Journal ArticleDOI
Photo-Response of Low Voltage Flexible TIPS-Pentacene Organic Field-Effect Transistors
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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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Journal ArticleDOI
Organic phototransistor based on pentacene as an efficient red light sensor
TL;DR: In this article, a red light sensor with pentacene phototransistors (PTs) with a thin film transistor (TFT) configuration was investigated as a red-light sensor.
Journal ArticleDOI
Active Devices Based on Organic Semiconductors for Wearable Applications
TL;DR: A panoramic view of recent achievements and future perspectives of wearable electronics toward the concept of fabrics and garments made by functional (in this case, active electronic) yarns is given.
Journal ArticleDOI
Flexible organic field-effect transistors with TIPS-Pentacene crystals exhibiting high electrical stability upon bending
TL;DR: In this article, flexible organic field effect transistors with high electrical stability upon bending are demonstrated on indium tin oxide coated polyethylene terephthalate substrates with TIPS-Pentacene semiconductor crystals formed by drop casting on a hybrid gate dielectric consisting hafnium dioxide grown by atomic layer deposition and spin coated poly(4-vinylphenol).
Journal ArticleDOI
Flexible low-voltage organic phototransistors based on air-stable dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT)
Johannes Milvich,Tarek Zaki,Mahdieh Aghamohammadi,Reinhold Rödel,Ulrike Kraft,Hagen Klauk,Joachim N. Burghartz +6 more
TL;DR: In this paper, high-performance, lowvoltage organic thin-film transistors based on dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) are thoroughly characterized with respect to their optical functionality.