Periodic transparent nanowires in ITO film fabricated via femtosecond laser direct writing
飞秒激光直接写入ITO薄膜中周期性透明纳米线
ITO薄膜中の周期的透明ナノワイヤへのフェムト秒レーザの直接書き込み
초속 레이저는 ITO 박막에 주기성 투명 나노선에 직접 기록된다
El láser Femtosegundo escribe directamente en nanocables transparentes periódicos en películas Ito
Le Laser femtoseconde écrit directement dans le nanofil transparent périodique dans le film Ito
Фемтосекундный лазер записывает циклические прозрачные нанолинии прямо в пленку ITO
¹ State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
中国 上海 华东师范大学物理与电子科学学院 精密光谱科学与技术国家重点实验室
² Huawei Technologies Co, Ltd., Bantian Longgang District, Shenzhen 518129, China
中国 深圳 华为技术有限公司
³ Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
中国 太原 山西大学 山西省极端光学协同创新中心
This paper reports the fabrication of regular large-area laser-induced periodic surface structures (LIPSSs) in indium tin oxide (ITO) films via femtosecond laser direct writing focused by a cylindrical lens. The regular LIPSSs exhibited good properties as nanowires, with a resistivity almost equal to that of the initial ITO film.
By changing the laser fluence, the nanowire resistances could be tuned from 15 to 73 kΩ/mm with a consistency of ±10%. Furthermore, the average transmittance of the ITO films with regular LIPSSs in the range of 1200–2000 nm was improved from 21% to 60%. The regular LIPSS is promising for transparent electrodes of nano-optoelectronic devices—particularly in the near-infrared band.
