Influence of propyl alcohol addition during processing of molybdenum trioxide powders: Observation of novel dual-wavelength excitation photochromism |
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| Affiliation: | 1. Department of Electronics Engineering, Chang Gung University, Taoyuan, Taiwan, ROC;2. Department of Electronics Engineering, Feng-Chia University, Taichung, Taiwan, ROC;1. College of Physics and Information Science and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, Hunan, China;2. Faculty of Materials, Optoelectronics and Physics, Key Laboratory of Low-dimensional Materials and Application Technology (Ministry of Education), Xiangtan University, Xiangtan 411105, People''s Republic of China;3. Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong;1. School of Electronic Engineering, Xi''an University of Post & Telecommunications, Xi''an, 710121, PR China;2. School of Physics and Information Technology, Shaanxi Normal University, 710119, Xi''an, PR China;1. School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, China;2. Key Laboratory of Optoelectronics Information Technology, Ministry of Education, Tianjin, 300072, China;3. Changzhou Vocational Institute of Engineering, Changzhou, 213164, China;4. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, PR China |
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| Abstract: | The novel dual-wavelength excitation photochromic molybdenum trioxide (MoO3) powders are fabricated successfully via the hydrothermal method by the addition of propyl alcohol. The samples were fully characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–vis), and colorimetry. The characteristic spectrum of XRD demonstrates that the as-obtained products are highly pure. The results show that the flowerlike MoO3 sample with the inducer of propyl alcohol has better photochromic properties, which was analyzed by colorimetry. It is shown that both of the samples exhibit a strong adsorption band between 250 and 400 nm in the UV range. Moreover, the UV–vis spectra shows that MoO3 synthesized with added propyl alcohol absorbs light not only between 250 and 400 nm but also displays an additional band between 500 and 800 nm, demonstrating novel dual-wavelength excitation photochromic properties. |
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| Keywords: | Dual-wavelength Photochromism Spectroscopy Electron microscopy |
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