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Electrical bistable devices using composites of zinc sulfide nanoparticles and poly-(N-vinylcarbazole)

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【作者】曹亚鹏；胡煜峰；李剑焘；叶海航；吕龙锋；宁宇；鲁启鹏；唐爱伟；娄志东；侯延冰；滕枫；

【Author】 Cao Ya-Peng;Hu Yu-Feng;Li Jian-Tao;Ye Hai-Hang;L Long-Feng;Ning Yu;Lu Qi-Peng;Tang Ai-Wei;Lou Zhi-Dong;Hou Yan-Bing;Teng Feng;Key Laboratory of Luminescence and Optical Information,Ministry of Education,Institute of Optoelectronic Technology,Beijing Jiaotong University;Department of Chemistry,School of Science,Beijing Jiaotong University;

【机构】 Key Laboratory of Luminescence and Optical Information,Ministry of Education,Institute of Optoelectronic Technology,Beijing Jiaotong University； Department of Chemistry,School of Science,Beijing Jiaotong University；

【摘要】 N-dodecanethiol capped zinc sulfide(Zn S) nanocrystals were synthesized by the one-pot approach and blended with poly(N-vinylcarbazole)(PVK) to fabricate electrical bistable devices. The corresponding devices did exhibit electrical bistability and negative differential resistance(NDR) effects. A large ON/OFF current ratio of 104 at negative voltages was obtained by applying different amplitudes of sweeping voltage. The observed conductance switching and the negative differential resistance are attributed to the electric-field-induced charge transfer between the nanocrystals and the polymer,and the charge trapping/detrapping in the nanocrystals.更多还原

【Abstract】 N-dodecanethiol capped zinc sulfide(Zn S) nanocrystals were synthesized by the one-pot approach and blended with poly(N-vinylcarbazole)(PVK) to fabricate electrical bistable devices. The corresponding devices did exhibit electrical bistability and negative differential resistance(NDR) effects. A large ON/OFF current ratio of 104 at negative voltages was obtained by applying different amplitudes of sweeping voltage. The observed conductance switching and the negative differential resistance are attributed to the electric-field-induced charge transfer between the nanocrystals and the polymer,and the charge trapping/detrapping in the nanocrystals.更多还原

【关键词】 electrical bistable devices； ON/OFF current ratio； electric-field-induced charge transfer； trapping/detrapping；
【Key words】 electrical bistable devices； ON/OFF current ratio； electric-field-induced charge transfer； trapping/detrapping；

【基金】 supported by the National Natural Science Foundation of China(Grant No.61377028);the Natural Science Funds for Distinguished Young Scholar,China(Grant No.61125505);the Fundamental Research Funds for the Central Universities,China(Grant No.2014JBZ009)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2015年03期

【分类号】TB33
【被引频次】8
【下载频次】31

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