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Organic field-effect transistors based on Langmuir-Blodgett films of substituted phthalocyanines
Liu, YQ; Hu, WP; Qiu, WF; Xu, Y; Zhou, SQ; Zhu, DB
2001-12-01
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
Volume80Issue:3Pages:202-207
AbstractThree substituted phthalocyanines (Pcs), two asymmetrical and one symmetrical, named amino-tri-tert-butyl-phthalocyanine (AmBuPc), 1.8-naphthalimide-tri-tert-butyl-phthalocyanine (NaBuPc), and tetra-iso-propoxy-phthalocyaninato copper(II) (i-Pro-CuPc), were used as semiconductor layers in organic field-effect transistors (OFETs) based on their Langmuir-Blodgett (LB) films. These substituted Pcs possess good solubility in common organic solvents. From the long-wavelength absorption edge of their UV-VIS absorption spectra and their electrochemical data, the highest occupied molecular orbital and the lowest unoccupied molecular orbital were determined and the energy band diagram of their OFETs was deduced. The narrower energy gaps of them indicated stronger electron donor-acceptor ability than other symmetrical Pcs because of the substituents at the peripheral ring. The results of their OFETs demonstrated that the LB films of these substituted Pcs can be used as semiconducting layers of OFETs functioned as p-channel accumulation devices. From the electrical characteristics of their OFETs. the channel carrier mobilities of AmBuPc, NaBuPc and i-Pro-CuPc were calculated to be about 2.84 x 10(-5), 4.42 x 10(-4) and 3.25 x 10(-4) cm(2) V-1 s(-1), respectively. (C) 2001 Elsevier Science B.V. All rights reserved.
KeywordPhthalocyanine Langmuir-blodgett Films Field-effect Transistor Field-effect Mobility
Indexed BySCI
Language英语
WOS IDWOS:000172177800007
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/77176
Collection中国科学院化学研究所
Corresponding AuthorLiu, YQ
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Liu, YQ,Hu, WP,Qiu, WF,et al. Organic field-effect transistors based on Langmuir-Blodgett films of substituted phthalocyanines[J]. SENSORS AND ACTUATORS B-CHEMICAL,2001,80(3):202-207.
APA Liu, YQ,Hu, WP,Qiu, WF,Xu, Y,Zhou, SQ,&Zhu, DB.(2001).Organic field-effect transistors based on Langmuir-Blodgett films of substituted phthalocyanines.SENSORS AND ACTUATORS B-CHEMICAL,80(3),202-207.
MLA Liu, YQ,et al."Organic field-effect transistors based on Langmuir-Blodgett films of substituted phthalocyanines".SENSORS AND ACTUATORS B-CHEMICAL 80.3(2001):202-207.
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