期刊
PHYSICAL REVIEW B
卷 78, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.081301
关键词
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资金
- Ontario Centres of Excellence (OCE)
- National Research Council Canada (NRC)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
In order to provide an accurate theoretical description of current density-voltage (J-V) characteristics of an organic heterojunction device over a wide range of electric fields at various temperatures, it is proposed that an accumulation of charge carrier at the heterojunction will lead to a reduction in the barrier height across the heterojunction. Two well-known hole-tran sporting materials, 4,4 ',4 ''-Tris(N-3-methylphenyl-N-phenyl-amino) triphenylamine (MTDATA) and N,N '-diphenyl-N,N '-bis(l-naphthyl)(1, 1 '-biphenyl)-4,4 ' diamine (NPB), were used to fabricate unipolar heterojunction devices. It is found that the J-V characteristics depend strongly on applied bias. The simulated J-V characteristics of the heterojunction device, with the modified injection model, are found to be in excellent agreement with the experimental data.
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