NDLI: Nondestructive measurement of carrier mobility in conductive polymer PEDOT:PSS using Terahertz and infrared spectroscopy

Content Provider	IEEE Xplore Digital Library
Author	Yamashita, M. Otani, C. Okuzaki, H. Shimizu, M.
Copyright Year	2011
Description	Author affiliation: Advanced Science Institute, RIKEN, 519-1399 Aoba, Aramaki, Aoba, Sendai, Miyagi, 980-0845, Japan (Yamashita, M.; Otani, C.) \|\| University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8511 Japan (Okuzaki, H.) \|\| Tokyo Electron, 5-3-1 Akasaka, Minato, Tokyo, 107-6325, Japan (Shimizu, M.)
Abstract	Novel method to evaluate the density and mobility of carriers in conductive polymers is presented. The method utilizes the broadband spectral information of THz and infrared region. Terahertz-time domain spectroscopy revealed that the strong carrier scattering induced the weakly localized carrier behavior in conductive polymer poly(3, 4-ethylenedioxythiophene):poly(styrene sulfonate acid) (PEDOT:PSS) thin films. However, it is impossible to determine the carrier density and mobility uniquely only from the spectral information in THz range (0.1–4THz) when the carrier scattering rate is much larger than the THz frequency. We successfully determine the mobility of carriers in PEDOT:PSS thin films by the simultaneous fitting of THz conductivity and infrared reflectivity spectra. The dc conductivity increase by the secondary doping can be attributed to the mobility enhancement induced by the improvement of the disorder in PEDOT:PSS thin films. Under the assumption of the effective mass m∗=0.3, the obtained carrier mobility of PEDOT:PSS thin film with and without the secondary dopant of ethylene glycol are 9.77 and 0.77 $cm^{2}/Vs,$ respectively.
Starting Page	1
Ending Page	4
File Size	427231
Page Count	4
File Format	PDF
ISBN	9781424451173
e-ISBN	9781424460519
DOI	10.1109/URSIGASS.2011.6050616
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-13
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reflectivity Charge carrier density Conductivity Polymers Optical films Optical reflection
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in