Substantial broadband photoconductive gain has been realized for organic, thin-film photodetectors with a poly(3-hexylthiophene):phenyl-C61-butyric-acid-methyl-ester (P3HT:PCBM) active layer at low bias voltages. External quantum efficiencies upwards of 1500% were achieved when semicontinuous gold was introduced the anode interface. Significant also observed in sub-band gap, near infrared region where external efficiency approached 100% despite lack sensitizer. The response highly dependent...

The need for extreme-duration light-weight power sources space applications motivates the study and development of polymer-based betavoltaics. betavoltaic device, based on semiconductive polymer-fullerene blend poly(3-hexylthiophene): indene-C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">60</sub> bisadduct (P3HT:ICBA), is demonstrated here first time. Both direct indirect energy conversion methods were explored. For method, a phosphor...

In this paper we present a theoretical model for simulating the behavior of polymer solar cell with poly(3-hexylthiophene):1-(3-methoxycarbonyl) propyl-1-phenyl-[6, 6]-methanofullerene (P3HT:PCBM) active layer. Two different types boundary conditions were considered, Dirichlet’s and mixed. For have achieved an excellent agreement experiment. The influence on appearance s-shaped current-voltage characteristic (sometimes observed in experiments) has been investigated. When mixed are applied,...

Temperature dependence of polymer solar cell with a poly (3-hexylthiophene) : indene-C60 bisadduct (P3HT:ICBA) active layer were investigated from 15°C to 50°C evaluate their application in standard working conditions. A drift-diffusion model including the temperature dependent hole mobility was used as starting point simulate measured I-V curves. induced parameters changes indicate that there is significant optical interference influence device. In order include these effects into...

P3HT:PCBM based photovoltaic devices with different active layer thicknesses (ALTs) were examined in photodetector and solar cell operation modes. The photocurrent spectra current density-voltage characteristics measured. All experimental results reproduced by the unique drift-diffusion model which excludes optical interference allows parameters of photogeneration, transport, recombination to be ALT dependent. characterization indicated a thickness dependence too. A conclusion was drawn that...

We report the application of perylenetetracarboxylic diimide (PTCDI) nanowires for sensing ethyl acetate. The conductivity crystalline nano/microwires increases quickly and selectively in presence acetate vapor, but not with water, acid alcohol vapors, suggesting that PTCDI may be used monitoring during a wine manufacturing process.

The ongoing advanced space exploration requires the novel energy sources that can generate power for extreme duration without need of refill. long betavoltaic devices are presented using conjugated polymer with scintillators. Monte Carlo simulations used to study interaction electron beam two different scintillators, Cerium doped Yttrium Aluminum Garnet (Ce:YAG) and Thallium Cesium Iodide (CsI:Tl). catholuminescence profiles from simulation showed CsI:Tl is more-efficient photons when hit by...

In this article, the impact of surface recombination on J-V characteristics organic solar cells (OSC) was analyzed. The investigation carried out using drift-diffusion model in which holes and electrons both electrodes, anode cathode, were taken into account through boundary conditions. order to perceive individual influence recombination, equilibrium thermionic concentrations for contact interfaces neglected. As reference point our analysis, measured <sub...

A comprehensive photocurrent spectra analysis of the ITO/PEDOT:PSS/MEH-PPV/Al devices with three different poly-(2-metoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene-vinylene) or MEH-PPV thin-film thicknesses is used to investigate charge carrier photogeneration in this polymer. The calculated based on hole polaron drift-diffusion model including Poole-Frenkel (P-F) transport. Two mechanisms (monomolecular and Langevin-type bimolecular) for recombination are considered separately. absorption...

Detection of a newly discovered prostate cancer (PC) biomarker neuroendocrine marker (NEM) using an optofluidic chip, consisting arrayed optical nanosensors, has been carried out. Different from prostate-specific antigen (PSA), NEM is produced by tumor cells and released or leaked in blood. Hence, tumorspecific more reliable than PSA. In this effort, for the first time, we have detected 10pg/mL BSA solution blood serum patient chip with high specificity, indicating type can be potentially...

The dc photocurrent spectra of the indium tin oxide/poly(3,4-ethylene- dioxythiophene):poly(styrenesulfonate)/poly (2-methoxy-5-(2´-ethylhexyloxy)-1,4-phenylene- vinylene)Al (ITO/PEDOT:PSS/MEH-PPV/Al) device are measured for three different MEH-PPV thin-film thicknesses in a wide range bias voltages and several incident light intensities. operation is modeled based on singlet exciton diffusion hole polaron drift diffusion. Poole-Frenkel transport bimolecular Langevine recombination polarons...

Microfabrication technology has been successful in producing a wide range of miniature sensors and mechanical devices. Of particular interest is the application this to biological systems. For instance an immunobiosensor for bacterial food toxin with sensitivity 1 ng/mL reaction chambers have fabricated DNA analysis sequencing by hybridization. The integration other components, particularly fluidic devices, offers promise microsystems. A positive displacement micropump flow rate 0.1-10 /spl...

The steady state drift-diffusion model (DDM) of organic solar cells that considers the surface recombination processes for majority and minority carriers, as well their thermionic emission on both electrodes, is presented in this paper. When full Robin boundary conditions (BCs) popular finite difference method with Schaffeter-Gummel discretization (FDSG) were applied, significant instabilities observed when velocities (SRVs) carriers one or electrodes reduced. To analyze problem perceive...

There is an important need for improvement in both cost and efficiency of photovoltaic cells. For improved a better understanding solar cell performance required. In this paper we propose analytical kinetic model thin-film silicon cell, which can provide intuitive the effect illumination on its charge carriers electric current. The separate cases homogeneous inhomogeneous carrier generation rates across device are investigated. Our also provides study transport within quasi-neutral depletion...

Memory resistors, or memristors, have a wide range of applications in numerous fields, especially the fields cryptography and neuromorphic computing. However, multiple issues challenges face use memristors day-to-day operations, such as fabrication these components using scalable practices. Current methods do not lend themselves to large-scale integration with current complementary metal oxide semiconductor (CMOS) techniques. In this paper, memristor is constructed by spin-coating cobalt...

The existence of a hole transport layer (HTL) and an electron (ETL) in organic solar cells (OSCs) was considered the drift-diffusion model (DDM) simplified way: domain for solving DDM equations divided into three subdomains corresponding to HTL, active (AL) ETL. Different material parameters such as mobility, dielectric permittivity, recombination rate, absorption coefficient, characterizing each layer, were applied subdomain. Dirichlet boundary conditions used on electrode/transport (TL)...