›› 2015, Vol. 24 ›› Issue (3): 37201-037201.doi: 10.1088/1674-1056/24/3/037201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

曹亚鹏a, 胡煜峰a, 李剑焘a, 叶海航b, 吕龙锋a, 宁宇a, 鲁启鹏a, 唐爱伟b, 娄志东a, 侯延冰a, 滕枫a   

  1. a Key Laboratory of Luminescence and Optical Information, Ministry of Education; Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
    b Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2014-08-19 修回日期:2014-11-05 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61377028), the Natural Science Funds for Distinguished Young Scholar, China (Grant No. 61125505), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2014JBZ009).

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

Cao Ya-Peng (曹亚鹏)a, Hu Yu-Feng (胡煜峰)a, Li Jian-Tao (李剑焘)a, Ye Hai-Hang (叶海航)b, Lü Long-Feng (吕龙锋)a, Ning Yu (宁宇)a, Lu Qi-Peng (鲁启鹏)a, Tang Ai-Wei (唐爱伟)b, Lou Zhi-Dong (娄志东)a, Hou Yan-Bing (侯延冰)a, Teng Feng (滕枫)a   

  1. a Key Laboratory of Luminescence and Optical Information, Ministry of Education; Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
    b Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing 100044, China
  • Received:2014-08-19 Revised:2014-11-05 Online:2015-03-05 Published:2015-03-05
  • Contact: Hu Yu-Feng, Teng Feng E-mail:yfhu@bjtu.edu.cn;fteng@bjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61377028), the Natural Science Funds for Distinguished Young Scholar, China (Grant No. 61125505), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2014JBZ009).

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摘要： N-dodecanethiol capped zinc sulfide (ZnS) 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.

关键词: electrical bistable devices, ON/OFF current ratio, electric-field-induced charge transfer, trapping/detrapping

Abstract: N-dodecanethiol capped zinc sulfide (ZnS) 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.

Key words: electrical bistable devices, ON/OFF current ratio, electric-field-induced charge transfer, trapping/detrapping

中图分类号:  (Conductivity phenomena in semiconductors and insulators)

  • 72.20.-i
73.40.-c (Electronic transport in interface structures) 77.55.dj (For nonsilicon electronics (Ge, III-V, II-VI, organic electronics)) 79.60.Fr (Polymers; organic compounds)