Phototransistors and Photoswitches From an Ultraclosely \pi-Stacked Organic Semiconductor

In this letter, high-performance organic phototransistors and photoswitches based on an ultraclosely π-stacked organic semiconductor, i.e., titanyl phthalocyanine, are fabricated. The p-type transistor exhibited high performance with a hole mobility of ~ 4. 5 cm 2 ·V -1 ·s -1 and an on/off ratio hig...

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Bibliographic Details
Published in:IEEE electron device letters 2012-11, Vol.33 (11), p.1619-1621
Main Authors: Ji, Zhuoyu, Shang, Liwei, Lu, Congyan, Wang, Long, Guo, Jingwei, Wang, Hong, Li, Dongmei, Liu, Ming
Format: Article
Language:English
Subjects:
Applied sciences
Charge carrier processes
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Integrated optoelectronics
Integrated optoelectronics. Optoelectronic circuits
Logic gates
Metal phthalocyanine
OFETs
Optical and optoelectronic circuits
Optoelectronic devices
organic field-effect transistor
Organic semiconductors
photoswitch
phototransistor
Phototransistors
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transistors
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Summary:In this letter, high-performance organic phototransistors and photoswitches based on an ultraclosely π-stacked organic semiconductor, i.e., titanyl phthalocyanine, are fabricated. The p-type transistor exhibited high performance with a hole mobility of ~ 4. 5 cm 2 ·V -1 ·s -1 and an on/off ratio higher than 3.1 × 10 7 . Phototransistors exhibited high-photoresponse properties with a responsivity at 10.5 A/W and a photosensitivity up to 2.7 × 10 5 . The high performance of the devices showed their potential application in optoelectronic organic integrated circuits.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2012.2212412