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

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

Juan Carlos Ferrer, José Luis Alonso, Susana Fernández de Ávila

Sensors (Basel). 2014 Mar 6;14(3):4484-94.

PMID: 24662451

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP156074985	Poly(3-hexylthiophene-2,5-diyl)		156074-98-5	Price

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