| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 102 === Organic field-effect transistor devices have gained much attention in recent years attract due to their advantages of flexibility, light weight, solution processibility and low manufacturing cost. The field-effect mobility (μFET) is mainly affected by the organic material in the active layer. The dielectric material is another factor able to influence the mobility value of OFETs. However, some inorganic or organic materials in device are non-environmentally, many electronic litters are generated from inorganic device. Therefore, in this study, we choose natural biological proteins collagen as dielectric material. The advantage of collagen are biocompatible, bioresorbable, biodegradable, and non-toxic.
The experiment was divided into two parts. The first part, cationic surfactant CTMA(Hexadecyltrimethylammonium chloride) were added into collagen and the cationic surfactant CTMA - collagen complexes as gate dielectrics to improve collagen water sensitive and reduce the hydrophilic of collagen, the electrical performance was enhanced. From the experimental results proved that the 3.0wt%-CTMA show an average mobility of 3.36×10-2 cm2V-1s-1 and on/off ratio can reach 2.7×106. Another even more striking is that previously no one used collagen to fabricate transistor type memory. The second part, non-water soluble 1-aminopyrene to be gate electret via CTMA brought into collagen water solution. Collagen-CTMA-1-aminopyrene composite films were used to fabricate OFETs type memory device. From the results, the ranges of bias hysteresis were proportional to contents of 1-aminopyrene means memory performance upgrade also followed content of 1-aminopyrene. Since the collagen belongs biological material. The device in bio-medical sensing or organisms of medical materials can have a very good development in the future.
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