Organic thin-film transistors in sandwich configuration
Data(s) |
2004
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Resumo |
Organic thin-film transistors (OTFTs) having source/drain electrodes sandwiched between copper phthalocyanine (CuPc) and cobalt phthalocyanine (CoPc) layers, CuPc/CoPc SC OTFTs, are investigated. Comparing their properties with that of CuPc-based top-contact OTFT, field-effect mobility increases from 0.04 to 0.11 cm(2)/Vs, threshold voltage shifts from -13.8 to -8.9 V, and the current on/off ratio maintains at a level of 10(5). A top-contact OTFT with a layer of CuPc and a layer of CoPc (10%)-CuPc mixture reveals that the combination of CuPc and CoPc enhances charge injection from the source electrode into the active layer and increases the off-state current. The sandwich configuration increases the field-effect mobility, reduce the threshold voltage, and improve the on/off ratio at the same time. Our results indicate that using a double-layer of active organic materials in sandwich configuration is an effective way to improve OTFT performance. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhang J;Wang J;Wang HB;Yan DH.Organic thin-film transistors in sandwich configuration,APPLIED PHYSICS LETTERS ,2004,84(1 ):142-144 |
Palavras-Chave | #FIELD-EFFECT TRANSISTORS #VERTICAL-CHANNEL #LAYER |
Tipo |
期刊论文 |