Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens
CsI(Tl) scintillation screens have been widely applied in X-ray nondestructive testing (NDT) because of their low cost, high scintillation efficiency, and fluorescence guide columnar microstructures. The effect of humidity exposure on the microstructure and photoluminescence properties of polycrysta...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/9/1355 |
| _version_ | 1797580698998013952 |
|---|---|
| author | Lina Guo Biyou Jiang Chunhui Tian Ping Chen Shuang Liu |
| author_facet | Lina Guo Biyou Jiang Chunhui Tian Ping Chen Shuang Liu |
| author_sort | Lina Guo |
| collection | DOAJ |
| description | CsI(Tl) scintillation screens have been widely applied in X-ray nondestructive testing (NDT) because of their low cost, high scintillation efficiency, and fluorescence guide columnar microstructures. The effect of humidity exposure on the microstructure and photoluminescence properties of polycrystalline CsI(Tl) screens was investigated in this work. The results indicate that the grain diameter of the columnar microstructure increased with increased exposure time in a humid environment. The degree of anisotropy of polycrystalline screens changed from (211) and (310) to (110) orientation with exposure time. FT-IR Spectra of the exposed screens peaked at 3734 cm<sup>−1</sup>, 3710 cm<sup>−1</sup>, 3676 cm<sup>−1</sup>, 3647 cm<sup>−1</sup>, 3627 cm<sup>−1</sup>, 3598 c<sup>−1</sup>, and 3566 cm<sup>−1</sup> due to the symmetrical and asymmetrical stretching vibrations of water molecules. In addition, the photoluminescence properties of exposed screens decreased with increased humidity exposure time due to the deliquescence caused by water molecules. After hours of humidity exposure, the photoluminescence and imaging properties of the screens decrease obviously and tend to reduce slowly. The moisture absorption and deliquescence would directly affect the service reliability and the storage lifetime of polycrystalline CsI(Tl) screens. |
| first_indexed | 2024-03-10T22:53:35Z |
| format | Article |
| id | doaj.art-c704abc37fdb48db8c2be34a90886cd5 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T22:53:35Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-c704abc37fdb48db8c2be34a90886cd52023-11-19T10:09:33ZengMDPI AGCrystals2073-43522023-09-01139135510.3390/cryst13091355Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) ScreensLina Guo0Biyou Jiang1Chunhui Tian2Ping Chen3Shuang Liu4Shanxi Provincial Key Center for Modern Nondestructive Testing Engineering, School of Information and Communication Engineering, North University of China, Taiyuan 030051, ChinaShanxi Provincial Key Center for Modern Nondestructive Testing Engineering, School of Information and Communication Engineering, North University of China, Taiyuan 030051, ChinaState Key Laboratory of Electronic Thin Screens and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, ChinaShanxi Provincial Key Center for Modern Nondestructive Testing Engineering, School of Information and Communication Engineering, North University of China, Taiyuan 030051, ChinaState Key Laboratory of Electronic Thin Screens and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, ChinaCsI(Tl) scintillation screens have been widely applied in X-ray nondestructive testing (NDT) because of their low cost, high scintillation efficiency, and fluorescence guide columnar microstructures. The effect of humidity exposure on the microstructure and photoluminescence properties of polycrystalline CsI(Tl) screens was investigated in this work. The results indicate that the grain diameter of the columnar microstructure increased with increased exposure time in a humid environment. The degree of anisotropy of polycrystalline screens changed from (211) and (310) to (110) orientation with exposure time. FT-IR Spectra of the exposed screens peaked at 3734 cm<sup>−1</sup>, 3710 cm<sup>−1</sup>, 3676 cm<sup>−1</sup>, 3647 cm<sup>−1</sup>, 3627 cm<sup>−1</sup>, 3598 c<sup>−1</sup>, and 3566 cm<sup>−1</sup> due to the symmetrical and asymmetrical stretching vibrations of water molecules. In addition, the photoluminescence properties of exposed screens decreased with increased humidity exposure time due to the deliquescence caused by water molecules. After hours of humidity exposure, the photoluminescence and imaging properties of the screens decrease obviously and tend to reduce slowly. The moisture absorption and deliquescence would directly affect the service reliability and the storage lifetime of polycrystalline CsI(Tl) screens.https://www.mdpi.com/2073-4352/13/9/1355CsI(Tl) screensmicrostructure morphologycrystalline structurephotoluminescence propertieshumidity exposure |
| spellingShingle | Lina Guo Biyou Jiang Chunhui Tian Ping Chen Shuang Liu Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens Crystals CsI(Tl) screens microstructure morphology crystalline structure photoluminescence properties humidity exposure |
| title | Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens |
| title_full | Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens |
| title_fullStr | Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens |
| title_full_unstemmed | Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens |
| title_short | Effect of Humidity Exposure on Microstructure and Photoluminescence Properties of Polycrystalline CsI(Tl) Screens |
| title_sort | effect of humidity exposure on microstructure and photoluminescence properties of polycrystalline csi tl screens |
| topic | CsI(Tl) screens microstructure morphology crystalline structure photoluminescence properties humidity exposure |
| url | https://www.mdpi.com/2073-4352/13/9/1355 |
| work_keys_str_mv | AT linaguo effectofhumidityexposureonmicrostructureandphotoluminescencepropertiesofpolycrystallinecsitlscreens AT biyoujiang effectofhumidityexposureonmicrostructureandphotoluminescencepropertiesofpolycrystallinecsitlscreens AT chunhuitian effectofhumidityexposureonmicrostructureandphotoluminescencepropertiesofpolycrystallinecsitlscreens AT pingchen effectofhumidityexposureonmicrostructureandphotoluminescencepropertiesofpolycrystallinecsitlscreens AT shuangliu effectofhumidityexposureonmicrostructureandphotoluminescencepropertiesofpolycrystallinecsitlscreens |