Voltage Matching and Optimal Cell Compositions for Microsystem-Enabled Photovoltaic Modules

Lentine, Anthony L.; Nielson, Gregory N.; Okandan, Murat; Cruz-Campa, Jose-Luis; Tauke‐Pedretti, Anna

doi:10.1109/jphotov.2014.2345437

Cited by 23 publications

(25 citation statements)

References 24 publications

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“…All in all, the results show that voltage-matched modules should be the preferred type of area de-coupled modules. This finding is in agreement with the work of Lentine et al [3], [4], who also found that voltagematched tandem devices perform excellent under changing conditions. The reader should bear in mind that the model used in this work does not take non-ideal mechanisms, like the temperature dependence of semiconductor band gaps, into consideration.…”

Section: Discussionsupporting

confidence: 93%

“…For the other five spectra, there is an overlap between the curves for four-terminal devices and voltage matched area de-coupled modules, while the efficiency of current-matched area de-coupled modules is somewhat lower. This shows the superior spectral flexibility of voltage matched devices, in line with the findings of Lentine et al [3], [4]. Note that the peak efficiency of the series-connected stack is moving from chart to chart.…”

Section: Resultssupporting

confidence: 86%

“…In general one would therefore expect some current-or voltage-mismatch to occur in area de-coupled modules when the actual conditions differ from the design conditions. It has, however, been shown that voltage-matched two-terminal devices are able to perform almost as well as four-terminal devices with varying spectrum and cell temperature, with expected differences in the annual yield of 1-2 % [3], [4]. The cited work considered modules with cells of equal sizes that were horizontally seriesconnected in strings.…”

Section: Introductionmentioning

confidence: 99%

“…The present work extends the analysis carried out in Refs. [1], [3] and [4] by examining how different spectra and module temperatures affect the theoretical efficiency of two-terminal area de-coupled modules compared to that of four-terminal devices.…”

Section: Introductionmentioning

confidence: 99%

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Spectral and temperature sensitivity of area de-coupled tandem modules

Strandberg

2015

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)

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Abstract-Area de-coupling is a recently suggested method for current-or voltage-matching two-terminal tandem modules. It has previously been shown that under standard conditions, area de-coupled modules have the same theoretical efficiency as four-terminal tandem cells for any combinations of band gaps. In this work, the spectral and temperature sensitivity of ideal area de-coupled modules is investigated by detailed balance modeling. Voltage-matched area de-coupled modules are found to be considerably less sensitive to changes in the spectrum than current-matched modules. Current-matched modules are, on the other hand, found to be less sensitive to changes in the temperature. Under normal conditions, the difference in temperature sensitivity has a negligible impact on the efficiency compared to the difference in spectral sensitivity, making voltage-matched modules the preferred choice. The difference in efficiency between an area de-coupled voltage-matched module and a four-terminal device is found to be too small to be of any practical consequence even under changing conditions. This finding is in agreement with earlier work by Lentine et al. on microsystem-enabled photovoltaic modules.

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Section: Discussionsupporting

confidence: 93%

Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spectral and temperature sensitivity of area de-coupled tandem modules

Strandberg

2015

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)

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“…While various fabrication methods exist for the production of thin‐film single‐crystalline silicon including epitaxial growth on porous silicon and kerf‐less exfoliation by stress‐induced crack formation, schemes based on anisotropic wet chemical etching are of special interest due to their ability to generate a wide range of silicon thicknesses (e.g., ≈2–50 μm) from bulk wafers, without the need for additional silicon deposition steps. Suitable layouts yield microscale devices (i.e., microcells) in geometries that are compatible with transfer printing, as summarized in Figure .…”

Section: Solar Cellsmentioning

confidence: 99%

Heterogeneously Integrated Optoelectronic Devices Enabled by Micro‐Transfer Printing

Yoon

Lee

Kang

et al. 2015

Advanced Optical Materials

141

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Transfer printing is a materials assembly technique that uses elastomeric stamps for heterogeneous integration of various classes of micro‐ and nanostructured materials into two‐ and three‐dimensionally organized layouts on virtually any type of substrate. Work over the past decade demonstrates that the capabilities of this approach create opportunities for a wide range of device platforms, including component‐ and system‐level embodiments in unusual optoelectronic technologies with characteristics that cannot be replicated easily using conventional manufacturing or growth techniques. This review presents recent progress in functional materials and advanced transfer printing methods, with a focus on active components that emit, absorb, and/or transport light, ranging from solar cells to light‐emitting diodes, lasers, photodetectors, and integrated collections of these in functional systems, where the key ideas provide unique solutions that address limitations in performance and/or functionality associated with traditional technologies. High‐concentration photovoltaic modules based on multijunction, micro‐ and millimeter‐scale solar cells and high‐resolution emissive displays based on microscale inorganic light‐emitting diodes provide examples of some of the most sophisticated systems, geared toward commercialization.

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Perovskite/Silicon Tandem Solar Cells: Marriage of Convenience or True Love Story? – An Overview

Werner

Niesen

Ballif

2017

Adv Materials Inter

372

316

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Perovskite/silicon tandem solar cells have reached efficiencies above 25% in just about three years of development, mostly driven by the rapid progress made in the perovskite solar cell research field. This review aims to give an overview of the achievements made in this timeframe toward the goal of developing high‐efficiency perovskite/silicon tandem cells with sufficiently large area and long lifetime to be commercially interesting. The developments that led to the recent progress in tandem cell efficiency, as well as the factors currently still limiting their performance, including parasitic absorption, reflection losses, and the nonideal perovskite absorber layer bandgap, are discussed. Based on this discussion, guidelines for future developments are given. In addition, crucial aspects to enable the commercialization of perovskite/silicon tandem solar cells are reviewed, such as device stability and upscaling. Finally, economic considerations show how the number of steps and/or the costs associated to these steps for realizing the perovskite cell must be kept to a minimum to keep up with progress in the field of silicon photovoltaics.

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Voltage Matching and Optimal Cell Compositions for Microsystem-Enabled Photovoltaic Modules

Cited by 23 publications

References 24 publications

Spectral and temperature sensitivity of area de-coupled tandem modules

Spectral and temperature sensitivity of area de-coupled tandem modules

Heterogeneously Integrated Optoelectronic Devices Enabled by Micro‐Transfer Printing

Perovskite/Silicon Tandem Solar Cells: Marriage of Convenience or True Love Story? – An Overview

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