Chiral 3D structures through multi-dimensional transfer printing of multilayer quantum dot patterns

Geon Yeong Kim, Shinho Kim, Ki Hyun Park, Hanhwi Jang, Moohyun Kim, Tae Won Nam, Kyeong Min Song, Hongjoo Shin, Yemin Park, Yeongin Cho, Jihyeon Yeom, Min Jae Choi, Min Seok Jang, Yeon Sik Jung

Research output: Contribution to journalArticlepeer-review

Abstract

Three-dimensional optical nanostructures have garnered significant interest in photonics due to their extraordinary capabilities to manipulate the amplitude, phase, and polarization states of light. However, achieving complex three-dimensional optical nanostructures with bottom-up fabrication has remained challenging, despite its nanoscale precision and cost-effectiveness, mainly due to inherent limitations in structural controllability. Here, we report the optical characteristics of intricate two- and three-dimensional nanoarchitectures made of colloidal quantum dots fabricated with multi-dimensional transfer printing. Our customizable fabrication platform, directed by tailored interface polarity, enables flexible geometric control over a variety of one-, two-, and three-dimensional quantum dot architectures, achieving tunable and advanced optical features. For example, we demonstrate a two-dimensional quantum dot nanomesh with tuned subwavelength square perforations designed by finite-difference time-domain calculations, achieving an 8-fold enhanced photoluminescence due to the maximized optical resonance. Furthermore, a three-dimensional quantum dot chiral structure is also created via asymmetric stacking of one-dimensional quantum dot layers, realizing a pronounced circular dichroism intensity exceeding 20°.

Original languageEnglish
Article number6996
JournalNature Communications
Volume15
Issue number1
DOIs
StatePublished - Dec 2024

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