Mechanism of conductance switching: An optical investigation |
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| Affiliation: | 1. Indian Association for the Cultivation of Science, Department of Solid State Physics, Jadavpur, Kolkata 700 032, India;2. Rabindra Mahavidyalaya, Department of Physics, Champadanga, Hooghly 712 401, India;1. Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan;2. Toyota Motor Corporation, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan;1. Saint Mary''s University, Halifax, Nova Scotia, Canada B3H 3C3;2. Department of Chemistry, McMaster University, Hamilton, Ontario, Canada L8S 4L8;3. Department of Chemistry and Physics, Mount Saint Vincent University, Halifax, Nova Scotia, Canada B3M 2J6;4. Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3;1. Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, People''s Republic of China;2. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, People''s Republic of China;1. Laboratoire Géoressouces, Matériaux, Environnement et Changements Globaux, Faculté des Sciences de Sfax, Université de Sfax, 3018 Sfax, Tunisia;2. Laboratoire de chimie industrielle, Ecole Nationale d’ingénieurs de Sfax, Université de Sfax, 3018 Sfax, Tunisia;3. Laboratoire des Matériaux et du Génie Physique, 3 Parvis Louis Néel, BP 257, 38016 Grenoble, France |
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| Abstract: | Electronic conductance switching in devices based on thin films of an organic molecule has been studied. Switching between two conducting states has been induced by voltage pulse, while the states have been probed by optical and electrical measurements simultaneously. In situ optical measurements showed that electroreduction of molecules led to conductance switching and appearance of high-conducting state in the device. We could “write” or “erase” a state by applying electrical pulse and “read” it by measuring electronic absorbance and conductivity. The “write” and “read” processes have been carried out for many cycles to exhibit a correspondence between conductance switching and electrochromism. |
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