Ambient Light Organic Sensor in a Printed Complementary Organic TFT Technology on Flexible Plastic Foil
Circuits and Systems I: Regular Papers, IEEE Transactions （2014）
摘要
This paper presents an organic sensor for ambient light monitoring fabricated on flexible plastic foil. The sensor exploits an organic photodiode whose photocurrent is linearly converted into an output voltage by a transconductance operational amplifier in a feedback configuration. The photodiode is based on an inkjet printed bulk heterojunction blend of P3HT/PCBM sandwiched between Au and Al electrodes, whereas the amplifier is implemented in a printed complementary organic TFT technology. Both the photodiode and the amplifier were fully characterized in stand-alone configuration. Then, the response of the assembled sensor was measured by using a commercial 12-V halogen lamp as light source. Experimental data demonstrated that the sensor is able to provide a linear detection of the incident light intensity up to 11000 lux.
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关键词
flexible electronics,ink jet printing,operational amplifiers,optical sensors,photoconductivity,photodiodes,polymer blends,thin film transistors,Al,Au,P3HT-PCBM blend,ambient light organic sensor,feedback configuration,flexible plastic foil,halogen lamp source,inkjet printed bulk heterojunction,organic photodiode,photocurrent,printed complementary organic TFT technology,stand-alone configuration,transconductance operational amplifier,voltage 12 V,Current-to-voltage (${rm I}$/${rm V}$) converter,foil bonding,organic circuits,pentacene,photodiode (OPD),thin film transistor (TFT),transconductance operational amplifier (OTA)
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