Next Article in Journal / Special Issue
Influence of Surface Position along the Working Range of Conoscopic Holography Sensors on Dimensional Verification of AISI 316 Wire EDM Machined Surfaces
Previous Article in Journal / Special Issue
An Interactive Tool for Outdoor Computer Controlled Cultivation of Microalgae in a Tubular Photobioreactor System
Article Menu

Export Article

Open AccessArticle
Sensors 2014, 14(3), 4484-4494; https://doi.org/10.3390/s140304484

Electrical Characterization of Photodetectors Based on Poly(3-hexylthiophene-2,5-diyl) Layers

Área de Electrónica, Universidad Miguel Hernández, Av. Universidad s/n, Ed. Quorum V, Elche 03202, Spain
*
Author to whom correspondence should be addressed.
Received: 23 December 2013 / Revised: 28 February 2014 / Accepted: 3 March 2014 / Published: 6 March 2014
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2013)
Full-Text   |   PDF [790 KB, uploaded 21 June 2014]

Abstract

This paper presents the electrical characteristics of solution-processed organic photodetectors based on poly(3-hexylthiophene-2,5-diyl) semiconducting polymer layers deposited by spin-coating on interdigitated metal electrodes. Four different electrode shapes have been used for this study in order to appraise the optimum electrode geometry. The measurement of the resistance as a function of the temperature reveals a transition from negative to positive temperature coefficient material around 80 °C for the polymer layers. Besides, slow reversible changes in the photodetectors conductivity were observed when moved from vacuum to the air and under illumination with a xenon lamp, which can be explained by the formation of charge transfer complexes with molecular oxygen and the polymer. The photogenerated current-light power ratio was found to be approximately linear in the 200 to 550 mW/cm2 range. View Full-Text
Keywords: photodetectors; conducting polymers; P3HT; organic devices photodetectors; conducting polymers; P3HT; organic devices
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ferrer, J.C.; Alonso, J.L.; de Ávila, S.F. Electrical Characterization of Photodetectors Based on Poly(3-hexylthiophene-2,5-diyl) Layers. Sensors 2014, 14, 4484-4494.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top