title: Negative differential resistance and carrier transport of electrically bistable devices based on poly(N-vinylcarbazole)-silver sulfide composites.
abstract: An electrically bistable device has been fabricated based on poly(N-vinylcarbazole) (PVK)-silver sulfide (Ag2S) composite films using a simple spin-coating method. Current-voltage (I-V) characteristics of the as-fabricated devices exhibit a typical electrical bistability and negative differential resistance (NDR) effect. The NDR effect can be tuned by varying the positive charging voltage and the charging time. The maximum current ratio between the high-conducting state (ON state) and low-conducting state (OFF state) can reach up to 104. The carrier transport mechanisms in the OFF and ON states are described by using different models on the basis of the experimental result.
authors.forename: Jiantao
authors.initials: J
authors.lastname: Li
authors.affiliation: Key laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing JiaoTong University, Beijing 100044, China. awtang@bjtu.edu.cn.
authors.forename: Aiwei
authors.initials: A
authors.lastname: Tang
authors.forename: Xu
authors.initials: X
authors.lastname: Li
authors.forename: Yapeng
authors.initials: Y
authors.lastname: Cao
authors.forename: Miao
authors.initials: M
authors.lastname: Wang
authors.forename: Yu
authors.initials: Y
authors.lastname: Ning
authors.forename: Longfeng
authors.initials: L
authors.lastname: Lv
authors.forename: Qipeng
authors.initials: Q
authors.lastname: Lu
authors.forename: Yunzhang
authors.initials: Y
authors.lastname: Lu
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Hu
authors.forename: Yanbing
authors.initials: Y
authors.lastname: Hou
authors.forename: Feng
authors.initials: F
authors.lastname: Teng