液晶与显示2016，Vol.31Issue(7)：643-648,6.DOI:10.3788/YJYXS20163107.0643
基于PVK/PbS纳米晶有机无机复合薄膜电双稳器件性能研究
Organic/inorganic composite electrical bistable devices based on composite of poly(N-vinylcarbazole)and lead sulfide nanocrystals
摘要
Abstract
An organic / inorganic composite electrical bistable device has been fabricated by utilizing hybrid lead sulfide (PbS)nanocomposite and poly(N-vinylcarbazole)(PVK)film.And the device per-formance has been tested in order to analyze the charge transport mechanism.First,the cube-shaped PbS nanocrystals were synthesized by the thermal injection method,then electrical bistable device was fabricated by utilizing composite of poly(N-vinylcarbazole)and lead sulfide nanocrystals as the active layer.The device exhibits significant electrical bistability and repeatable operation of “read-write-read-erase”is also achieved.The maximum current ratio between the high-conducting state (ON state)and low-conducting state (OFF state)can reach up to 10 4 .The carrier transport mechanisms in the posi-tive voltage region of the ON state and OFF state are described by using different conduction models, respectively.The observed conductance switching is attributed to the electric-field-induced charge transfer between the nanocrystals and the polymer,and charge trapping/detrapping in the nanocrys-tals.关键词
有机无机复合薄膜/电双稳器件/开关比/PbS 纳米晶Key words
organic-inorganic nanocomposite films/electrical bistable devices/ON/OFF current ratio/PbS nanocrystals分类
数理科学引用本文复制引用
刘娟,李云白,侯延冰,王越,吕龙峰..基于PVK/PbS纳米晶有机无机复合薄膜电双稳器件性能研究[J].液晶与显示,2016,31(7):643-648,6.基金项目
国家自然科学基金(No．61475017,No．61275 175) Supported by National Natural Science Foundation of China(No．61475017,No．61275 175) （No．61475017,No．61275 175）
