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Stretchable colour-sensitive quantum dot nanocomposites for shape-tunable multiplexed phototransistor arrays

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Title
Stretchable colour-sensitive quantum dot nanocomposites for shape-tunable multiplexed phototransistor arrays
Author(s)
Jun-Kyul Song; Junhee Kim; Jiyong Yoon; Ja Hoon Koo; Hyunjin Jung; Kyumin Kang; Sung-Hyuk Sunwoo; Seungwon Yoo; Hogeun Chang; Jinwoung Jo; Woonhyuk Baek; Sanghwa Lee; Mincheol Lee; Hye Jin Kim; Shin, M.; Yoo, Y.J.; Song, Y.M.; Taeghwan Hyeon; Dae-Hyeong Kim; Donghee Son
Publication Date
2022-08
Journal
Nature Nanotechnology, v.17, no.8, pp.849 - 856
Publisher
Nature Research
Abstract
High-performance photodetecting materials with intrinsic stretchability and colour sensitivity are key requirements for the development of shape-tunable phototransistor arrays. Another challenge is the proper compensation of optical aberrations and noises generated by mechanical deformation and fatigue accumulation in a shape-tunable phototransistor array. Here we report rational material design and device fabrication strategies for an intrinsically stretchable, multispectral and multiplexed 5 × 5 × 3 phototransistor array. Specifically, a unique spatial distribution of size-tuned quantum dots, blended in a semiconducting polymer within an elastomeric matrix, was formed owing to surface energy mismatch, leading to highly efficient charge transfer. Such intrinsically stretchable quantum-dot-based semiconducting nanocomposites enable the shape-tunable and colour-sensitive capabilities of the phototransistor array. We use a deep neural network algorithm for compensating optical aberrations and noises, which aids the precise detection of specific colour patterns (for example, red, green and blue patterns) both under its flat state and hemispherically curved state (radius of curvature of 18.4 mm).
URI
https://pr.ibs.re.kr/handle/8788114/12282
DOI
10.1038/s41565-022-01160-x
ISSN
1748-3387
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > 1. Journal Papers (저널논문)
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