Solar-cell design based on a distributed diode analysis

Boone, Jack L.; Doren, T.P. Van

doi:10.1109/t-ed.1978.19168

Cited by 19 publications

(11 citation statements)

References 2 publications

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“…Later, Handy [3] attempted to include the complicated two-dimensional sheet resistance problem in a complete model of solar cell series resistance, but apparently failed to interpret properly his results in terms of an equivalent series resistance. More recently, Boone and Van Doren [4] have studied a distributed model with exponential type diode characteristics, however, again under the erroneous assumption of uniform current generation.…”

Section: Lars Drud Nielsenmentioning

confidence: 99%

“…Since the capacitance is directly proportional to the area and inversely proportional to the depletion width, conventional capacitances with a given area decrease with increasing voltage. There are, however, specific needs where more functional flexibility is required such as in a high-frequency switching application when a three-terminal structure is suitable [4].…”

Section: I Introduction Oltage 'Variable C a P A C I T O R S Or Vamentioning

confidence: 99%

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Distributed series resistance effects in solar cells

Nielsen

1982

IEEE Trans. Electron Devices

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Section: Lars Drud Nielsenmentioning

confidence: 99%

Section: I Introduction Oltage 'Variable C a P A C I T O R S Or Vamentioning

confidence: 99%

Distributed series resistance effects in solar cells

Nielsen

1982

IEEE Trans. Electron Devices

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“…This effect violates the superposition principle, which assumes no change in J Inj (both magnitude and direction) under illumination condition versus the dark condition [1]. The point contact at the front also introduces a lateral current flow that adds an additional series resistance under illumination [29]- [31].…”

Section: High-level Injectionmentioning

confidence: 97%

The Frozen Potential Approach to Separate the Photocurrent and Diode Injection Current in Solar Cells

Chavali

Moore

Wang

et al. 2015

IEEE J. Photovoltaics

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The principle of superposition is commonly utilized in the analysis of current transport under dark and light conditions for several different types of solar cells. However, this principle assumes that the photocurrent is voltage independent and that the diode injection current is generation independent, which restricts its validity. Indeed, the superposition principle cannot be applied to most thin-film solar cells because the above mentioned assumptions are not generally valid. In order to address this issue, a novel numerical modeling approach is described that allows independent computation of the photocurrent and of the diode injection current as components of the total current under illumination. Then, using several test cases, where the principle of superposition breaks down, the usefulness of this modeling approach is demonstrated.

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“…However, they cannot explain the straightforwardness of our experimental results, because their analytical expressions are much too complicated, or they miss the sole dependence on the dark diode forward current, or their results are given just numerically. In contrast, there are two theoretical works that explicitly state the conditions under which an equivalent lumped description of the distributed series resistance is possible, but only for a 1D geometry which, as we discuss in Section , misses essential features of actual solar cells. In addition, although they help to understand the validity of the equivalent circuit in general, also the latter works lack the variation of

R_{normals}

along the current–voltage characteristic, as a constant resistance value is obtained there.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Aspects Concerning the Validity of the Standard Equivalent Circuit for Large‐Area Silicon Solar Cells

Wagner

Carstensen

Adelung

2019

Physica Status Solidi (a)

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The standard equivalent circuit of a solar cell amounts to a lumped description by separate diode and resistor elements. As its application to a large-area silicon solar cell effectively implies averaging the emitter resistance which, however, is closely coupled to the p-n junction, it is not self-evident that it works more or less well. Using an analytically solvable distributed series resistance model and systematically treating the deviations from the ideal case of zero emitter resistance, the equivalent circuit is found in linear order in the sheet resistivity. In this linear order, the lumped voltage losses are fully compatible with the integrated Joule losses; this compatibility turns out to be a necessary and sufficient condition for modeling the local series resistance of a large-area silicon solar cell. In higher orders of the sheet resistivity, however, the lumped voltage losses are not compatible with the integrated Joule losses, which means that the equivalent circuit cannot describe these higher orders. The equivalent circuit resulting from the linear-order lumped series resistance accounts for the experimentally observed variation of the lumped series resistance along the current-voltage characteristic, which turns out to be fully described by a dependence on the dark diode current only.

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Solar-cell design based on a distributed diode analysis

Cited by 19 publications

References 2 publications

Distributed series resistance effects in solar cells

Distributed series resistance effects in solar cells

The Frozen Potential Approach to Separate the Photocurrent and Diode Injection Current in Solar Cells

Fundamental Aspects Concerning the Validity of the Standard Equivalent Circuit for Large‐Area Silicon Solar Cells

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