摘要
银纳米线薄膜制备工艺简单,与柔性衬底兼容,光电性能优异,被视为最有可能替代传统ITO的柔性透明电极材料之一。银纳米线的细线径、高长径比是提升薄膜光电性能的关键。采用多元醇法制备了银纳米线,研究了AgNO;添加方式、PVP分子量和成核控制剂对银纳米线形貌的影响。通过优化银纳米线的制备工艺,最终获得了线径为35.5 nm的银纳米线,其薄膜方阻低至147.5Ω·sq^(-1),在550 nm处透过率高达96.21%。为了提升银纳米线透明薄膜电极的热稳定性,开发了GZO/AgNWs/GZO“三明治”复合新结构。结果表明,该复合结构电极经过250℃热冲击,不仅仍然保持高透明(550 nm透过率为82.42%),而且方阻的增加值不超过78%。GZO/AgNWs/GZO“三明治”透明电极具有高热稳定性,为银纳米线透明电极的商业化应用提供有益借鉴。
Silver nanowire films are simple to prepare,compatible with flexible substrates and have excellent optoelectronic properties.They are regarded as one of the most likely flexible transparent electrode materials to replace conventional ITO.Small wire diameter and high aspect ratio are the keys to enhancing its optoelectronic performance.The silver nanowires were prepared by the polyol method,and the effects of AgNO;addition method,molecular weight of PVP,and nucleation control agent on the morphology of silver nanowires were investigated.By optimizing the preparation process of silver nanowires,silver nanowires with a wire diameter of 35.5 nm were finally obtained,the sheet resistance was as low as 147.5Ω·sq^(-1),and the transmittance at 550 nm was as high as 96.21%.To improve the thermal stability of silver nanowire transparent thin film electrodes,a new GZO/AgNWs/GZO"sandwich"composite structure was developed.The results showed that the composite structure not only maintained high transparency(transmittance at 550 nm was 82.42%)after thermal shock at 250℃,but also the increase of sheet resistance did not exceed 78%.The GZO/AgNWs/GZO“sandwich”transparent electrode has high thermal stability,which provides a useful reference for the commercial application of silver nanowire transparent electrodes.
作者
姜雅思
姚日晖
邹文昕
吴振宇
张康平
郭晨潇
刘丁荣
侯明玥
宁洪龙
彭俊彪
JIANG Yashi;YAO Ruihui;ZOU Wenxin;WU Zhenyu;ZHANG Kangping;GUO Chenxiao;LIU Dingrong;HOU Mingyue;NING Honglong;PENG Junbiao(State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou 510641,China)
出处
《材料研究与应用》
CAS
2022年第3期376-383,共8页
Materials Research and Application
基金
国家重点研发计划资助项目(2021YFB3600604)
国家自然科学基金项目(22090024,62074059)
广东省基础与应用基础研究重大项目(2019B030302007)
2021年广东省科技创新战略专项资金(“大专项+任务清单”)项目(210908174533730)
季华实验室自主立项项目(X190221TF191)。
关键词
银纳米线
多元醇法
细线径
热稳定性
“三明治”复合新结构
silver nanowires
polyol method
small wire diameter
thermal stability
"sandwich"composite structure
