12.0% Efficiency on Large-Area, Encapsulated, Multijunction nc-Si:H-Based Solar Cells

Banerjee, Arindam; Liu, Frank Shengzhong; Beglau, D.; Su, T.; Pietka, G.; Yang, Jeff; Guha, S.

doi:10.1109/jphotov.2011.2181823

Cited by 37 publications

(19 citation statements)

References 5 publications

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“…The ellipsometric data is often represented by the pseudodielectric function, which can reflect the main absorption in the film due to band to band transitions given by [20] 〈ϵ〉…”

Section: Resultsmentioning

confidence: 99%

“…What's more, the nc-Si:H film is more optically clear than amorphous a-Si:H film. Therefore, nc-Si:H p-layer is commonly chosen to be used in silicon-based solar cells [20][21][22][23]. Liao et al prepared hydrogenated protocrystalline, nanocrystalline and microcrystalline silicon p-layers, which were characterized using Raman spectroscopy, high resolution TEM (HRTEM), optical transmittance and activation energy of dark-conductivity.…”

Section: Introductionmentioning

confidence: 99%

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p-Layer bandgap engineering for high efficiency thin film silicon solar cells

Liu

2015

Materials Science in Semiconductor Processing

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“…The ellipsometric data is often represented by the pseudodielectric function, which can reflect the main absorption in the film due to band to band transitions given by [20] 〈ϵ〉…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

p-Layer bandgap engineering for high efficiency thin film silicon solar cells

Liu

2015

Materials Science in Semiconductor Processing

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“…Therefore, improving the current density of the top sub-cell can lead to the higher tandem device’s J sc , which can be achieved by choosing appropriated light-trapping configuration materials, and profiling of the band gap of the i -layer of the top sub-cell. It is well-known that hydrogenated amorphous silicon germanium (a-SiGe:H) and hydrogenated nanocrystalline silicon (nc-Si:H) possess a higher absorption coefficient in the long wavelength region than hydrogenated amorphous silicon (a-Si:H) 12–17 . However, the narrow optical band gaps of an a-SiGe:H and nc-Si:H could cause band gap discontinuity at the p/i and i/n interfaces, leading to a detrimental open-circuit voltage (V oc ) and fill factor (FF) due to the high defect density at these interfaces 18,19 .…”

Section: Introductionmentioning

confidence: 99%

High Efficiency Inorganic/Inorganic Amorphous Silicon/Heterojunction Silicon Tandem Solar Cells

Park

Dao

Kim

et al. 2018

Sci Rep

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We investigated high-efficiency two-terminal tandem photovoltaic (PV) devices consisting of a p/i/n thin film silicon top sub-cell (p/i/n-TFS) and a heterojunction with an intrinsic thin-layer (HIT) bottom sub-cell. We used computer simulations and experimentation. The short-circuit current density (Jsc) of the top sub-cell limits the Jsc of the p/i/n-TFS/HIT tandem PV device. In order to improve the Jsc of the top sub-cell, we used a buffer-layer at the p/i and i/n interface and a graded forward-profile (f-p) band gap hydrogenated amorphous silicon germanium active layer, namely i-layer, in the top sub-cell. These two approaches showed a remarkable raise of the top sub-cell’s Jsc, leading to the increase of the Jsc of the PV tandem device. Furthermore, in order to minimize the optical loss, we employed a double-layer anti-reflective coating (DL-ARC) with a magnesium fluoride/indium tin oxide double layer on the front surface. The reduction in broadband reflection on the front surface (with the DL-ARC) and the enhanced optical absorption in the long wavelength region (with the graded f-p band gap) resulted in the high Jsc, which helped achieve the efficiency up to 16.04% for inorganic-inorganic c-Si-based tandem PV devices.

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“…Anders als fossile Brennstoffe verursacht Sonnenenergie keine Schäden an der Umwelt. B. polykristalline Silizium-Solarzellen (mc-Si-Zellen), [8] einkristalline Silizium-Solarzellen (c-Si-Zellen), [9][10][11] Dünnfilmsolarzellen, [12,13] CdTe-Solarzellen, [14,15] CIGS-Solarzellen, [16,17] GaAs-Solarzellen, [18] CZTS, [19][20][21] farbstoffsensibilisierte Solarzellen (DSSCs), [22] quantenpunktsensibilisierte Solarzellen (QDSSCs), [23] organische Photovoltaik (OPVs) [24] und Perowskit-Solarzellen (PSCs). [6,7] Insbesondere die Photovoltaik, die Sonnenlicht in Elektrizität umwandelt, hat enorme Aufmerksamkeit erfahren, weil sie das Potential hat, den weltweit steigenden Energiebedarf zu decken, ohne Schäden an der Umwelt zu verursachen.…”

Section: Einführungunclassified

Flexible Perowskit‐Solarzellen: Herstellung und Anwendungen

Yang

Priya

et al. 2019

Angewandte Chemie

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Flexible Perowskit‐Solarzellen werden aufgrund ihres vielversprechenden Potentials in der tragbaren Elektronik intensiv erforscht. Verschiedene Niedertemperatur‐Herstellungsmethoden für Perowskitfilme und große Fortschritte bei der gezielten Abstimmung der Schnittstellen und Elektrodenmaterialien haben zu Effizienzen von über 18 % geführt. Dieser Aufsatz diskutiert die jüngsten Entwicklungen bei flexiblen Perowskit‐Solarzellen mit Schwerpunkt auf: 1) Niedertemperatur‐Herstellungsmethoden zur Verbesserung der Eigenschaften von Perowskitfilmen, wie vollständige Bedeckung, einheitliche Morphologie und gute Kristallinität; 2) Schnittstellen/Grenzflächen in flexiblen Perowskit‐Solarzellen, einschließlich Kennzahlen wie Transmissionsgrad, Ladungsträgerbeweglichkeit, Bandlückenabstand; 3) mechanische und Umgebungsstabilität flexibler Perowskit‐Solarzellen; 4) Ausblick auf flexible Perowskit‐Solarzellen in tragbaren Elektronikgeräten und deren Kosten; 5) Perspektiven zur Kommerzialisierung flexibler Perowskit‐Solarzellen.

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12.0% Efficiency on Large-Area, Encapsulated, Multijunction nc-Si:H-Based Solar Cells

Cited by 37 publications

References 5 publications

p-Layer bandgap engineering for high efficiency thin film silicon solar cells

p-Layer bandgap engineering for high efficiency thin film silicon solar cells

High Efficiency Inorganic/Inorganic Amorphous Silicon/Heterojunction Silicon Tandem Solar Cells

Flexible Perowskit‐Solarzellen: Herstellung und Anwendungen

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