Fabrications of twisted moiré photonic crystal and random moiré photonic crystal and their potential applications in light extraction

Khadijah Alnasser; Shan Li; Siraj Sidhik; Steve Kamau; Jin Hou; Noah Hurley; Ayman Alzaid; Sicheng Wang; Hao Yan; Jiangdong Deng; Mohammad A Omary; Aditya D Mohite; Jingbiao Cui; Yuankun Lin

doi:10.1088/1361-6528/ad024a

Fabrications of twisted moiré photonic crystal and random moiré photonic crystal and their potential applications in light extraction

Nanotechnology. 2023 Oct 26;35(2). doi: 10.1088/1361-6528/ad024a.

Authors

Khadijah Alnasser¹, Shan Li², Siraj Sidhik³, Steve Kamau¹, Jin Hou³, Noah Hurley¹, Ayman Alzaid⁴, Sicheng Wang², Hao Yan², Jiangdong Deng⁵, Mohammad A Omary², Aditya D Mohite^{6

7}, Jingbiao Cui¹, Yuankun Lin^{1

8}

Affiliations

¹ Department of Physics, University of North Texas, Denton, TX, United States of America.
² Department of Chemistry, University of North Texas, Denton, TX, United States of America.
³ Department of Materials Science and NanoEngineering, Rice University, Houston, TX, United States of America.
⁴ Department of Computer Science, New Mexico State University, Las Cruces, NM 88003, United States of America.
⁵ Center for Nanoscale Systems, Harvard University, Cambridge, MA 02138, United States of America.
⁶ Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, United States of America.
⁷ Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, TX, United States of America.
⁸ Department of Electrical Engineering, University of North Texas, Denton, TX, United States of America.

PMID: 37820638
DOI: 10.1088/1361-6528/ad024a

Abstract

Twisted moiré photonic crystal is an optical analog of twisted graphene or twisted transition metal dichalcogenide bilayers. In this paper, we report the fabrication of twisted moiré photonic crystals and randomized moiré photonic crystals and their use in enhanced extraction of light in light-emitting diodes (LEDs). Fractional diffraction orders from randomized moiré photonic crystals are more uniform than those from moiré photonic crystals. Extraction efficiencies of 76.5%, 77.8% and 79.5% into glass substrate are predicted in simulations of LED patterned with twisted moiré photonic crystals, defect-containing photonic crystals and random moiré photonic crystals, respectively, at 584 nm. Extraction efficiencies of optically pumped LEDs with 2D perovskite (BA)₂(MA)_n-1Pb_nI_3n+1ofn= 3 and (5-(2'-pyridyl)-tetrazolato)(3-CF₃-5-(2'-pyridyl)pyrazolato) platinum(II) (PtD) have been measured.

Keywords: 2D perovskite; E-beam lithography; light extraction efficiency; random moiré photonic crystal; twisted moiré photonic crystal.