Directly Probing Light Absorption Enhancement of Single Hierarchical Structures with Engineered Surface Roughness

Wang, Jingwei1; Shi, Run1; Wang, Weijun1; Cai, Nianduo1; Chen, Pengcheng1; Kong, Dejun1; Amini, Abbas2; Cheng, Chun1

2018-08-16

10.1038/s41598-018-29652-8

Scientific Reports   影响因子和分区

2045-2322

Hierarchical nanostructures are ideal architectures to harvest solar energy. The understanding of light absorption in single hierarchical structures is emergently important and greatly helpful in enhancing multiscale optical phenomena and light management. However, due to the geometrical complexity of hierarchical architectures, theoretical and experimental studies of light absorption have faced significant challenges. Here, we directly quantify light absorption in single hierarchical structures for the first time by utilizing VO2-based near field powermeter. It is found that light trapping is significantly enhanced in rough microwires when the roughness amplitude is comparable to the incident light wavelength. The roughness enhanced light absorption is verified as a general phenomenon on both VO2 and Si hierarchical structures. Therefore, our work not only provides a simple and quantitative method of measuring light absorption upon single geometrically complex structures in micro/nanoscale, but also contributes a general rule to rationally design of hierarchical structures for enhanced performance in photoelectric and photochemical applications.

SCI

英语

第一 ; 通讯

Student Innovation Training Program[2017X40]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000441775900047

NATURE PUBLISHING GROUP

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Western Sydney Univ, Ctr Infrastruct Engn, Kingswood, NSW 2751, Australia

Wang, Jingwei,Shi, Run,Wang, Weijun,et al. Directly Probing Light Absorption Enhancement of Single Hierarchical Structures with Engineered Surface Roughness[J]. Scientific Reports,2018,8.

Wang, Jingwei.,Shi, Run.,Wang, Weijun.,Cai, Nianduo.,Chen, Pengcheng.,...&Cheng, Chun.(2018).Directly Probing Light Absorption Enhancement of Single Hierarchical Structures with Engineered Surface Roughness.Scientific Reports,8.

Wang, Jingwei,et al."Directly Probing Light Absorption Enhancement of Single Hierarchical Structures with Engineered Surface Roughness".Scientific Reports 8(2018).