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Enhanced Performance of Solution‐Processed TESPE‐ADT Thin‐Film Transistors
Chen, Liang‐,Hsiang,Hu, Tarng‐,Shiang,Huang, Peng‐,Yi,Kim, Choongik,Yang, Ching‐,Hao,Wang, Juin‐,Jie,Yan, Jing‐,Yi,Ho, Jia‐,Chong,Lee, Cheng‐,Chung,Chen WILEY‐VCH Verlag 2013 Chemphyschem Vol.14 No.12
<P><B>Abstract</B></P><P>A solution‐processed anthradithiophene derivative, 5,11‐bis(4‐triethylsilylphenylethynyl)anthradithiophene (TESPE‐ADT), is studied for use as the semiconducting material in thin‐film transistors (TFTs). To enhance the electrical performance of the devices, two different kinds of solution processing (spin‐coating and drop‐casting) on various gate dielectrics as well as additional post‐treatment are employed on thin films of TESPE‐ADT, and <I>p</I>‐channel OTFT transport with hole mobilities as high as ∼0.12 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP> are achieved. The film morphologies and formed microstructures of the semiconductor films are characterized in terms of film processing conditions and are correlated with variations in device performance.</P>
Organic Thin-Film-Transistor Arrays for Active-Matrix Display on Flexible Substrate
Cheng-Chung Lee,Hsiang-Yuan Cheng,Jia-Chong Ho,Tarng-Shiang Hu 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.I
Differently from a traditional inorganic transistor, the organic thin-film transistor can be fabricated at low temperature, so we can choose a light, thin, and cheap plastic substrate to replace glass substrate. Here, an organic thin-film transistor (OTFT) has been formed on plastic substrate. An active-matrix back plate with 64 × 128 pixels has been fabricated to drive a TNLCD. We achieved a field-effect mobility of 0.03 cm2/V·s and on/off current ratio of about 105 for the pentacene OTFT on plastic substrate. Besides vacuum deposition, these properties offer potential methods to fabricate OTFT on flat panel displays, such as spin coating, ink-jet printing, and even a roll-to-roll process.