The Physics of Industrial Crystalline Silicon Solar Cells

Breitenstein, O.

doi:10.1016/b978-0-12-381343-5.00001-x

Cited by 4 publications

(3 citation statements)

References 73 publications

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“…We consider a typical two‐diode model for each junction , with its corresponding shunt and series resistances. The implicit current density versus voltage J – V curves for each junction

i = 1, 2, 3

can be written in the forward bias direction:

\begin{matrix} J_{i} false(V false) = & - J_{i_{ph}} + J_{i_{01}} (exp (\frac{e ()(, V - R_{i_{s}} A J_{i} (V))}{k T}) - 1) \\ + J_{i_{_{02}}} (exp (\frac{e ()(, V - R_{i_{s}} A J_{i} (V))}{n_{i} k T}) - 1) \\ + \frac{V - R_{i_{s}} A J_{i} false(V false)}{R_{i_{sh}} A}, \end{matrix}

and in reverse bias direction:

\begin{matrix} J_{i} false(V false) = & ((, - J_{i_{normalph}} + J_{i_{01}} ()(, exp ()(, \frac{e (V - R_{i_{s}} A J_{i} false(V false))}{k T}) - 1)) \\ (+ J_{i_{_{02}}} ()(, exp ()(, \frac{e (V - R_{i_{s}} A J_{i} false(V false))}{n_{i} k T}))) \end{matrix}

…”

Section: The Modeling Frameworkmentioning

confidence: 78%

“…As expected, the shunt and breakdown voltage values for the GaInP and the Ge junctions are lower than what has typically been reported for solar cells The photocurrent density values

J_{ph}

correspond to cases where the junctions are illuminated by their respective LEDs, that is,

J_{ph}

would be zero for an LED off‐state for a particular junction. The Miller indices are set to 3, as suggested elsewhere .…”

Section: Discussion and Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Spectral response measurements of multijunction solar cells with low shunt resistance and breakdown voltages

Babaro

West

Hamadani

2016

Energy Science & Engineering

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Spectral response measurements of germanium-based triple-junction solar cells were performed under a variety of light and voltage bias conditions. Two of the three junctions exhibited voltage and light bias dependent artifacts in their measured responses, complicating the true spectral response of these junctions. To obtain more insight into the observed phenomena, a set of current-voltage measurement combinations were also performed on the solar cells under identical illumination conditions, and the data were used in the context of a diode-based analytical model to calculate and predict the spectral response behavior of each junction as a function of voltage. The analysis revealed that both low shunt resistance and low breakdown voltages in two of the three junctions influenced the measured quantum efficiency of all three junctions. The data and the modeling suggest that combination of current-voltage measurements under various light bias sources can reveal important information about the spectral response behavior in multijunction solar cells.

show abstract

“…We consider a typical two‐diode model for each junction , with its corresponding shunt and series resistances. The implicit current density versus voltage J – V curves for each junction

i = 1, 2, 3

can be written in the forward bias direction:

\begin{matrix} J_{i} false(V false) = & - J_{i_{ph}} + J_{i_{01}} (exp (\frac{e ()(, V - R_{i_{s}} A J_{i} (V))}{k T}) - 1) \\ + J_{i_{_{02}}} (exp (\frac{e ()(, V - R_{i_{s}} A J_{i} (V))}{n_{i} k T}) - 1) \\ + \frac{V - R_{i_{s}} A J_{i} false(V false)}{R_{i_{sh}} A}, \end{matrix}

and in reverse bias direction:

\begin{matrix} J_{i} false(V false) = & ((, - J_{i_{normalph}} + J_{i_{01}} ()(, exp ()(, \frac{e (V - R_{i_{s}} A J_{i} false(V false))}{k T}) - 1)) \\ (+ J_{i_{_{02}}} ()(, exp ()(, \frac{e (V - R_{i_{s}} A J_{i} false(V false))}{n_{i} k T}))) \end{matrix}

…”

Section: The Modeling Frameworkmentioning

confidence: 78%

“…As expected, the shunt and breakdown voltage values for the GaInP and the Ge junctions are lower than what has typically been reported for solar cells The photocurrent density values

J_{ph}

correspond to cases where the junctions are illuminated by their respective LEDs, that is,

J_{ph}

would be zero for an LED off‐state for a particular junction. The Miller indices are set to 3, as suggested elsewhere .…”

Section: Discussion and Resultsmentioning

confidence: 99%

Spectral response measurements of multijunction solar cells with low shunt resistance and breakdown voltages

Babaro

West

Hamadani

2016

Energy Science & Engineering

View full text Add to dashboard Cite

show abstract

“…Therefore, in the following evaluations we have set all values above 1 to In the next step nlum and Ci are determined simultaneously by a fit of the luminescence data between 0.1 and 1 sun intensity. With the known values of Vd,i (1) and X each nominator of the exponential terms in (15), which is the local diode voltage Vd, can be calculated with Y and Z obtained after (14). Applying a linear fit to the logarithmic luminescence signal Φoc of all four net Voc-PL images over their corresponding local diode voltage Vd leads to a linear function with the slope 1/(nlumVT) and the offset ln(Ci'), see also (8) determined nlum without and including image deconvolution after [ 9 ] applied to the luminescence images, respectively.…”

Section: Evaluation Methods Of the Pl Resultsmentioning

confidence: 99%