Share Email Print
cover

Proceedings Paper

Ambipolar organic phototransistor based on F16CuPc/α6T pn heterojunction
Author(s): Rongbin Ye; Mamoru Baba; Koji Ohta
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We studied the electrical performance of ambipolar organic transistors based on an F16CuPc/α6T pn heterojunction illuminated by a light from a white LED. As the illumination intensity is increased up to ca. 3000 Lux, the hole mobility decreases to about 1/3 while the electron mobility is only slightly increased. Photogeneration carriers (electrons) enhances n-channel operating characteristics, which results a decrease in gate voltage applied to the second active layer (or the increase in gate voltage applied in the depletion layer or the first layer), which suppresses p-channel operating characteristics although the photogeneration carriers (holes) also enhances p-channel operating characteristics. This result implies that the photoinduced charge transfer in the F16CuPc/α6T pn heterojunction devices is mainly dominated by the acceptor semiconductor (F16CuPc). The drain current is significantly increased (n-channel) or decreased (p-channel) by a light, which is used as an additional control parameter making the device interesting for sensor applications.

Paper Details

Date Published: 25 November 2009
PDF: 8 pages
Proc. SPIE 7634, Optical Sensors and Biophotonics, 76341D (25 November 2009); doi: 10.1117/12.851996
Show Author Affiliations
Rongbin Ye, Iwate Univ. (Japan)
Mamoru Baba, Iwate Univ. (Japan)
Koji Ohta, Iwate Univ. (Japan)


Published in SPIE Proceedings Vol. 7634:
Optical Sensors and Biophotonics
Xingde Li; Qingming Luo; Vasilis Ntziachristos; Yoshiaki Yasuno, Editor(s)

© SPIE. Terms of Use
Back to Top