TY - GEN
T1 - The influence of molecular weight on the microstructure and thin film transistor characteristics of pBTTT polymers
AU - Hamilton, Rick
AU - Bailey, Clare
AU - Duffy, Warren
AU - Heeney, Martin
AU - Shkunov, Maxim
AU - Sparrowe, David
AU - Tierney, Steve
AU - McCulloch, Lain
AU - Joseph Kline, R.
AU - DeLongchamp, Dean M.
AU - Chabinyc, Michael
PY - 2006
Y1 - 2006
N2 - A common strategy to improve the electrical performance of organic field effect transistors is to optimize the charge carrier mobility of the semiconducting thin film. Polymer semiconductor transport properties have shown a dependence on the chain length, due principally to the strong influence of molecular weight on the thin film microstructure. In this work, we report on a study of the influence of increasing molecular weight of poly(2,5-bis(3- docecylthiophen-2-yl)thieno[3,2-6]thiophenes) (pBTTT-C12) on the polymer bulk thermal properties, thin film microstructure and the electrical performance of thin film field effect transistor devices. Clear differences can be observed within a number average molecular weight range of 8,000 - 18,000 Dalton. A Liquid crystalline phase was only observed at the highest molecular weight, different thin film morphology was observed within the molecular weight range, and the field effect mobility was shown to increase with increasing molecular weight.
AB - A common strategy to improve the electrical performance of organic field effect transistors is to optimize the charge carrier mobility of the semiconducting thin film. Polymer semiconductor transport properties have shown a dependence on the chain length, due principally to the strong influence of molecular weight on the thin film microstructure. In this work, we report on a study of the influence of increasing molecular weight of poly(2,5-bis(3- docecylthiophen-2-yl)thieno[3,2-6]thiophenes) (pBTTT-C12) on the polymer bulk thermal properties, thin film microstructure and the electrical performance of thin film field effect transistor devices. Clear differences can be observed within a number average molecular weight range of 8,000 - 18,000 Dalton. A Liquid crystalline phase was only observed at the highest molecular weight, different thin film morphology was observed within the molecular weight range, and the field effect mobility was shown to increase with increasing molecular weight.
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U2 - 10.1117/12.682874
DO - 10.1117/12.682874
M3 - Conference contribution
AN - SCOPUS:33751393976
SN - 0819464155
SN - 9780819464156
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Organic Field-Effect Transistors V
T2 - Organic Field-Effect Transistors V
Y2 - 13 August 2006 through 15 August 2006
ER -