Extracting and Studying Solar Cell Five Parameters Based on Lambert W Function
A simple method, which is based on Lambert W function and two assumptions (namely, solar cell photocurrent is much larger than the reverse saturation current, and the shunt resistance is much larger than the series resistance), is proposed to extract five parameters of the cell (photocurrent
I
ph, ideality factor n, reverse saturation current I
0, series Rs
and shunt R
sh resistance) from a single current–voltage curve. When this method is used to analyze existing literature data, the results show
that it not only extracts all parameters accurately but also fits for different kinds of solar cells. The well fittings between the measured and calculated data prove the above findings. Then, the effects of radiation intensity P
in and angle of the incident
light on five parameters have been investigated in detail. From the extracted results, it can be seen that I
ph and
R
s increase with P
in, while n, I
0 and R
sh decrease continuously with
P
in for a radiation intensity range 0.3≤P
in≤1.31 W/m2. And, it is observed that I
ph and Rs
monotonically decrease with , but n, I
0 and R
sh increase
with for a light incident angle range 0≤≤40°. After a theoretical discussion, the conclusion can be drawn that the effective light intensities received by a cell play a critical role in modeling behaviors of five parameters. In addition, it is
found that n is least sensitive to the radiation intensity and light incident angle.
Keywords: ANGLE OF INCIDENT LIGHT; EXTRACTION METHOD; FIVE PARAMETERS; RADIATION INTENSITY; SOLAR CELL
Document Type: Research Article
Publication date: 01 February 2017
- Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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