PEDOT:PSS emitters on multicrystalline silicon thin-film absorbers for hybrid solar cells

Junghanns, Marcus; Plentz, Jonathan; Andrä, G.; Gawlik, Annett; Höger, I.; Falk, F.

doi:10.1063/1.4913869

Cited by 27 publications

(23 citation statements)

References 20 publications

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“…Consequently, considering this effect, J sc can be calculated using the active area instead of aperture area, which results in 19.07 mA cm −2 without PDMS foils and 20.16 mA cm −2 with it. These values agree with previous thin‐film solar cells fabricated by our research group and lead to an active‐area efficiency of 5.6%. It must be mentioned that these values are reached without texturing the silicon surface to enhance the light trapping, introducing remarkable optical losses at longer wavelengths …”

Section: Resultssupporting

confidence: 91%

Multicrystalline Silicon Thin‐Film Solar Cells Based on Vanadium Oxide Heterojunction and Laser‐Doped Contacts

Martı́n

López

Plentz

et al. 2019

Physica Status Solidi (a)

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Liquid phase crystallized (LPC) silicon thin films on glass substrates are a feasible alternative to conventional crystalline silicon (c‐Si) wafers for solar cells. Due to substrate limitation, a low‐temperature technology is needed for solar cell fabrication. While silicon heterojunction is typically used, herein, the combination of vanadium oxide/c‐Si heterojunction as emitter and base contacts defined by IR laser processing of phosphorus‐doped amorphous silicon carbide stacks is explored. LPC solar cells are fabricated using such technologies to identify their issues and advantages with a promising performance of an active‐area efficiency of 5.6%. Apart from the absence of light‐trapping techniques, the relatively low efficiency obtained is attributed to a low lifetime in the LPC silicon bulk. These poor material properties imply a short diffusion length that makes it that only photogenerated carriers in the emitter regions can be collected. Consequently, future devices should show narrower base contact regions, suggesting a shorter‐wavelength laser, combined with longer LPC substrate lifetimes.

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Section: Resultssupporting

confidence: 91%

Multicrystalline Silicon Thin‐Film Solar Cells Based on Vanadium Oxide Heterojunction and Laser‐Doped Contacts

Martı́n

López

Plentz

et al. 2019

Physica Status Solidi (a)

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“…We also assume a quantum efficiency of 100% such that all absorbed photons will result in the generation and collection of carriers. PEDOT:PSS on the mc-Si thin film [142]. Note that the Jsc reported of 25.4 mA/cm 2 is slightly better than the 23.3 mA/cm 2 observed in our simulated results for Si film of the same thickness of m.…”

Section: Results and Discussion Of Effects Of Si Thickness On Light Acontrasting

confidence: 56%

Hybrid solar cells based on Si and PEDOT : PSS

Wang¹

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“…Additionally, in the HSCs, it is possible to have holes in the organic layer . To simulate this influence, also the standard a‐Si:H solar cell with the p + –i–n + doping profile was deposited without n + ‐layer (gray IV curve in Figure ).…”

Section: Resultsmentioning

confidence: 55%

Controlling Intermolecular Interactions at Interfaces: Case of Supramolecular Tuning of Fullerene's Electronic Structure

Das

Preiß

Plentz

et al. 2018

Advanced Energy Materials

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It is demonstrated that systematic and designated control of supramolecular nanostructures via interfacial engineering enables (opto)electronic C60‐material properties to be widely adjusted. Interestingly, the lowest unoccupied molecular orbital (LUMO) energies of the same amphiphilic fullerene species are tuned up to 120 meV using supramolecular assembly, competitive to complete molecular change; cf. PC61BM to PC71BM causes a change of 200 meV. Morphology control is achieved through different thin‐film production techniques involving molecular assembly at interfaces, including liquid–liquid interfacial precipitation (LLIP), and Langmuir–Blodgett technique at air–water interface. LLIP enables supramolecularly ordered extended surfaces, yielding the least electronically stable LUMO (ELUMO = −4.28 eV). After qualitatively explaining the observed electrochemical LUMO energy variation for these assemblies with varied molecular packing and aggregate dimensions, an analytical equation is proposed, connecting morphological parameters with LUMO energies with prospects in supramolecular chemistry. To demonstrate the applicability of supramolecular structure–electronic property relations and of supramolecular structure fabrication protocols established in this work to tailor device properties, amorphous‐Si/fullerene hybrid solar cells are built and characterized. It is found that the supramolecular structure variation can be successfully translated to the solar cells, giving rise to a prototype linear relation between LUMO energy and open‐circuit voltage.

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PEDOT:PSS emitters on multicrystalline silicon thin-film absorbers for hybrid solar cells

Cited by 27 publications

References 20 publications

Multicrystalline Silicon Thin‐Film Solar Cells Based on Vanadium Oxide Heterojunction and Laser‐Doped Contacts

Multicrystalline Silicon Thin‐Film Solar Cells Based on Vanadium Oxide Heterojunction and Laser‐Doped Contacts

Hybrid solar cells based on Si and PEDOT : PSS

Controlling Intermolecular Interactions at Interfaces: Case of Supramolecular Tuning of Fullerene's Electronic Structure

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