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Ultrahigh-Performance Optoelectronic Skin Based on Intrinsically Stretchable Perovskite-Polymer Heterojunction Transistors.
- Source :
-
Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2022 Jan; Vol. 34 (4), pp. e2107304. Date of Electronic Publication: 2021 Dec 16. - Publication Year :
- 2022
-
Abstract
- The optoelectronic skin is acknowledged as the world's current cutting-edge technology in the fields of wearable healthcare monitoring, soft robotics, artificial retinas, and so on. However, the difficulty in preparing stretchable photosensitive polymers and the high-crystallization nature of most reported photosensitive materials (such as perovskites) severely restrict the development of skin-like optoelectronic devices. Herein, a surface energy-induced self-assembly methodology is proposed to form easily transferrable and flexible perovskite quantum dot (PQD) films with a worm-like morphology. Furthermore, intrinsically stretchable phototransistors (ISTPTs) are fabricated based on a stretchable photosensitive layer heterojunction consisting of worm-like PQD films and hybrid polymer semiconductors. The obtained ISTPTs display highly sensitive response to high-energy photons of X-ray (with a detection limit of 79 nGy s <superscript>-1</superscript> , that is 560 times lower than commercial medical chest X-ray diagnosis) and ultraviolet (with photosensitivity of 5 × 10 <superscript>6</superscript> and detectable light intensity of 50 nW cm <superscript>-2</superscript> among the highest performance of reported photodetectors). In addition, these ISTPTs demonstrate desirable e-skin characteristics with high strain tolerance, high sensing specificity, high optical transparency, and good skin conformability. The surface energy-induced self-assembly methodology for the preparation of ISTPTs is a critical demonstration to enable low-cost and high-performance optoelectronic skins.<br /> (© 2021 Wiley-VCH GmbH.)
- Subjects :
- Calcium Compounds
Skin
Titanium
Oxides
Polymers chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1521-4095
- Volume :
- 34
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Publication Type :
- Academic Journal
- Accession number :
- 34796569
- Full Text :
- https://doi.org/10.1002/adma.202107304