Low Voltage driving Vertical Organic Transistors

• Main Authors: Yu-Xiang Chen, 陳宇翔
• Other Authors: Jui-Fen Chang
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/85j7rw

碩士 === 國立中央大學 === 照明與顯示科技研究所 === 107 === This thesis applies colloidal lithography to fabricate vertical organic transistors with low driving voltage. In the study, N-type small-molecule organic semiconductor material carbon sixty (C60) is used to produce high on/off ratio vertical organic transistors which is sufficient to drive the organic light-emitting diode. And demonstrate a vertical organic light emitting transistor achieved by stacking an organic light emitting diode on top of a vertical organic transistor. First, fabricate a top emitting vertical organic light-emitting transistor formed on the SiO2 / Si substrate. Then change the gate to transparent conductive film, ITO, and deposit a high dielectric constant aluminum oxide (Al2O3) as dielectric layer. The device using patterned gold electrode as the source. The colloidal lithography technology can directly stack insulating aluminum oxide (AlOx) above the patterned gold source, further decreasing the off current density and increasing the on/off ratio to an order of magnitude without affecting the open current density. Overall, fabricated a vertical organic transistor capable of driving at a gate voltage of 5 V, while the on-current density close to 102 mA/cm2 and on/off ratio reaches 104. And using this structure to fabricate a substrate side emitting light-emitting transistor. Promising for a transmissivity bidirectional emitting light-emitting transistor in the future.