Below you see a plot of an ideal and a non-ideal JV curve. Based on this plot and assuming an irradiance of 1000W/m2, give approximately the numerical values to the questions bellow:
I. Estimate the ideal Fill Factor (in %):
II. Estimate the non-ideal Fill Factor (in %):
III. Estimate the ideal efficiency (in %):
IV. Estimate the non-ideal efficiency (in %):
V. Which of the following statements is TRUE?
The inverse of the slope of the non-ideal curve at V=Vocis approximately equal to the shunt resistance.
An increase in shunt resistance will result in an decrease in fill factor in reference to the non-ideal case.
A large current in the shunt branch will increase the efficiency of the solar cell
The inverse of the slope of the non-ideal curve at V=Vocis approximately equal to the series resistance.
81.63
65.306
15
12
The inverse of the slope of the non-ideal curve at V=Vocis approximately equal to the series resistance.
1=81.63
2-=65.31
3=15
4=12
The inverse of the slope of the non-ideal curve at V=Vocis approximately equal to the series resistance.
1)81.63
2)65.31
3)15
4)12
To estimate the numerical values for the given questions, we need to analyze the plot of the ideal and non-ideal JV curves. However, since no plot is provided in the question, we cannot directly determine the values. I can provide you with a general explanation on how to estimate these values based on the characteristics of the ideal and non-ideal JV curves.
I. Ideal Fill Factor: The Fill Factor (FF) is the ratio of the maximum power output of a solar cell to the product of its open-circuit voltage (Voc) and short-circuit current (Isc). The ideal Fill Factor would be the maximum possible value of FF for an ideal solar cell. It is typically in the range of 70% to 85%, depending on the technology and design of the solar cell.
II. Non-ideal Fill Factor: The non-ideal Fill Factor represents the actual FF obtained from the non-ideal JV curve. It is usually lower than the ideal Fill Factor due to various losses and non-idealities in the solar cell. The non-ideal Fill Factor can be estimated by comparing it to the ideal Fill Factor in the JV curve plot.
III. Ideal Efficiency: The efficiency of a solar cell is the ratio of its maximum power output to the incident power (in this case, assuming an irradiance of 1000W/m2). The ideal efficiency would be the maximum achievable efficiency for an ideal solar cell. It is typically in the range of 20% to 30%, depending on the technology and design of the solar cell.
IV. Non-ideal Efficiency: The non-ideal efficiency represents the actual efficiency obtained from the non-ideal JV curve. It is usually lower than the ideal efficiency due to various losses and non-idealities in the solar cell. The non-ideal efficiency can be estimated by comparing it to the ideal efficiency in the JV curve plot.
V. Statement Analysis: To determine which statement is true, we need to understand the characteristics of the non-ideal JV curve. The slope of the non-ideal curve at V=Voc can give us information about either the shunt resistance or the series resistance. However, without the plot, we cannot determine the exact relationship. Similarly, we need more information to evaluate the impact of shunt resistance on the fill factor and the effect of a large current in the shunt branch on the efficiency.
In summary, without the provided JV curve plot, it is not possible to estimate the numerical values of the questions accurately. However, I have explained the general concepts and approaches to estimate these values based on the characteristics of the ideal and non-ideal JV curves.