Journal ArticleDOI
Photo-Response of Low Voltage Flexible TIPS-Pentacene Organic Field-Effect Transistors
TLDR
In this paper, photo-response of solution processed flexible TIPS-pentacene organic field effect transistors is evaluated under illumination with visible light of red, green, and blue colors having minimum wavelengths of 620, 520, and 460 nm.Abstract:
Photo-response of solution processed flexible TIPS-pentacene organic field-effect transistors is evaluated under illumination with visible light of red, green, and blue colors having minimum wavelengths of 620, 520, and 460 nm. For −10 V operation, pristine photo-OFETs exhibited average field-effect mobility of 0.11 cm $^{2}\text{V}^{-1}\text{s}^{-1}$ , near zero threshold voltage, and current ON–OFF ratio of ~105. These photo-OFETs exhibited prevalent photovoltaic characteristics with shift in the threshold voltage upon illumination, which was found to increase with rising intensity, illumination time, and gate bias during illumination. For low-voltage operation at −5 V, maximum current modulation of $4\times 10^{4}$ and 102, and photo-responsivity of 17 mA/W and 35 mA/W, respectively, were achieved for blue (intensity of 1.7 mW/cm2) and green (intensity of 0.4 mW/cm2) light illuminations. However, these photo-OFETs did not show significant response to red light. A fast dynamic response to periodic pulses of illumination was also observed. For a gate bias of +10 V and illumination time of 500 s, maximum current modulation of 105 was achieved for blue light illumination.read more
Citations
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Journal ArticleDOI
Interdigitated Ambipolar Active Layer for Organic Phototransistor with Balanced Charge Transport
Journal ArticleDOI
Multifunctional Flexible Organic Transistors with a High-k/Natural Protein Bilayer Gate Dielectric for Circuit and Sensing Applications
TL;DR: In this paper , the authors used gelatin, a natural biopolymer gate dielectric, and TIPS-pentacene as an organic semiconductor to achieve a low leakage current and low-voltage operation.
Journal ArticleDOI
Effect of UV irradiation on solution processed low voltage flexible organic field-effect transistors
TL;DR: In this article, the effect of ultra-violet (UV) irradiation on the electrical characteristics of solution processed flexible TIPS-pentacene organic field effect transistors (OFETs) has been investigated.
Journal ArticleDOI
TIPS-pentacene/Copper (II) phthalocyanine bi-layer photo sensitive organic field-effect transistors
Ajay Kumar Mahato,Vivek Raghuwanshi,Deepak Bharti,Ishan Varun,Narottam Prasad,Mahesh Saran Roy,Shree Prakash Tiwari +6 more
TL;DR: In this article, a combination of a thin layer of copper (II) phthalocyanine (CuPc) and TIPS-pentacene crystal was used to enhance the photo-sensing spectrum of photo-sensitive organic field effect transistors (photo-OFETs).
Journal ArticleDOI
Influence of molecular weight of polymer dielectric on the photo-response of solution-processed OFETs
Ajay Kumar Mahato,Deepak Bharti,Pulkit Saxena,Vivek Raghuwanshi,Ishan Varun,Shree Prakash Tiwari +5 more
TL;DR: In this paper, the crucial role of molecular weight of the polymer dielectric in regulating the electrical performance and photo-response of TIPS-pentacene OFETs has been explored using poly(vinyl alcohol) (PVA) as the polymer layer.
References
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Ultralow Voltage Pressure Sensors Based on Organic FETs and Compressible Capacitors
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Journal ArticleDOI
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Journal ArticleDOI
Synthesis, Characterization, and Photo-Physical Properties of Dendrimers Modified With 1,8-Naphthalimide Derivatives as Novel Fluorescent pH Sensors
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High quantum efficiency polymer photoconductors using interdigitated electrodes
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