Photonic Nanostructures Patterned by Thermal Nanoimprint Directly into Organo-Metal Halide Perovskites

Neda Pourdavoud; Si Wang; André Mayer; Ting Hu; Yiwang Chen; André Marianovich; Wolfgang Kowalsky; Ralf Heiderhoff; Hella-Christin Scheer; Thomas Riedl

doi:10.1002/adma.201605003

Photonic Nanostructures Patterned by Thermal Nanoimprint Directly into Organo-Metal Halide Perovskites

Adv Mater. 2017 Mar;29(12). doi: 10.1002/adma.201605003. Epub 2017 Jan 19.

Authors

Affiliations

¹ Institute of Electronic Devices, University of Wuppertal, Rainer-Gruenter-Str. 21, 42119, Wuppertal, Germany.
² Microstructure Engineering, University of Wuppertal, Rainer-Gruenter-Str. 21, 42119, Wuppertal, Germany.
³ College of Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.
⁴ Institut für Hochfrequenztechnik, Technische Universität Braunschweig, Schleinitzstr. 22, 38106, Braunschweig, Germany.

PMID: 28102599
DOI: 10.1002/adma.201605003

Abstract

Photonic nanostructures are created in organo-metal halide perovskites by thermal nanoimprint lithography at a temperature of 100 °C. The imprinted layers are significantly smoothened compared to the initially rough, polycrystalline layers and the impact of surface defects is substantially mitigated upon imprint. As a case study, 2D photonic crystals are shown to afford lasing with ultralow lasing thresholds at room temperature.

Keywords: Bragg resonators; lasers; organo-lead halide perovskites; photonic crystals; thermal nanoimprint lithography.