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1. 合肥工业大学 化学工程学院,安徽 合肥,230009
2. 合肥工业大学 光电技术研究院 特种显示技术教育部重点实验室,特种显示技术国家工程实验室, 现代显示技术省部共建国家重点实验室培育基地,安徽 合肥,230009
收稿日期:2013-01-15,
修回日期:2013-01-31,
网络出版日期:2013-02-25,
纸质出版日期:2013-06-15
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冯翔, 林广庆, 张俊, 李曼菲, 邱龙臻. 去润湿图案化制备TIPS-并五苯有机薄膜晶体管[J]. 液晶与显示, 2013,28(3): 338-343
FENG Xiang, LIN Guang-qing, ZHANG Jun, LI Man-fei, QIU Long-zhen. Wetting/Dewetting Patterned TIPS-Pentacene Organic Thin-Film Transistor[J]. , 2013,28(3): 338-343
冯翔, 林广庆, 张俊, 李曼菲, 邱龙臻. 去润湿图案化制备TIPS-并五苯有机薄膜晶体管[J]. 液晶与显示, 2013,28(3): 338-343 DOI: 10.3788/YJYXS20132803.0338.
FENG Xiang, LIN Guang-qing, ZHANG Jun, LI Man-fei, QIU Long-zhen. Wetting/Dewetting Patterned TIPS-Pentacene Organic Thin-Film Transistor[J]. , 2013,28(3): 338-343 DOI: 10.3788/YJYXS20132803.0338.
利用润湿/去润湿的方法配合旋涂工艺制备了图案化的TIPS-并五苯有机半导体薄膜
制备了顶接触有机薄膜晶体管(OTFTs)。金相显微镜观察发现
转速的选择对TIPS-并五苯薄膜结晶形貌的影响较大。在1 000~2 000 r/min转速下制备的薄膜完整性好
结晶区域较大;而转速增加到3 000 r/min后
难以获得完整的薄膜且晶粒尺寸变小。电学性能研究得到器件的输出曲线、转移曲线、开关电流比、阈值电压、场效应迁移率
发现结晶形貌好的器件具有更好的电学性能。1 000 r/min转速下制备OTFT器件最大场效应迁移率为5.1610
-2
cmV
-1
s
-1
电流开关比为810
3
。
Top-contact organic thin-film transistors array was prepared by slectively dewetting of 6
13-Bis(triisopropylsilylethynyl) pentacene (TIPS-Pentacene) solution. The optical microscope images showed that the morphology of TIPS-pentacene crystal was influenced by the rotation speed. The TIPS-pentacene thin-films prepared at 1 000~2 000 r/min had good connectivity and large crystal domains. As the rotation speed increased to 3 000 r/min
the patterned film became incomplete and the crystal domain size reduced. The output and transfer curve
on/off current ratio
threshold voltage and field-effect mobility of the device were obtained by electric measurements. The TIPS-pentacene OTFTs prepared at 1 000 r/min had a maximum field-effect mobility of up to 5.1610
-2
cmV
-1
s
-1
and an on/off current ratio of 810
3
.
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