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Wafer‐Scale Coplanar Electrodes for 3D Conformal Organic Single‐Crystal Circuits
Author(s) -
Zhao Xiaoli,
Tong Yanhong,
Tang Qingxin,
Liu Yichun
Publication year - 2015
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.201500239
Subject(s) - materials science , electronics , optoelectronics , electronic circuit , electrode , wafer , transistor , flexible electronics , field effect transistor , nanotechnology , electrical engineering , voltage , chemistry , engineering
Conformal organic single‐crystal circuit on 3D curved surfaces, which can provide sensory and scanning features for monitoring, biofeedback, and tracking of physiological function, presents one of the most promising technologies for high‐performance wearable and implantable electronics. However, the present organic single‐crystal circuits remain limited on rigid planar substrates, by the lack of fabrication techniques for mechanically elastic and flexible electrodes to conform to 3D curved surfaces. Here, a novel electrode design for the formation of a wafer‐scale coplanar electrode, together with only one individual flexible rubrene nanobelt, to achieve the 3D conformal single‐crystal transistors and circuits for the first time is proposed. Excellent electrical properties with device yield as high as 93.2%, field‐effect mobility up to 23.9 cm 2 V −1 s −1 , near‐zero threshold voltage, inverter gain over 23, and the extreme circuit stability with zero hysteresis are shown. The results open up the capability of organic single crystals for conformal circuits and reveal the strong potential of the new‐type electrode for future large‐scale wearable and implantable electronics.