Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films
The physical and chemical stability of perovskite films has always been a key issue for their industrialization, which has been extensively studied in terms of materials, environment, and encapsulation. Spin coating is one of the most commonly used methods for the preparation of perovskite films in...
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2023-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/15/5454 |
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| author | Chunhua Ren Zhishun Zhou Shuming Cao Mengting Jiao Dongyang Xue |
| author_facet | Chunhua Ren Zhishun Zhou Shuming Cao Mengting Jiao Dongyang Xue |
| author_sort | Chunhua Ren |
| collection | DOAJ |
| description | The physical and chemical stability of perovskite films has always been a key issue for their industrialization, which has been extensively studied in terms of materials, environment, and encapsulation. Spin coating is one of the most commonly used methods for the preparation of perovskite films in research. However, little attention has been paid to the deformation state of the substrate when it is fixed by means of adsorption and its impact. In this work, the three-dimensional digital image correlation (3D-DIC) method and hyperspectral technology are used to acquire and analyze the adsorption deformation characteristics of the substrate during spin coating, as well as the resulting inhomogeneity. Plastic and four different thicknesses of float glass (0.2, 0.5, 0.7, 1.1 mm) were selected as substrates, and they were tested separately on two suction cups with different structures. The results show that the plastic and 0.2 mm specimens exhibit obvious strain localization behavior. The distribution and magnitude of the strain are affected by the size of the sucker structure, especially the width of the groove. For glass specimens, this effect shows a nonlinear decrease with increasing substrate thickness. Compared to the strain value, the irregularity of local deformation has a greater impact on the non-uniform distribution of materials. Finally, inhomogeneities in the perovskite films were observed through optical lens and hyperspectral data. Obviously, the deformation of the substrate caused by adsorption should attract the attention of researchers, especially for flexible or rigid substrates with low thickness. This may affect the centrifugal diffusion path of the precursor, causing microstructure inhomogeneity and residual stress, etc. |
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| id | doaj.art-de3452f616fb4387a5aaba5d9da3e92a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:22:55Z |
| publishDate | 2023-08-01 |
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| series | Materials |
| spelling | doaj.art-de3452f616fb4387a5aaba5d9da3e92a2023-11-18T23:13:29ZengMDPI AGMaterials1996-19442023-08-011615545410.3390/ma16155454Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite FilmsChunhua Ren0Zhishun Zhou1Shuming Cao2Mengting Jiao3Dongyang Xue4School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, ChinaSchool of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, ChinaSchool of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, ChinaSchool of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, ChinaSchool of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, ChinaThe physical and chemical stability of perovskite films has always been a key issue for their industrialization, which has been extensively studied in terms of materials, environment, and encapsulation. Spin coating is one of the most commonly used methods for the preparation of perovskite films in research. However, little attention has been paid to the deformation state of the substrate when it is fixed by means of adsorption and its impact. In this work, the three-dimensional digital image correlation (3D-DIC) method and hyperspectral technology are used to acquire and analyze the adsorption deformation characteristics of the substrate during spin coating, as well as the resulting inhomogeneity. Plastic and four different thicknesses of float glass (0.2, 0.5, 0.7, 1.1 mm) were selected as substrates, and they were tested separately on two suction cups with different structures. The results show that the plastic and 0.2 mm specimens exhibit obvious strain localization behavior. The distribution and magnitude of the strain are affected by the size of the sucker structure, especially the width of the groove. For glass specimens, this effect shows a nonlinear decrease with increasing substrate thickness. Compared to the strain value, the irregularity of local deformation has a greater impact on the non-uniform distribution of materials. Finally, inhomogeneities in the perovskite films were observed through optical lens and hyperspectral data. Obviously, the deformation of the substrate caused by adsorption should attract the attention of researchers, especially for flexible or rigid substrates with low thickness. This may affect the centrifugal diffusion path of the precursor, causing microstructure inhomogeneity and residual stress, etc.https://www.mdpi.com/1996-1944/16/15/5454spin coatingfloat glassdigital image correlation methodstrainhyperspectral |
| spellingShingle | Chunhua Ren Zhishun Zhou Shuming Cao Mengting Jiao Dongyang Xue Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films Materials spin coating float glass digital image correlation method strain hyperspectral |
| title | Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films |
| title_full | Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films |
| title_fullStr | Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films |
| title_full_unstemmed | Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films |
| title_short | Study on the Adsorption Deformation of a Substrate via Spin Coating Based on the 3D-DIC Method and Its Effect on the Homogeneity of Perovskite Films |
| title_sort | study on the adsorption deformation of a substrate via spin coating based on the 3d dic method and its effect on the homogeneity of perovskite films |
| topic | spin coating float glass digital image correlation method strain hyperspectral |
| url | https://www.mdpi.com/1996-1944/16/15/5454 |
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