Optimization of Transistor Characteristics and Charge Transport in Solution Processed ZnO Thin Films Grown from Zinc Neodecanoate

Nikhil Tiwale; Satyaprasad P. Senanayak; Juan Rubio-Lara; Yury Alaverdyan; Mark E. Welland

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자료유형: 학술저널

저자정보: Nikhil Tiwale (University of Cambridge) Satyaprasad P. Senanayak (University of Cambridge) Juan Rubio-Lara (University of Cambridge) Yury Alaverdyan (University of Cambridge) Mark E. Welland (University of Cambridge)

저널정보: 대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.15 No.6

발행연도: 2019.1

수록면: 702 - 711 (10page)

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Solution processing of metal oxide-based semiconductors is an attractive route for low-cost fabrication of thin flms devices. ZnO thin flms were synthesized from one-step spin coating-pyrolysis technique using zinc neodecanoate precursor. X-raydifraction (XRD), UV–visible optical transmission spectrometry and photoluminescence spectroscopy suggested conversionto polycrystalline ZnO phase for decomposition temperatures higher than 400 °C. A 15 % precursor concentration was foundto produce optimal TFT performance on annealing at 500 °C, due to generation of sufcient charge percolation pathways. Thedevice performance was found to improve upon increasing the annealing temperature and the optimal saturation mobility of0.1 cm2V−1 s−1 with ION/IOFF ratio~107was achieved at 700 °C annealing temperature. The analysis of experimental resultsbased on theoretical models to understand charge transport envisaged that the grain boundary depletion region is major sourceof deep level traps and their efective removal at increased annealing temperature leads to evolution of transistor performance.

#Zinc oxide · Thin flm transistors · Solution processing · Zinc neodecanoate

참고문헌 (71)

참고문헌 신청

Thomas, S. R. / 2013 / Solution-processable metal oxide semiconductors for thin-film transistor applications / Chem. Soc. Rev 42(16):6910

Yu, X. / 2016 / Metal oxides for optoelectronic applications / Nat. Mater 15(4):383~396

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Schmidt-Mende, L. / 2007 / ZnO – nanostructures, defects, and devices / Mater. Today 10(5):40~48

Adamopoulos, G. / 2011 / Structural and Electrical characterization of ZnO films grown by spray pyrolysis and their application in thinfilm transistors / Adv. Funct. Mater 21(3):525~531

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