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Effect of CuPc and MoO3 co-evaporated layer on the conductivity of organic light emitting diodes.
- Source :
- Chinese Physics B; Sep2015, Vol. 24 Issue 9, p1-1, 1p
- Publication Year :
- 2015
-
Abstract
- Devices with copper phthalocyanine (CuPc):molybdenum trioxide (MoO<subscript>3</subscript>) co-evaporated layer were fabricated and the current–voltage (I–V) and capacitance–voltage (C–V) characteristics were measured. It has been found that for a given voltage, the current of the device with a co-evaporated layer is higher than those without the co-evaporated layer and it reaches the highest value if the ratio of MoO<subscript>3</subscript> to CuPc is 1:1. Meanwhile, the C–V characteristics showed that only free holes exist in the function layer consisting of pure CuPc. However, charge transfer (CT) complexes exist in the function layer of a CuPc:MoO<subscript>3</subscript> mixture. The charge transfer complexes do not contribute to the transport of the device efficiently under low applied fields but are disassociated into free carriers rapidly at applied fields higher than 1.7 × 10<superscript>5</superscript> V/cm, which greatly increases the conductivity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 24
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 109341655
- Full Text :
- https://doi.org/10.1088/1674-1056/24/9/097201