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42.1: Invited Paper: Fully transparent conformal organic thin‐film transistor array and its application as LED front driving
Author(s) -
Tang Qingxin,
Liu Yichun
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12753
Subject(s) - thin film transistor , materials science , optoelectronics , oled , transistor , conformal map , active matrix , transparency (behavior) , semiconductor , layer (electronics) , nanotechnology , computer science , electrical engineering , engineering , mathematical analysis , mathematics , computer security , voltage
Fully transparent conformal thin‐film transistor (TFT) array, that enables adherence onto the flat and curved surfaces without affecting original visual appearance, is the fundamental unit for next‐generation “see‐through” electronics such as transparent displays for car windscreens, LED front driving, and conformal biological devices. Realization of these functions faces one key challenge that requires the development of all components consisting of TFT with excellent flexibility and visual transparency. Organic semiconductor is promising candidate as the active material of transparent conformal transistors because of its advantages in light weight, flexibility, and tunable optoelectronic properties. Until now, however, the colorless fully transparent conformal organic TFT array has not been reported. Here, fully transparent conformal organic TFT array is demonstrated based on the photolithography‐compatible metallic grid gate electrode and the solution‐processed C8‐BTBT film. The resulting TET array exhibits high optical transparency of >80% over the visible spectrum, mobility of 2 cm 2 V −1 s −1 , on/off ratio of 10 5 –10 6 , switching current of >0.1 mA, and excellent light stability. The transparent conformal transistor array is demonstrated to well adhere onto the flat and curved LEDs as front driving. These results present promising applications of the solution‐processed wide‐bandgap organic semiconductor thin films in transparent conformal active‐matrix displays.