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Ultrahigh-resolution full-color perovskite nanocrystal patterning for ultrathin skin-attachable displays

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Title
Ultrahigh-resolution full-color perovskite nanocrystal patterning for ultrathin skin-attachable displays
Author(s)
Kwon, Jong Ik; Park, Gyuri; Lee, Gwang Heon; Jang, Jae Hong; Sung, Nak Jun; Kim, Seo Young; Yoo, Jisu; Lee, Kyunghoon; Ma, Hyeonjong; Karl, Minji; Shin, Tae Joo; Song, Myoung Hoon; Yang, Jiwoong; Moon Kee Choi
Publication Date
2022-10
Journal
Science advances, v.8, no.43
Publisher
NLM (Medline)
Abstract
High-definition red/green/blue (RGB) pixels and deformable form factors are essential for the next-generation advanced displays. Here, we present ultrahigh-resolution full-color perovskite nanocrystal (PeNC) patterning for ultrathin wearable displays. Double-layer transfer printing of the PeNC and organic charge transport layers is developed, which prevents internal cracking of the PeNC film during the transfer printing process. This results in RGB pixelated PeNC patterns of 2550 pixels per inch (PPI) and monochromic patterns of 33,000 line pairs per inch with 100% transfer yield. The perovskite light-emitting diodes (PeLEDs) with transfer-printed active layers exhibit outstanding electroluminescence characteristics with remarkable external quantum efficiencies (15.3, 14.8, and 2.5% for red, green, and blue, respectively), which are high compared to the printed PeLEDs reported to date. Furthermore, double-layer transfer printing enables the fabrication of ultrathin multicolor PeLEDs that can operate on curvilinear surfaces, including human skin, under various mechanical deformations. These results highlight that PeLEDs are promising for high-definition full-color wearable displays.
URI
https://pr.ibs.re.kr/handle/8788114/12648
DOI
10.1126/sciadv.add0697
ISSN
2375-2548
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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