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An Inherent Multifunctional Sellotape Substrate for High‐Performance Flexible and Wearable Organic Single‐Crystal Nanowire Array‐Based Transistors
Author(s) -
Shang Qixun,
Deng Wei,
Zhang Xiujuan,
Wang Liang,
Huang Liming,
Jie Jiansheng
Publication year - 2016
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201600129
Subject(s) - materials science , flexible electronics , electronics , transistor , nanotechnology , photolithography , substrate (aquarium) , microelectronics , fabrication , wearable technology , optoelectronics , wearable computer , computer science , electrical engineering , embedded system , oceanography , voltage , geology , engineering , medicine , alternative medicine , pathology
Sellotape, as a flexible, sticky, and lightweight substrate, can be integrated in electronic devices to realize unprecedented and low‐cost applications, such as biomedical devices, wearable electronics, smart clothes, and sensory skin for robotic system. However, very few works have successfully demonstrated fabricating devices on sellotape substrates, primarily because traditional microelectronic processing techniques, including photolithography, metallization, and lift‐off, are incompatible with sellotape. Here a novel tape‐stripping method is demonstrated for large‐area fabrication of high‐performance flexible and wearable organic nanowire array‐based field‐effect transistors (ONWFETs) on sellotape substrates. The copper phthalocyanine ONWFETs on the tapes exhibit high average mobility (≈1.02 cm 2 V −1 s −1 ) as well as high bending and wearing stability. Furthermore, 3D ONWFET circuitry consisting of five vertically stacked layers is demonstrated. Device geometries and electronic properties are maintained with high fidelity after sequential stacking processes. This is so far the first study of ONWFETs on flexible tapes and their applications in wearable or 3D integrated devices. It is anticipated that the novel tape stripping method may help overcome upcoming difficulties for organic flexible electronics.