emission properties of cspb br sub 0 5 sub cl sub 0 5 sub sub 3 sub perovskite films |
| topic | perovskite surface passivation PMMA blue emission amplified spontaneous emission single-source thermal evaporation |
| url | https://www.mdpi.com/2073-4360/12/12/2953 |
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