Iodine ion modification enables Ag nanowire film with improved carrier transport properties and stability as high-performance transparent conductor  

作　　者：Jianfang Liu Dongmei Deng Yongjie Ge Yaomengli Xu Moxia Li Bingwu Liu Xidong Duan Yongchun Fu Jiawen Hu 

机构地区：[1]Hunan Key Laboratory of Two-Dimensional Materials,Advanced Catalytic Engineering Research Center of the Ministry of Education,and College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China [2]College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China

出　　处：《Nano Research》2022年第6期5410-5417,共8页纳米研究（英文版）

基　　金：support from the National Natural Science Foundation of China(Nos.21872047,21673070,and 22072039);Hunan Key Laboratory of Two-Dimensional Materials(No.2018TP1010).

摘　　要：Ag nanowire(NW)film is the promising next generation transparent conductor.However,the residual long-chain polyvinylpyrrolidone(PVP,introduced during the synthesis of Ag NWs)layer greatly deteriorates the carrier transport capability of the Ag NW film and as well its long-term stability.Here,we report a one-step I−ion modification strategy to completely replace the PVP layer with an ultrathin,dense layer of I^(−)ions,which not only greatly diminishes the resistance of the Ag NW film itself and that at interface of the Ag NW film and a functional layer(e.g.,a current collect electrode)but also effectively isolates the approaching of corrosive species.Consequently,this strategy can simultaneously improve the carrier transport properties of the Ag NW film and its long-term stability,making it an ideal electric component in diverse devices.For example,the transparent heater and pressure sensor made from the I^(−)-wrapped Ag NW film,relative to their counterparts made from the PVP-wrapped Ag NW film,deliver much improved heating performance and pressure sensing performance,respectively.These results suggest a facile post treatment approach for thin Ag NW film with improved carrier transport properties and long-term stability,thereby greatly facilitating its downstream applications.

关 键 词：Ag nanowire transparent conductor I−ion modification transparent heater pressure sensor 

分 类 号：TB3[一般工业技术—材料科学与工程]