Abstract

Self-assembled two-dimensional (2D) colloidal crystals (CCs) are utilized in various optical devices, lasers, biosensors, and light harvesting applications. Optical design tuning capabilities, in terms of sphere refractive index and diameter size, can influence the optical characteristics for the close-packed single-layer or multilayer structures. Often transmission dips in 2D CCs are observed, which cannot be explained by Bragg diffraction as it does for 3D photonic crystals. In this work, an analytical attempt to accurately model the transmission dips observed in the 2D CCs optical spectra is presented, aiming to explain the origin of these dips. The formation of a broad dip was studied experimentally as well. A less than 1% mismatching error was found between experiment and theory for the two blaze peak positions as well as for the transmission intensity ratio. Finally, the 2D CCs were integrated in mesostructured solar cells as light trapping structures.

© 2021 Optical Society of America

Modeling disorder in two-dimensional colloidal crystals based on electron microscope measurements

Sameh O. Abdellatif, Khaled Kirah, Daniel Erni, and Frank Marlow
Appl. Opt. 59(33) 10432-10440 (2020)

Controlling the quality of SiO₂ colloidal crystals by temperature ramping on the vertical convective self-assembly method

Octavio A. Castañeda-Uribe, Henry A. Méndez-Pinzón, and Juan C. Salcedo-Reyes
Opt. Mater. Express 11(8) 2686-2699 (2021)

Optical transmission of planar metallic films coated by two-dimensional colloidal crystals

Haiyang Lu, Chaojun Tang, Wei Du, Fanxin Liu, Yue Xing, Peng Zhan, Zhuo Chen, and Zhenlin Wang
Opt. Express 22(10) 11698-11706 (2014)

Optical transmission of corrugated metal films on a two-dimensional hetero-colloidal crystal

Zhengqi Liu, Jinting Hang, Jing Chen, Zhendong Yan, Chaojun Tang, Zhuo Chen, and Peng Zhan
Opt. Express 20(8) 9215-9225 (2012)

Two-dimensional colloidal crystal corrugated waveguides

Yang Zhao and Ivan Avrutsky
Opt. Lett. 24(12) 817-819 (1999)