Ammonia Sensitivity Enhancement of Organic Thin Film Transistors by Slit Structure

• Main Authors: Ji, Wei-Kang, 季維康
• Other Authors: Chen, Huang-Ming
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/50006283483744254744

碩士 === 國立交通大學 === 顯示科技研究所 === 99 === In this research, we fabricated an OTFT device with TiOPc active layer to sense the ammonia. The TiOPc powder was deposited to a triclinic phase II crystal of titanyl phthalocyanine (α-TiOPc) film to obtain a π–π molecular packing. The device can sense 0.5 ppm ammonia in the air. Additionally, The TiOPc TFT used slit structures to enhance the ammonia sensitivity. In our study, we improve the TiOPc TFT with a high ammonia sensitivity and selectivity. The TiOPc TFT can detect 0.5 ppm ammonia in room temperature and it can let liver patient apply to detection. Finally, we fabricate the TiOPc TFT on flexible substrate to sense ammonia. The characteristics of the TiOPc TFT on flexible substrate is stable even the TiOPc TFT is bent in 1 cm of curvature.