Статья

Three-Dimensional Perovskite Nanopixels for Ultrahigh-Resolution Color Displays and Multilevel Anticounterfeiting

Mojun ChenDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaShiqi HuDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaZhiwen ZhouDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaNan HuangDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaSanghyeon LeeDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaYage ZhangDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaRui ChengDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaJihyuk YangDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaZhaoyi XuDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaYu LiuDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaHeekwon LeeDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaHuan XiaoDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaShien‐Ping FengDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaHo Cheung ShumDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaBarbara Pui ChanDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of ChinaSeung Kwon SeolElectrical-Functionality Materials Engineering, Korea University of Science and Technology (UST), Changwon-si, Gyeongsangnam-do 51543, Republic of KoreaJaeyeon PyoNano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon-si, Gyeongsangnam-do 51543, Republic of KoreaJi Tae KimDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China

2021en

ABI

Аннотация

Hybrid perovskites are emerging as a promising, high-performance luminescent material; however, the technological challenges associated with generating high-resolution, free-form perovskite structures remain unresolved, limiting innovation in optoelectronic devices. Here, we report nanoscale three-dimensional (3D) printing of colored perovskite pixels with programmed dimensions, placements, and emission characteristics. Notably, a meniscus comprising femtoliters of ink is used to guide a highly confined, out-of-plane crystallization process, which generates 3D red, green, and blue (RGB) perovskite nanopixels with ultrahigh integration density. We show that the 3D form of these nanopixels enhances their emission brightness without sacrificing their lateral resolution, thereby enabling the fabrication of high-resolution displays with improved brightness. Furthermore, 3D pixels can store and encode additional information into their vertical heights, providing multilevel security against counterfeiting. The proof-of-concept experiments demonstrate the potential of 3D printing to become a platform for the manufacture of smart, high-performance photonic devices without design restrictions.

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Идентификаторы

DOI: 10.1021/acs.nanolett.1c01261

Цитирования и источники

Цитирований: 3Использованных источников: 0

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