Effect of light intensity on current collection in thin-film solar cells

McMahon, T. J.; Roedern, B. von

doi:10.1109/pvsc.1997.654106

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…3a . In here, a double diode model is used that allows a more realistic account for the carrier recombination in the absorber layer, which strongly influences device characteristics under low illumination intensity [ 20 ], particularly prevalent in the case of thin film materials [ 21 ]. The effect of variable illumination in each segment is accounted by varying the current source, I L for each of the segments.…”

Section: Resultsmentioning

confidence: 99%

Orthogonal Thin Film Photovoltaics on Vertical Nanostructures

Ahnood¹,

Zhou²,

Suzuki³

et al. 2015

Nanoscale Res Lett

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Decoupling paths of carrier collection and illumination within photovoltaic devices is one promising approach for improving their efficiency by simultaneously increasing light absorption and carrier collection efficiency. Orthogonal photovoltaic devices are core-shell type structures consisting of thin film photovoltaic stack on vertical nanopillar scaffolds. These types of devices allow charge collection to take place in the radial direction, perpendicular to the path of light in the vertical direction. This approach addresses the inherently high recombination rate of disordered thin films, by allowing semiconductor films with minimal thicknesses to be used in photovoltaic devices, without performance degradation associated with incomplete light absorption. This work considers effects which influence the performance of orthogonal photovoltaic devices. Illumination non-uniformity as light travels across the depth of the pillars, electric field enhancement due to the nanoscale size and shape of the pillars, and series resistance due to the additional surface structure created through the use of pillars are considered. All of these effects influence the operation of orthogonal solar cells and should be considered in the design of vertically nanostructured orthogonal photovoltaics.

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Section: Resultsmentioning

confidence: 99%

Orthogonal Thin Film Photovoltaics on Vertical Nanostructures

Ahnood¹,

Zhou²,

Suzuki³

et al. 2015

Nanoscale Res Lett

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“…Obviously, the FF for Al and ZnO/Ag back contacts is higher than that of Cr back contact. The small value of FF may be due to the high excitation intensity used [13]. According to a model proposed by Crandal [14], for the weakly absorbed light, the shape of J-V curve is completely specified by electron and hole drift lengths.…”

Section: Resultsmentioning

confidence: 99%

A comparative study of photoconductivity and carrier transport in a-Si:H p–i–n solar cells with different back contacts

Kaplan

Hegedus

2010

Solid-State Electronics

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“…One application has been the determination of local internal resistance. 184,185 Other work, more extensive than in the example shown in Figure 24, has studied the local effects of CdTe post-deposition treatments. 170,180 Another application is the tracking of changes in CdTe cells, especially the emergence of small dead areas, after they have been exposed to elevated temperatures for extended periods of time.…”

Section: Small-spot Light-beam-induced Current (Lbic)mentioning

confidence: 99%

Physical characterization of thin‐film solar cells

Durose¹,

Asher²,

Jaegermann³

et al. 2004

Progress in Photovoltaics

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The principal techniques used in the physical characterization of thin-film solar cells and materials are reviewed, these being scanning probe microscopy (SPM), X-ray diffraction (XRD), spectroscopic ellipsometry, transmission electron microscopy (TEM), Auger electron spectroscopy (AES), secondary-ion mass spectrometry (SIMS), X-ray photoelectron spectroscopy (XPS), photoluminescence and timeresolved photoluminescence (TRPL), electron-beam-induced current (EBIC) and light-beam-induced current (LBIC). For each method the particular applicability to thin-film solar cells is highlighted. Examples of the use of each are given, these being drawn from the chalcopyrite, CdTe, Si and III-V materials systems.

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Effect of light intensity on current collection in thin-film solar cells

Cited by 4 publications

References 5 publications

Orthogonal Thin Film Photovoltaics on Vertical Nanostructures

Orthogonal Thin Film Photovoltaics on Vertical Nanostructures

A comparative study of photoconductivity and carrier transport in a-Si:H p–i–n solar cells with different back contacts

Physical characterization of thin‐film solar cells

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