Nanocavity enhancement for ultra-thin film optical absorber

Haomin Song; Luqing Guo; Zhejun Liu; Kai Liu; Xie Zeng; Dengxin Ji; Nan Zhang; Haifeng Hu; Suhua Jiang; Qiaoqiang Gan

doi:10.1002/adma.201305793

Nanocavity enhancement for ultra-thin film optical absorber

Adv Mater. 2014 May;26(17):2737-43, 2617. doi: 10.1002/adma.201305793. Epub 2014 Feb 24.

Authors

Haomin Song¹, Luqing Guo, Zhejun Liu, Kai Liu, Xie Zeng, Dengxin Ji, Nan Zhang, Haifeng Hu, Suhua Jiang, Qiaoqiang Gan

Affiliation

¹ Department of Electrical Engineering, The State University of New York at Buffalo, Buffalo, NY, 14260.

PMID: 24616090
DOI: 10.1002/adma.201305793

Abstract

A fundamental strategy is developed to enhance the light-matter interaction of ultra-thin films based on a strong interference effect in planar nanocavities, and overcome the limitation between the optical absorption and film thickness of energy harvesting/conversion materials. This principle is quite general and is applied to explore the spectrally tunable absorption enhancement of various ultra-thin absorptive materials including 2D atomic monolayers.

Keywords: interference; nanocavity; super absorber; ultra-thin absorbing film.

Publication types

Research Support, Non-U.S. Gov't