scholarly journals Behaviour of PV cell with variation in parameters

2018 ◽  
Vol 3 (1) ◽  
pp. 11-13
Author(s):  
P. V. Ram Kumar ◽  
◽  
Aman Khurana ◽  
R. S. Mishra
Keyword(s):  
Open Circuit Voltage ◽  
Series Resistance ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Temperature Series ◽  
Saturation Current ◽  
Electrical Behavior ◽  
Uniform Illumination ◽  
Shunt Resistance

First electrical behavior i.e. short circuit current and open-circuit voltage is observed. The effect of different parameters on the I-V and P-V curve is studied considering uniform illumination. These parameters are insolation level, temperature, series resistance, shunt resistance, diode reverse saturation current. A variation on I-V and P-V curves are different with each parameter. With some parameters, the effect is significant while for others the effect is not so significant. For the parameters whose effect is not so significant large variation of inputs is taken for showing the effect. Simulation work is done in MATLAB

Study on the Output Characteristics of Organic Photovoltaic Cells

2011 ◽  
Vol 347-353 ◽  
pp. 1314-1317
Author(s):  
Zhi You Zhong ◽  
C.Y. Yang ◽  
J.H. Gu
Keyword(s):  
Quality Factor ◽  
Open Circuit Voltage ◽  
Series Resistance ◽  
Short Circuit ◽  
Equivalent Circuit Model ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Shunt Resistance ◽  
Output Characteristics

Based on the analysis of the equivalent circuit model of organic photovoltaic (OPV) cells, the explicit expression of current, short-circuit current and open-circuit voltage was obtained by means of W-function, and the effects of internal resistances and diode quality factor on the output characteristics of OPV cells were studied. The results demonstrate that the series resistance can effect short-circuit current but not open-circuit voltage, and the shunt resistance and diode quality factor can influence open-circuit voltage but short-circuit current unchanged. The decrease in series resistance and the increase in shunt resistance and diode quality factor can enhance the fill factor and energy conversion efficiency of OPV cells. This conclusion is essential in preparing OPV cells and improving device performance.

Luminal Na concentration and the electrical properties of the snake distal tubule

1980 ◽  
Vol 239 (5) ◽  
pp. F412-F419 ◽  
Author(s):  
K. W. Beyenbach ◽  
B. M. Koeppen ◽  
W. H. Dantzler ◽  
S. I. Helman
Keyword(s):  
Electrical Properties ◽  
Driving Force ◽  
Open Circuit Voltage ◽  
Series Resistance ◽  
Short Circuit ◽  
Distal Tubule ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Shunt Resistance ◽  
Distal Tubules

In previous studies of isolated perfused distal tubules of Thamnophis spp., elevation of luminal [Na] from 16 to 150 mM resulted in a transient hyperpolarization of the open-circuit voltage, VToc. To characterize further this response, studies were done to examine the concurrent changes of the transepithelial resistance, RT. After elevation of luminal [Na] from 16 to 150 mM. the VToc increased sharply from a mean of 38.5 to 61.2 mV and the RT decreased from a mean of 22.3 to 15.8 k omega x cm. Thereafter, the VToc declined slowly below control values, and the RT increased well above control values. The short-circuit current calculated as VToc/RT changed in parallel with the VToc, increasing at first (from 1.8 to 4.1 microA/cm) and then falling to about 0.2 microA/cm. Luminal addition of 10(-5) M amiloride caused th VToc leads to 0 and the RT to increase during control and all phases of the transient. On the assumption that RT during amiloride perfusion is the same as the shunt resistance, Rs, the values of the transepithelial driving force, ENa, and its series resistance, RNa, were calculated. An analysis of the data in this way indicated that the principal changes in the epithelium could be attributed to alterations of the RNa and not the ENa or Rs.

scholarly journals Effects of Hole-Collecting Buffer Layers and Electrodes on the Performance of Flexible Plastic Organic Photovoltaics

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Sungho Woo ◽  
Hong-Kun Lyu ◽  
Yoon Soo Han ◽  
Youngkyoo Kim
Keyword(s):  
Indium Tin Oxide ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Series Resistance ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Buffer Layers ◽  
Large Area

Here we report the influences of the sheet resistance (Rsheet) of a hole-collecting electrode (indium tin oxide, ITO) and the conductivity of a hole-collecting buffer layer (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS) on the device performance of flexible plastic organic photovoltaic (OPV) devices. The series resistance (RS) of OPV devices steeply increases with increasingRsheetof the ITO electrode, which leads to a significant decrease of short-circuit current density (JSC) and fill factor (FF) and power conversion efficiency, while the open-circuit voltage (VOC) was almost constant. By applying high-conductivity PEDOT:PSS, the efficiency of OPV devices with highRsheetvalues of 160 Ω/□ and 510 Ω/□ is greatly improved, by a factor of 3.5 and 6.5, respectively. These results indicate that the conductivities of ITO and PEDOT:PSS will become more important to consider for manufacturing large-area flexible plastic OPV modules.

Specifies of tandem organic solar cells using optical spacers with recombination model

2015 ◽  
Vol 12 (1) ◽  
pp. 77-82 ◽  
Author(s):  
M.R. Merad Boudia ◽  
A Cheknane ◽  
B Benyoucef
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Ideality Factor ◽  
Fill Factor ◽  
Series Resistance ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Shunt Resistance ◽  
Lumped Circuit Model

A numerical simulation study of a Tandem solar cell is presented. The parameters of single and two-diodes lumped-circuit model are usually the saturation current, the series resistance, the ideality factor, the shunt resistance and the photocurrent. It is found that the influence of the distributed series resistance on electrical characteristics can be described numerically by the application of the two models to Tandem organic solar cells. A description of the efficiency, fill factor, open circuit voltage and short circuit current on the devices are marked with series resistance, temperature and ideality factor. This approach allows one to obtain a set of parameters which is reasonable and representative of the physical system.

scholarly journals RESISTANCE, TEMPERATURE AND IRRADIANCE PARAMETER ANALYSIS OF A SINGLE DIODE PHOTOVOLTAIC CELL MODEL

2019 ◽  
pp. 97-107
Keyword(s):  
Output Power ◽  
Series Resistance ◽  
Cell Model ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Photovoltaic Cell ◽  
Open Circuit ◽  
Parameter Analysis ◽  
Shunt Resistance ◽  
Parameter Variations

This paper presents an analysis of parameter variations of a single-diode solar cell model. The parameters analyzed are the series resistance, shunt resistance, temperature and radiation change. Model equations are derived and simulated. All simulations were performed in MatLab using looping iterative method. Results obtained show that an increase in series resistance causes a decrease in short-circuit current and output power. A decrease in shunt resistance also causes a decrease in short circuit current and output power. An increase in temperature above the nominal value of 25oC causes a significant decrease in the open circuit voltage. An increase in irradiance above a nominal value of 1000 W/m2 causes the short circuit current to increase from 8.21A at 1000 W/m2 to 10.67A at 1300W/m2. It can be seen that parameter variations have a net effect on the current-voltage (I-V) and power-voltage (P – V) characteristics.

Online current-sensorless estimator for PV open circuit voltage and short circuit current

Solar Energy ◽  
2021 ◽  
Vol 213 ◽  
pp. 198-210
Author(s):  
Ahsan Nadeem ◽  
Hadeed Ahmed Sher ◽  
Ali Faisal Murtaza ◽  
Nisar Ahmed
Keyword(s):  
Open Circuit Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Current Sensorless

IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS

2017 ◽  
Vol 80 (1) ◽  
Author(s):  
Zainal Arifin ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Suyitno Suyitno ◽  
Argatya Tara Setyaji
Keyword(s):  
Current Density ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Natural dyes have attracted much researcher’s attention due to their low-cost production, simple synthesis processes and high natural abundance. However the dye-sensitized solar cells (DSSCs) based natural dyes have higher tendency to degradation. This article reports on the enhancement of performance and stability of dye-sensitized solar cells (DSSCs) using natural dyes. The natural dyes were extracted from papaya leaves by ethanol solvent at a temperature of 50 °C. Then the extracted dyes were isolated and modified into Mg-chlorophyll using column chromatography. Mg-chlorophyll was then synthesized into Fe-chlorophyll to improve stability. The natural dyes were characterized using ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and cyclic voltammetry. The performance of DSSCs was tested using a solar simulator. The results showed the open-circuit voltage, the short-circuit current density, and the efficiency of the extracted papaya leaves-based DSSCs to be 325 mV, 0.36 mA/cm2, and 0.07%, respectively. Furthermore, the DSSCs with purified chlorophyll provide high open-circuit voltage of 425 mV and short-circuit current density of 0.45 mA/cm2. The use of Fe-chlorophyll for sensitizing the DSSCs increases the efficiency up to 2.5 times and the stability up to two times. The DSSCs with Fe-chlorophyll dyes provide open-circuit voltage, short-circuit current density, and efficiency of 500 mV, 0.62 mA/cm2, and 0.16%, respectively. Further studies to improve the current density and stability of natural dye-based DSSCs along with an improvement in the anchor between dyes and semiconducting layers are required.

scholarly journals Direct AFM-based nanoscale mapping and tomography of open-circuit voltages for photovoltaics

2018 ◽  
Vol 9 ◽  
pp. 1802-1808 ◽  
Author(s):  
Katherine Atamanuk ◽  
Justin Luria ◽  
Bryan D Huey
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Three Dimensional ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Photovoltaic Properties ◽  
Order Of Magnitude ◽  
Individual Grains

The nanoscale optoelectronic properties of materials can be especially important for polycrystalline photovoltaics including many sensor and solar cell designs. For thin film solar cells such as CdTe, the open-circuit voltage and short-circuit current are especially critical performance indicators, often varying between and even within individual grains. A new method for directly mapping the open-circuit voltage leverages photo-conducting AFM, along with an additional proportional-integral-derivative feedback loop configured to maintain open-circuit conditions while scanning. Alternating with short-circuit current mapping efficiently provides complementary insight into the highly microstructurally sensitive local and ensemble photovoltaic performance. Furthermore, direct open-circuit voltage mapping is compatible with tomographic AFM, which additionally leverages gradual nanoscale milling by the AFM probe essentially for serial sectioning. The two-dimensional and three-dimensional results for CdTe solar cells during in situ illumination reveal local to mesoscale contributions to PV performance based on the order of magnitude variations in photovoltaic properties with distinct grains, at grain boundaries, and for sub-granular planar defects.

scholarly journals Prediction of Solar Irradiance Based on Artificial Neural Networks

Inventions ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 45 ◽  
Author(s):  
Waleed I. Hameed ◽  
Baha A. Sawadi ◽  
Safa J. Al-Kamil ◽  
Mohammed S. Al-Radhi ◽  
Yasir I. A. Al-Yasir ◽  
...  
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Solar Irradiance ◽  
Open Circuit Voltage ◽  
Low Cost ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Pv Module ◽  
Artificial Neural

Prediction of solar irradiance plays an essential role in many energy systems. The objective of this paper is to present a low-cost solar irradiance meter based on artificial neural networks (ANN). A photovoltaic (PV) mathematical model of 50 watts and 36 cells was used to extract the short-circuit current and the open-circuit voltage of the PV module. The obtained data was used to train the ANN to predict solar irradiance for horizontal surfaces. The strategy was to measure the open-circuit voltage and the short-circuit current of the PV module and then feed it to the ANN as inputs to get the irradiance. The experimental and simulation results showed that the proposed method could be utilized to achieve the value of solar irradiance with acceptable approximation. As a result, this method presents a low-cost instrument that can be used instead of an expensive pyranometer.

Inkjet Printing Technology for Dye-Sensitized Solar Cells

2012 ◽  
Vol 476-478 ◽  
pp. 1767-1770
Author(s):  
Yu Li Lin ◽  
Cheng Yi Hsu ◽  
Chang Lun Tai
Keyword(s):  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Tio2 Particles ◽  
Ito Glass ◽  
Sensitized Solar Cells ◽  
Pet Substrate

The task of this study is to prepare the TiO2 film electrode for dye-sensitized solar cells (DSSC) on ITO PET substrate using a general jet-printer. The results were compared with that obtained using ITO glass substrate. In this study, the dispersion of TiO2 slurry was manipulated by changing the pH value of the solution to avoid agglomeration of TiO2 particles. The average TiO2 particles used in this study were measured about 130nm. The experimental results show that it has the best performance when the thickness of the TiO2 film was about 10μm. In ITO glass substrate, the measured short circuit current was about 5.03mA, the open circuit voltage was measured to be 0.65V. In ITO-PET substrate, the measured short circuit current was about 2.73mA, the open circuit voltage was measured to be 0.68V.

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