Bismuth sulfide nanoflakes and nanorods as high performance photodetectors and photoelectrochemical cells |
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| Affiliation: | 1. College of Electronic Information and Electric Engineering, Anyang Institute of Technology, Anyang 455000, China;2. College of Mathematics and Physics, Anyang Institute of Technology, Anyang 455000, China;1. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;2. Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;3. UiTM Negeri Sembilan, Kampus Kuala Pilah, Pekan Parit Tinggi, 72000 Kuala Pilah, Negeri Sembilan, Malaysia;1. Department of Physics, Sardar Patel University, Vallabh Vidyanagar, 388120, India;2. Department of Physical Sciences, P. D. Patel Institute of Applied Sciences, CHRUSAT, Changa, 388421, India |
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| Abstract: | Flake-like and rod-like bismuth sulfide nanostructures were synthesized via a facile polyol refluxing process. The rigid photodetectors based on both nanomaterials have the features of linear photocurrent characteristics and good sensitivity. Especially, the rigid bismuth sulfide nanoflakes photodetector has fast response time of 0.5 s and recovery time of 0.7 s. The flexible photodetectors were then fabricated on PET substrate, and this caused both the response time and the recovery time to increase by a factor of ∼2.5. Moreover, the photoelectrochemical (PEC) devices exhibited photosensitivity with the features of rapid response and recovery time, high on/off ratio and stable switching cycle performance. Our results imply that the two types of bismuth sulfide nanomaterials are prospective candidates for next generation photodetectors and optoelectronic switches. |
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| Keywords: | Bismuth sulfide Nanomaterials Photodetector PEC cells |
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