PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study
In this work, we used the chemical vapor transport (CVT) method to grow PbI<sub>2</sub> crystals using iodine as a self-transporting agent. The crystals’ structure, composition, and uniformity were confirmed by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) mea...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/9/11/589 |
| _version_ | 1828351674692927488 |
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| author | Der-Yuh Lin Bo-Cheng Guo Zih-You Dai Chia-Feng Lin Hung-Pin Hsu |
| author_facet | Der-Yuh Lin Bo-Cheng Guo Zih-You Dai Chia-Feng Lin Hung-Pin Hsu |
| author_sort | Der-Yuh Lin |
| collection | DOAJ |
| description | In this work, we used the chemical vapor transport (CVT) method to grow PbI<sub>2</sub> crystals using iodine as a self-transporting agent. The crystals’ structure, composition, and uniformity were confirmed by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) measurements. We investigated the band gap energy using absorption spectroscopy measurements. Furthermore, we explored the temperature dependence of the band gap energy, which shifts from 2.346 eV at 300 K to 2.487 eV at 20 K, and extracted the temperature coefficients. A prototype photodetector with a lateral metal−semiconductor−metal (MSM) configuration was fabricated to evaluate its photoelectric properties using a photoconductivity spectrum (PC) and persistent photoconductivity (PPC) experiments. The resonance-like PC peak indicates the excitonic transition in absorption. The photoresponse I<sub>Light</sub>/I<sub>Dark</sub>-1 is up to 200%. |
| first_indexed | 2024-04-14T01:42:43Z |
| format | Article |
| id | doaj.art-eacfe5554b8b46db91028fbf58f0a1b3 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-14T01:42:43Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-eacfe5554b8b46db91028fbf58f0a1b32022-12-22T02:19:41ZengMDPI AGCrystals2073-43522019-11-0191158910.3390/cryst9110589cryst9110589PbI<sub>2</sub> Single Crystal Growth and Its Optical Property StudyDer-Yuh Lin0Bo-Cheng Guo1Zih-You Dai2Chia-Feng Lin3Hung-Pin Hsu4Department of Electronics Engineering, National Changhua University of Education, Changhua 50007, TaiwanDepartment of Electronics Engineering, National Changhua University of Education, Changhua 50007, TaiwanDepartment of Electronics Engineering, National Changhua University of Education, Changhua 50007, TaiwanDepartment of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, TaiwanDepartment of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, TaiwanIn this work, we used the chemical vapor transport (CVT) method to grow PbI<sub>2</sub> crystals using iodine as a self-transporting agent. The crystals’ structure, composition, and uniformity were confirmed by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) measurements. We investigated the band gap energy using absorption spectroscopy measurements. Furthermore, we explored the temperature dependence of the band gap energy, which shifts from 2.346 eV at 300 K to 2.487 eV at 20 K, and extracted the temperature coefficients. A prototype photodetector with a lateral metal−semiconductor−metal (MSM) configuration was fabricated to evaluate its photoelectric properties using a photoconductivity spectrum (PC) and persistent photoconductivity (PPC) experiments. The resonance-like PC peak indicates the excitonic transition in absorption. The photoresponse I<sub>Light</sub>/I<sub>Dark</sub>-1 is up to 200%.https://www.mdpi.com/2073-4352/9/11/589pbi22d semiconductorxrdpcplabsorption spectroscopy |
| spellingShingle | Der-Yuh Lin Bo-Cheng Guo Zih-You Dai Chia-Feng Lin Hung-Pin Hsu PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study Crystals pbi2 2d semiconductor xrd pc pl absorption spectroscopy |
| title | PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study |
| title_full | PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study |
| title_fullStr | PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study |
| title_full_unstemmed | PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study |
| title_short | PbI<sub>2</sub> Single Crystal Growth and Its Optical Property Study |
| title_sort | pbi sub 2 sub single crystal growth and its optical property study |
| topic | pbi2 2d semiconductor xrd pc pl absorption spectroscopy |
| url | https://www.mdpi.com/2073-4352/9/11/589 |
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