High-performance Organic Transistor Ammonia Sensor with Laminated Ultrathin Film Structure

Han CHEN; Qi HU; Long-zhen QIU; Xiao-hong WANG

doi:10.37188/CJL.20210107

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High-performance Organic Transistor Ammonia Sensor with Laminated Ultrathin Film Structure

Device Fabrication and Physics | 更新时间：2021-06-18

- High-performance Organic Transistor Ammonia Sensor with Laminated Ultrathin Film Structure
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 6, Pages: 871-879(2021)
- 作者机构：
  
  1.合肥工业大学光电技术研究院，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
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51703047);Distinguished Youth Foundation of Anhui Province(1808085J03);Fundamental Research Funds for the Central Universities(JZ2018HGPB0276;JZ2020YYPY0091)
- DOI：10.37188/CJL.20210107
  CLC：
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Han CHEN, Qi HU, Long-zhen QIU, et al. High-performance Organic Transistor Ammonia Sensor with Laminated Ultrathin Film Structure. [J]. Chinese Journal of Luminescence 42(6):871-879(2021)
DOI：

Han CHEN, Qi HU, Long-zhen QIU, et al. High-performance Organic Transistor Ammonia Sensor with Laminated Ultrathin Film Structure. [J]. Chinese Journal of Luminescence 42(6):871-879(2021) DOI： 10.37188/CJL.20210107.

摘要

研究了基于给-受体共轭聚合物双(2-氧代二氢吲哚-3-亚基) -苯并二呋喃-二酮和联噻吩(PBIBDF-BT) 超薄膜叠层晶体管的电学性能及氨气传感特性。使用相分离方法以及转移-刻蚀步骤制备了不同堆叠层数的PBIBDF-BT超薄膜。系统地研究了PBIBDF-BT超薄膜堆叠层数与器件性能的关系。实验结果表明，单层PBIBDF-BT超薄膜器件对氨气具有良好的传感性能，电学性能较差。超薄膜叠层能够有效提高传感器的电学性能，随着超薄膜叠层数量的增加，器件迁移率不断上升;超薄膜层数增加为3层及更多时迁移率上升趋势变缓，迁移率最大值为0.58 cm,2,·V,-1,·s,-1,。超薄膜叠层器件氨气传感性能在层数为2层后呈现下降趋势。通过PBIBDF-BT超薄膜叠层方法，制备出在1.0×10,-5,氨气环境下，迁移率为0.23 cm,2,·V,-1,·s,-1,、源漏电流变化百分比为90.7%、性能良好的OFET氨气传感器。

Abstract

The electrical properties and the ammonia sensing transistor characteristics of ultrathin film laminated transistors based on donor-acceptor conjugated polymer bis(2-oxoindole-3-ylidene)-benzodifuran-dione and bithiophene(PBIBDF-BT) were studied. The PBIBDF-BT ultrathin films with different stacking layers were prepared by phase separation method and transfer-etching step. The relationship between the number of PBIBDF-BT ultrathin film stacks and the performance of the device were systematically studied. Experimental results indicate that the single-layer PBIBDF-BT ultrathin film device has good sensing performance for ammonia, but the electrical performance is poor. Ultrathin film stacking can effectively improve the electrical performance of the device. As the number of ultrathin film stacks increases, the device mobility increased. When the number of ultrathin film layers increases to 3 layers or more, the increasing trend of mobility slows down and the maximum mobility is 0.58 cm,2,·V,-1,·s,-1,. The ammonia sensing performance of ultrathin film laminate devices shows a downward trend when the number of layers is 2. Through the PBIBDF-BT ultrathin film stacking method, an OFET ammonia gas sensor with good performance was prepared under 1.0×10,-5, ammonia environment, with a mobility of 0.23 cm,2,·V,-1,·s,-1, the source-drain current change percentage of 90.7%.

关键词

有机超薄膜晶体管给体-受体共轭聚合物氨气检测超薄膜叠层

Keywords

organic ultra-thin film transistordonor-acceptor conjugated polymerammonia gas detectionultrathin film stack

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National Engineering Lab of Special Display Technology， National Key Lab of Advanced Display Technology， Academy of Opto-Electronic Technology， Hefei University of Technology

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