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2. 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, 合肥工业大学 光电技术研究院, 安徽 合肥 230009, E-mail:chenshiqin
3. 合肥工业大学 化学工程学院,安徽 合肥,230009
收稿日期:2012-04-11,
修回日期:2012-05-21,
纸质出版日期:2012-10-15
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陈世琴, 陈梦婕, 邱龙臻. 石墨烯电极有机薄膜晶体管研究[J]. 液晶与显示, 2012,(5): 595-598
CHEN Shi-qin, CHEN Meng-jie, QIU Long-zhen. Organic Thin-Film Transistor Based on Graphene Electrodes[J]. , 2012,(5): 595-598
利用化学气相沉积法生长的高性能的层状石墨烯
通过转移和图案化后用作电极
制备了底接触的并五苯有机薄膜晶体管(OTFTs)。原子力显微镜观察发现
石墨烯电极的厚度比一般的金电极薄的多
所以石墨烯电极厚度对并五苯晶粒的生长影响不大。电学性能研究得到器件的输出和转移曲线、开关电流比、阈值电压、场效应迁移率。转移曲线的关态电流约为10
-9
A
电流的开关比超过10
3
。基于底接触的并五苯OTFTs的最大场效应迁移率约2×10
-2
cm
2
·V
-1
·s
-1
。
High-performance bottom-contact pentacene OTFTs with graphene source/drain electrodes by transferring and patterning CVD-grown graphene films in a room-temperature process has been developed. The AFM images show that the growth of pentacene grains was not affected by the electrode
because patterned graphene electrodes were significantly thinner compared to common metal electrodes. The output and transfer curve
on/off current ratio
threshold voltage and field-effect mobility of the device were obtained by electric mea-surements. The transfer curve showed an off-current level of ≈10
9
A and an on/off current ratio exceeding 10
3
. The bottom-contact pentacene OTFTs based on graphene source/drain electrodes had a maximum field-effect mobility of up to 2×10
-2
cm
2
·V
-1
·s
-1
.
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Bae S, Kim H, Lee Y, et al. Roll-to-roll production of 30-inch graphene films for transparent electrodes [J]. Nat. Nanotechnol., 2010, 5(8):574-578.
Lee S, Jo G, Kang S-J, et al. Enhanced charge injection in pentacene field-effect transistors with graphene electrodes [J]. Adv. Mater., 2011, 23(1):100-105.
Jang S, Jang H, Lee Y, et al. Flexible, transparent single-walled carbon nanotube transistors with graphene electrodes [J]. Nanotechnol, 2010, 21:425201.
Kim S, Jeong H Y, Kim S K, et al. Flexible memristive memory array on plastic substrates [J]. Nano Lett., 2011, 11(12):5438-5442.
Kang S J, Kim B, Kim K S, et al. Inking elastomeric stamps with micro-patterned, single layer graphene to create high-performance OFETs [J]. Adv. Mater., 2011, 23(31):3531-3535.
Lee W H, Park J, Sim S H, et al. Transparent flexible organic transistors based on monolayer graphene electrodes on plastic [J]. Adv. Mater., 2011, 23(15):1752-1756.
庞渊源.石墨烯在半导体光电器件中的应用 [J]. 液晶与显示, 2011, 26(3):296-300
Xu M S, M Nakamura, M Sakai, et al. High-performance bottom-contact organic thin-film transistors with controlled molecule-crystal/electrode interface [J]. Adv. Mater., 2007, 19(3):371-375.
X Li, Y Zhu, W Cai, et al. Transfer of large-area graphene films for high-performance transparent conductive electrodes [J]. Nano Lett., 2009, 9 (12):4359-4363.
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