图案表面粗糙度对有机分子区域选择性生长的影响  

Effect of patterns' surface roughness on organic molecular area selective growth

作　　者：聂青苗[1] 石亮 汪长超 蒋悦 陈乃波[1] 胡来归 王文冲 鄢波[1] NIE Qingmiao;SHI Liang;WANG Changchao;JIANG Yue;CHEN Naibo;HU Laigui;WANG Wenchong;YAN Bo(College of Science,Zhejiang University of Technology,Hangzhou 310023,China;School of Information Science and Technology,Fudan University,Shanghai 200433,China;Physikalisches Institute and Center for Nanotechnology,Universit t Münster,Münster 10,48149,Germany)

机构地区：[1]浙江工业大学理学院,浙江杭州310023 [2]复旦大学信息科学与技术学院,上海200433 [3]明斯特大学纳米技术物理研究所和中心,威斯特法伦州明斯特10,48149

出　　处：《浙江工业大学学报》2025年第1期52-57,共6页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(62074040);上海市自然科学基金资助项目(20ZR1404000)。

摘　　要：区域选择性生长(ASG),即有机分子在预图案表面上的自组装技术,在有机微/纳米图案化方面具有巨大的发展潜力。为了研究图案表面粗糙度在ASG中的明确作用,在粗粒化各向异性相互作用的动力学蒙特卡罗(KMC)模型中引入了无序强度参数描述图案表面粗糙度,进一步模拟了有机分子在不同表面粗糙度图案上的沉积行为。研究结果表明图案表面粗糙度会影响有机分子沉积形貌:表面越光滑,图案顶部生长的薄膜越厚;相反,当图案表面变得更粗糙时,粒子更倾向于以台阶边缘诱导的方式生长在图案的间隔处,与实验结果高度吻合。由此可见粗糙度可用于控制有机图案的成核分配,以实现不同的应用,如全彩显示器和微透镜阵列。Area selective growth(ASG),self-assembling of molecules on pre-patterned surface,has shown a high potential for micro/nano organic patterns.In order to investigate the specific role of surface roughness of patterns in the ASG,the disorder strength parameters are introduced in the coarse-grained anisotropic interaction Kinetic Monte Carlo(KMC)model,to simulate the depositing behavior of organic molecules on the patterns with different surface roughness.Results revealed that the roughness of the patterns'surface has the effect on the deposit morphology of organic molecules:the smoother surface of the patterns,the thicker films grow on the top of the patterns;on the contrary,when the patterns'surface became rougher,particles were more likely to grow within the intervals of the patterns in a step-edge induced mode,they agree well with experimental results.These indicate that roughness could be employed for the controlling of the nucleation allocation of organic patterns for different various applications,such as full-color displays and micro-lens arrays.

关 键 词：区域选择性生长 动力学蒙特卡罗 有机分子 

分 类 号：O484.1[理学—固体物理] TN304.5[理学—物理]