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Polymer Ionic Liquid Stabilized Black Phosphorus for Environmental Robust Flexible Optoelectronics
Author(s) -
Hu ChenXia,
Xiao Qi,
Ren YongYuan,
Zhao Min,
Dun GuanHua,
Wu HaoRan,
Li XiangYang,
Yang QiQi,
Sun Bing,
Peng Yong,
Yan Feng,
Wang Qiang,
Zhang HaoLi
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201805311
Subject(s) - black phosphorus , materials science , ionic liquid , fabrication , polymer , flexibility (engineering) , photodetector , layer (electronics) , ionic bonding , optoelectronics , nanotechnology , composite material , organic chemistry , ion , chemistry , catalysis , medicine , alternative medicine , statistics , mathematics , pathology
Black phosphorus (BP) has attracted great attentions in the last few years, but their applications in optoelectronics have been strongly hindered by the poor environmental stability, especially under light irradiation. Herein, the fabrication of surface passivated few‐layer BP assisted by polymer ionic liquids (PILs) is reported. The PIL‐modified 2D BP exhibits excellent stability under ambient conditions, with negligible deterioration in 100 d. Furthermore, the PILs attached on the BP surface provide reliable and flexible electrical contact between the few‐layer BP and other device components. As a proof of concept, PIL‐modified BP nanosheets are successfully applied in flexible photodetectors, which show high flexibility, good detectivity with no obvious performance deterioration in 120 h. This work demonstrates that the PIL modification can endow BP nanosheets with excellent environmental stability and good conductivity, so that may significantly expand the applications of BP in flexible optoelectronics.