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The Effect of Magnetic Field on Thick Ir(ppy) _{\bf 3} : Ir(mpp) _{\bf 3} Nonmagnetic Organic Transistor With Improved Performance by Film Deposition on Heated Substrate

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5 Author(s)
bin Mohd Yusoff, A.R. ; Dept. de Fis., Univ. Fed. do Parana, Curitiba, Brazil ; Ying Song ; Holz, E. ; Schulz, D.
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In this paper, we examined the influence of magnetic field with different substrate temperatures during the deposition of the Ir(ppy):Ir(mpp) blend layer heterojunction organic nonmagnetic organic transistor. It is shown that substrate heating treatment during evaporation leads to a significant improvement in the nonmagnetic metal-base transistor performance mainly due to an increase in current gain and ON-to-OFF current ratio. This is attributed to the improvement of thermal energy. Upon heating the substrate to 110°C in the presence of magnetic field, current gain and ON-to-OFF current ratio of 281 and 3.30 × 106 were obtained compared to 219 and 2.06 × 106 for an identical device prepared at 26°C, respectively. Magnetocurrent effect of ~28% was obtained with applied 2 T and 110°C.

Published in:

Nanotechnology, IEEE Transactions on  (Volume:11 ,  Issue: 1 )

Date of Publication:

Jan. 2012

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